Reptile & Amphibian News Blog
Keep up with news and features of interest to the reptile and amphibian community on the kingsnake.com blog. We cover breaking stories from the mainstream and scientific media, user-submitted photos and videos, and feature articles and photos by Jeff Barringer, Richard Bartlett, and other herpetologists and herpetoculturists.
Monday, August 22 2022
![](/blog/uploads/knobtail_a.jpg) This is N. asper, recognized by name rather than appearance
Australia! A veritable land of geckos! But from among this plethora of hobbyist favorites, one group, those of the genus Nephrurus, stands out, or at least once stood out, by the presence of knobs tipping the shortened and/or fattened tails. But now, with its inclusion to the genus by Aaron Bauer, the old Underwoodisaurus millii, a species with a comparatively fat but long tail that bears no visible tipping knob, has become a member of the knobbed cluster. It is N. millii. All are capable of vocalizations.
But this blog post is about only 2 members of the genus whose tails differ from the rest but that are themselves of confusingly similar appearance. These two, the Queensland Rough Knob-tail, Nephrurus asper and the Centralian Rough Knob-tail, N. amyae have, by far, the shortest tails in the genus. The former inhabits much of Queensland, from the Cape York Peninsula southward and the latter ranges over much of central Australia including Northern Territory and extreme eastern Western Australia. Both are associated with ledges, rocks, and arid soils.but in eastern Queensland N. asper may be found to range into areas a little moister than the norm. There it seems associated with creviced, rocky, ledges.
These 2 species are so similar that unless their geographic range is known you will have difficulty determining which is which. The species name asper relates to the rough-skin of these geckos, while amyae is a patronym. Although both are “sand” colored, of the 2, N. amyae, beings associated with red sand areas in Australia, is often the redder while N. asper tends to vary from sand tan to pale brown. Both have faint darker crossbands with the nuchal (neck) band being the most prominent. Dorsally and laterally these two geckos have spiny scales encircled by somewhat enlarged smoother scales.
Both species are hardy captives, feeding well on insects and pill-bugs. They will drink water droplets from the sides of the terrarium or from their own scales when gently sprayed. They may not recognize a shallow dish as a water source. Both species are adult at a svl of 4 ½ to just over 5 inches with the Centralian being slightly the larger and the very short tail adding a few fractions of an inch. They are, like many geckos, terrestrial, lack expanded digital laminae, fully capable of burrowing in suitable soils, and are oviparous.
Continue reading "Knob-tailed Geckos"
Monday, August 15 2022
![](/blog/uploads/CubaD.jpg) Peltophryne fustiger is the Giant Toad species from the region of Soroa, Cuba
Our first herping experience was at Soroa, a locale southwest of Habana, known for its waterfalls and streams. The region is home to a big aquatic anole and other lizards, a variety of snakes, and an endemic giant toad, Peltophryne fustiger.
Our second morning proved to be fruitful. Within minutes we were all gazing at several Stream Anoles, Anolis vermiculatus,. There were juveniles on fallen branches in the stream and adult males displaying on nearby treetrunks. Having been told that the species was difficult to find and photograph, we found our experience to be totally opposite.We learned also, that while most accounts claim this and the related A. bartschi to be the only 2 amongst the hordes of anole species to be devoid of a dewlap, that this was not precisely the case. In fact, both of those taxa have a dewlap, small though it is.
Continue reading "Why Cuba? Part 2"
Monday, August 8 2022
![](/blog/uploads/CubaA.JPG) An adult Cuban Crocodile. This species is not inclined to have a gentle disposition.
This Island Nation (archipelago) has always intrigued me. ‘Way back in the 1950s I had contemplated a visit to Cuba, but politics prevented a visit. And although politics still play an important role in a visit to Cuba, it is now at least possible. These reminiscences are about Patti’s and my trip number 3, from Havana westward to Soroa and Vinales and then southward to the Cienega Zapata, the home of the fabled Cuban Crocodile.
Cuba’s herpetofauna (and endemic birds) are very different from species found only 90 miles northward on the Florida peninsula and keys. Amongst the herpetofauna, for example, there are no seriously venomous species, although several snake taxa are rear-fanged and produce a venom of “mild” toxicity that assists in overpowering prey. Among the constrictors are the big Cuban Boa and a number of “Tropes” that were until recently considered dwarfed members of the boid family. Simply put, if you exclude the Cuban species of anoles and a treefrog now established in Florida, no matter where we stopped to search, any herps found would be distinctly different from those found only 90 miles distant in the Florida Keys. Now onto the air conditioned tour bus, and driver, Ronel, had us on our way in mere minutes.
Continue reading "Why Cuba?"
Monday, August 1 2022
Note the slightly upturned nose of this species.
Hypsirhyncus ferox, the Hispaniolan Cat-eyed or Hog-nosed Snake, is an interesting little dipsadine species about which very little is written. Both common names are well deserved, this snake having elliptical pupils and a flattened slightly upturned rostrum.
Coloration may range by individual from a solid brick red, through various shades of yellow, to a deep olive-gray, all with or without dorsal patterning.
Long a single species found in both Hispaniolan countries and having 3 subspecies, recently it has been revisited by geneticists and (surprise, surprise!) has now been split into 2 species, one of which has 2 ssp. Adult size is about 15 inches and prey includes lizards and frogs. Seemingly related to the small dipsadine racers of the Caribbean Islands, the Cat-eyed Snakes can move agilely and quickly. Over the years I have maintained a few as captive and found them to be secretive and hardy, readily feeding on anoles. Other than the fact that this is an oviparous snake, little is known about its breeding methodology.
Continue reading "Hispaniolan Cat-eyed or Hog-nosed Snake"
Monday, July 11 2022
![](/blog/uploads/kochi1.jpg) Koch's Day Gecko is one of the plainer colored green taxa, but also one of the largest.
Having decided to write a bit about a couple of day gecko species, I just (08Feb22) looked at the day gecko (Phelsuma sp.) listings on my host’s, Kingsnake.coms, page to see what species were available today. I was shocked to see only a single listing, this for 2 Koch’s Day Geckos. P. madagascariensis kochii. This was so very different than during the heyday of Malagasy importations, the 1980s, that I could hardly believe my eyes.
Admittedly, I am no longer keeping up with the vagaries of herp availability like I did in the 1970s and 1980s, but the almost absolute lack of ads for these wonderful and easily bred lizards actually shocked me. I well remember the arrival of Malagasy shipments at Gulf Coast Herps (sadly, now closed), and Rob MacInnis and Bill Love scurrying about in their Ft. Myers facility to ascertain all were unpacked and suitably housed as quickly as possible.
I posted a few pix and queries on my Facebook page today (08Feb) and a few responses have come in. It seems that a few of the more common or larger species are being maintained both as pets and breeders. I can only hope that a few hobbyists (there now seems a larger number than I initially thought!) continue to maintain other taxa. Replenishment from the wild seems unlikely, so whether or not these beauties remain available to hobbyists is quite likely now up to the hobbyists themselves.
Continue reading "Where have all the Day Geckos gone?"
Monday, July 4 2022
![](/blog/uploads/Schlegelii1.jpg) Eyelashed Pit Vipers come in almost all shades of green and yellow plus gray and brown.
We had just met with a little blunt-headed tree snake on a trailside shrub. It looked so like the twigs on which it quietly lay that we had walked by and then, for some reason decided to retrace our few steps back to the creek. Only then, because it had decided to lift its head a bit, did we see the tree snake. Aha. I mantodes inornata. A new species.
Again, we scanned the creek, then moved ahead on the trail only to be stopped in a few steps by the creek itself that had there decided to widen, deepen, and cross the trail. What had earlier looked to be a yard wide and a foot deep had been deepened and widened here by innumerable footsteps on the pathway. We were either going to get wet or turn back, so of course we got wet.
And it was a good thing we had done so, for as we sloshed along our guide quietly said “Oropel.”
I said "Oh WOW!"
I had kept an example of the Eyelashed Viper, Bothriechis schlegelii, many years before. That snake had been rather dark and overall nondescript. But it had been a gift and I was still a kid, so I cherished it. Then, I was fortunate over the years to have seen many others, at dealers, at breeders, and at zoos, but now I was looking at my first “in field” example. This was an experience different and more exciting than the others and a beautiful example this oropel, the yellow phase, was. And before the walk was over we were to see a second, a greenish one that time.
A memorable stroll!
Continue reading "Meet the variable Eyelashed Pit Viper"
Monday, June 27 2022
![](/blog/uploads/Bush6.jpg) Small snakes, variable bush vipers are adult at from 18 to 24 inches in length.
Meet Africa’s non-eyelashed, muilticolored viperine answer to the crotaline Eyelashed Pit Viper of Central and South America! This is the variable bush viper, Atheris squamiger. An arboreal species, this 18 to 24 inch long viperine is most at home in forest shrubs rather than canopy reaching trees.
Although in some populations the color of the variable bush viper may be a rather standardized olive-green, in other locales the variations in coloration are nothing short of remarkable. In these latter the little snakes may be of some shade of green, orange, russet, cinnamon, blue, yellow, charcoal, or brownish. Some may even be of one color dorsally and a second color laterally. And on any of these colors the snake may or may not bear a vague or prominent dorsal pattern of dark-edged, darker than ground color, dorsal saddles or chevrons. The belly may vary from immaculate to heavily spotted. Have I yet described a variability sufficient to warrant the name? I would certainly think so.
Atheris squamiger occurs in tropical West and Central Africa
This snake will bite if threatened and envenomation has resulted in human death.
Continue reading "The Variable Bush Viper"
Monday, June 20 2022
![](/blog/uploads/cmap3.jpg) Mussels and crayfish beware. You are being searched for.
Rapids, calm, more rapids then more calm. Kelly and I were on the 7-Point River, now searching for, among other things, common map turtles, Graptemys geographica. Still an hour or so before dusk, robins were already chirruping their evening songs and red bats were flitting in quest of insects just a few feet above the water.
Thanx to Kelly and another AR GFC biologist, both of whom dove deeply to check on Ozark hellbenders, Cryptobranchus bishopi, I had already had an opportunity to see and photo one of these huge salamanders. Throughout that float we had been watched by raccoon, a mink, and taunted by common map turtles that rose from the depths almost, but not quite, in reach from the boat.
But now we had a longer net that I hoped would increase our chance of getting up close and personal with one of these chelonians. It didn’t. They continued to surface but as if divining our intent, all were now even more distant. Well, darn.
While not the largest of the genus, the common map turtle is big. Females attain a 10” carapace length and males are between 4 and 6” in shell length. Females, mollusk and crustacean eaters, develop the enlarged head associated with such a diet. IOW, they are an impressive turtle. And I had just about decided I was going to have to leave with no photo.
But Lady Luck was with us. Just as we beached a big female map turtle came trudging down the sandy bank. Probably returning to the river from a nesting, pix were taken, and we, turtle and humans, went merrily on our individual ways.
Thanx again, Kelly. Yours is a beautiful region.
Continue reading "The Common Map Turtle"
Monday, June 13 2022
![](/blog/uploads/egyption3.jpg) A pair of diminutive Egyptian tortoises, Testudo kleinmanni.
OK, Chris, what are those?
I had ventured over to harass Chris and Mike while they unpacked a shipment of Egyptian imports. I recognized most of the herps, but the critters before now, little tortoises, were something new. They looked a bit like Hermann’s tortoises, but were much smaller, a little more elongate, and these ostensibly came from Egypt and Hermann’s didn’t, so????
And that was my introduction to the little “Egyptian” tortoise, Testudo kleinmanni. It was apparently rare back then and is now even more so. And sadly, as I later learned, those in that first shipment didn’t fare very well.
There seem to be very few of this tortoise species in America but a few are bred in zoos and by private hobbyists each year.
The highly domed carapace varies in color from a variable off-white, through buff, to brown. Reflecting more heat than darker colors, this allows the little tortoise to remain in the open and forage longer. The carapacial scutes often have dark edges or dark anterior blotches. The plastron is off white to buff and carapace is light yellow, often with two dark triangles on each of the two abdominal scutes. The head, neck, and legs are pale. These colors blend well with the light background colors of their desert home. Adult size is about 4”.
This is a chelonian species that I have never worked with. I have been told that although shy, the species does well and breeds readily once acclimated. I’m glad I had an opportunity to meet them so many years ago and hope to see more captive bred examples in the future.
Continue reading "The Egyptian Tortoise"
Monday, June 6 2022
![](/blog/uploads/brucei1.jpg) An adult female Patch-nosed Salamander
By Dick and Patti Bartlett
In 2009 a new species of “miniplethodontid” salamander was described. Although looking much like the brook salamanders of the genus Eurycea, research determined that this pretty little miniature was sufficiently different from the brook salamanders to warrant the erection of a new genus— Urspelerpes. This genus contains only the single species, U. brucei. Because of the nose-spot this salamander was given the common name of Patch-nosed Salamander.
It is an uncommon denizen of the leaf-strewn montane streams and stream edges of northern GA and adjacent SC.
As mentioned the yellowish patch on the nose tip is characteristic. Including tail, adults are about 1 7/8th inches long. Unlike the Brook Salamanders on which males and females are similarly colored, the males and females of Urspelerpes differ in color. Females tend to be patternless while males are strongly patterned with a pair of dorsolateral stripes.
Continue reading "The Patch-nosed Salamander"
Monday, May 30 2022
![](/blog/uploads/giantsalamander2.jpg) Nose to nose with a California Giant Salamander.
California has it all. Well almost all. Except for what they don’t have. But if its caudatan diversity you’re interested in, California is definitely a state you should consider visiting. Newts, Lunged salamanders and Lungless salamanders all may be found there. Some are colorful, some are drab. Some are tiny, some are comparatively large. All are interesting.
One of the groups that I find of great interest are the Giant Salamanders of the genus Dicamptodon (family Dicamptodontidae). Of the 4 species 2 dwell in California’s cool, moist forestlands. These are The California and the Pacific Giant Salamanders, D. ensatus and D. tenebrosus, respectively. Both are hefty, and both top out at just about a foot in length, with tenebrosus perhaps being a bit more slender, a tiny bit shorter, having a proportionately smaller head and shorter limbs. This latter is also a bit darker in color. The former, the California Giant, is the southernmore of the 2, ranging southward in the Coast Range from southern Mendocino County to western Glenn County. The Pacific Giant ranges northward from Glenn County to southwest British Columbia, Canada.
Populations of both of these big nocturnal salamanders are adversely affected by foresting practices that leave stream banks unprotected, subject to drying, and the streams themselves subject to warming. Although both of these salamanders are variably colored, neither is brightly colored. Ground color of both is tan to light brown with well-defined reticulations and spots of reddish brown to dark brown. They breed in streams and creeks and the aquatic larvae may take several years to metamorphose.
Prey includes invertebrates such as worms and slugs as well as vertebrate prey such as smaller salamanders.
Continue reading "Meet the California Giant Salamander"
Monday, May 23 2022
![](/blog/uploads/pink1.jpg) This coachwhip caused a scream, a screeching stop, and a marathon run. But it was worth it.At scream volume “ ---S T O P!!!!!!!!!! ---.“ Yep, Jake had managed to scare me again. I was in the passing lane doing about 65, about halfway past a slower car, when Jake yelled. Fortunately there was no one following tightly so I slammed on the brakes and before I stopped Jake was out of the car running east while we were heading west. I parked on the verge, clambered out and back about 50 yards Jake was stationed in the grass trying to decide what the snake he had seen and I had missed on the side of the road was going to do.
Hurry screamed Jake. Hmppphhh. Not likely. My days of hurrying are long gone. But I WAS closer now. Go out on the road and try to prevent it from crossing. It’s a coachwhip—a PINK coachwhip!
Now I understood. We had seen but failed to catch or even photo pink coachwhips on our last 3 trips to or through Texas. Suddenly I felt Jake’s excitement. I do love racers and racer relatives.
So I limped out in the road and rather than watching me the big snake was now watching me. Then it turned it’s head towards Jake and started to move. In an instant Jake was airborne.In anotjhert instant he was flat on his belly in the grass and sandspurs. And in a 3rd instant he was screaming OWWWWWCH! GET IT! Certainly no problem now because he alresdyu had the snake at midbody and the snake had him by the eyebrow. Interesting dilemma. I wondered which would win?
But heck I wanted to photo the snake as badly as Jake did, so I grabbed it before it decided to swallow Jake and the snake immediately transferred its attention to my arm. Oh well. It was worth it.
Right Jake?
And I guess it might have been because another 5 miles down the road we had a similar but a bit less bitey encounter with a second pink coachwhip.
I was so impressed with these snakes that I did something that I haven’t done in a long while. I decided that if Jake didn’t wish to retain the snake I would like to keep them. Jake didn’t, I did.
But here’s what I didn’t expect. Once home and caged these 2 adult coachwhips proved dog tame. The first time I fed them both slowly left the hidebox, came to cage top, and gently took each thawed mouse from my fingers. No biting, no striking. And both have continued to do so on each feeding attempt. Now I’m excitedly awaiting their next shed. They should be knockouts.
Continue reading "Pink Coachwhips"
Monday, May 16 2022
![](/blog/uploads/bandedgecko1.jpg) Banded Geckos look a lot more delicate than they actually are. This is a San Diego Banded Gecko.
Counting species and subspecies there are 7 forms of banded geckos, genus Coleonyx, in the American West. Two of these, the Barefoot, C. switaki, and the Reticulated C. reticulatus, are larger than the remaining 5 and have very limited ranges. One, the Texas, C. brevis, is the easternmost and is smaller than any of the others. It is the remaining 4, all subspecies of the wide ranging Western Banded Gecko, C. variegatus, that we shall mention here. All have elliptical pupils and are nocturnal. The body is slender and between 2 and 3 inches long. The original tail (the tail is easily autotomized and often in some stage of regeneration) is about the same length as the snout-to-vent. Original tails are prominently banded.
The 4 subspecies of the Western Banded Gecko that occur in the USA are the San Diego, C. v. abbotti, the Tucson, C. v. bogerti, the Utah, C.v. utahensis, and the Desert, C. v. variegatus. Appearance differences are slight and it is best if you are interested in a particular form that you check a field guide for ranges.
Generally speaking though, the San Diego subspecies occurs on the Pacific slopes of southern CA. The Tucson form may be encountered in seAZ and swNM, the Utah race is restricted to swUT and immediately adjacent NV and AZ, and the Desert, by far the most wide-ranging of the 4, is found over much of AZ, NV and eastern CA.
Although these little geckos may be found beneath surface debris such as wood, cardboard, and rock by day, I’ve always found it a lot more fun to road hunt them at night. They are active, their light color contrasts well with dark pavement, and they cross roads in a series of darting rushes, often with their tail curled up over their back, this initially giving them the appearance of a large scorpion. Keep this similarity in mind as you jam your car into park, slam open the door, and rush out to slap a cupped hand of the little creature on the road. It’s not pleasant to be painfully surprised!
Continue reading "Some Banded Geckos of the American West"
Monday, May 2 2022
![](/blog/uploads/Terrapene_carolina_carolina_24.jpg) The most variable and arguably the prettiest of the three, this is a male Eastern Box Turtle.
The USA is fortunate in being home to 6 rather distinct box turtles, 2 in the Terrapene ornata group, and 4 in the T. carolina group. The latter 4 are the Eastern, Terrapene c. carolina, the Gulf Coast, T. c. major, the Three-toed, T. c. triunguis, and the Florida, T. c. bauri. Since we chatted about the Florida Box turtle just last month, we’ll exempt it from this blog. That leaves us with the 3 subspecies that are most similar in appearance, even if the most diverse in coloration, with the Eastern race being especially so.. These three have carapaces that are high-domed, may be flattened dorsally, and except for the slightly more elongate Gulf Coast subspecies, are rather round when viewed from above. Collectively they range from southern Maine, south to southern Georgia then westward to eastern Kansas and east Texas. Hatchlings are flatter and lack the hinged plastron for which this genus is famous.
From west to east we come first to the Three-toed subspecies. It is also the most uniformly colored of the three, its carapace usually being of some shade of brown to olive brown, with or without lighter dots and dashes. The face is variably adorned with orange and white, sometimes extensively so.
In southeastern AL the Three-toed Box Turtle intergrades with the largest of the subspecies, the Gulf Coast Box Turtle. In its purist form (Mobile Bay and the Florida Panhandle), this latter subspecies is big (to 8 ½”), often has a rather flat-topped carapace, and when adult is quite dark—blackish brown-- in color. Old males may develop white patches on the face. Younger examples and intergrades are often light brownish-red.
Finally, we come to the most variable in overall appearance, the Eastern Box Turtle. It may be found east of the Mississippi River and north of Florida to the East Coast. Carapace, legs, and head are brown, but the markings on all, varying from few to profuse, may be yellow to bright orange. The latter produces a truly beautiful little chelonian.
Continue reading "The USA Carolina Box Turtle Group"
Monday, April 25 2022
This is a female Kaznakov's Viper.
When Louis Porras told me he had a pair of Kaznakov’s Vipers for sale, I jumped at the opportunity to acquire them. For years this small, heavy bodied viper, Vipera kaznakovii, had been a dream species. But now the dream was to become a reality.
A woodland viper of the Caucasus (Turkey, Georgia and southwestern Russia), it had been seldom imported. In its homeland it is reportedly found near rocky upthrusts and associated scree deposits in rather open hardwood forestland.
The pair received, a black male and a black and orange female, were exactly what I had hoped them to be. At about 20 inches in length, the female was a bit larger than the male. They proved hardy, both feeding readily and steadily on small, thawed, mice.
During their second winter with me I cooled them noticeably but did not hibernate them. Meals then consisted of smaller mice and feedings were further apart. In early winter I noticed breeding behavior and by early April the female was obviously gravid.
All of the above comments are from a memory flawed by time. The computerized records disappeared when the harddrive of the computer I was then using burped and then whirled itself into nonrepairable deterioration. The truth is that computers and I are not in the least compatible.
But at least I have photos of these beautiful vipers and their progeny to share with you. Thanks, Jeff, for the opportunity.
Continue reading "Kaznakov’s Viper"
Monday, April 18 2022
The Eastern Spadefoot, Scaphiopus holbrookii, is not a big anuran. It is adult at a length of about 2 inches, sometimes a bit smaller, sometimes a bit bigger. But for its size it does have a pretty-big voice. I’ve heard the vocalization likened to a burp. And at times it sounds like that to me. But I had to rethink the sounds of the spadefoot chorus being voiced in our flooded yard last July. Those calls reminded me more of abrupt purrs than of burps. But the calls apparently sounded just right to the females, for even before full darkness had fallen on that rainy day most males were amplexing visiting females. Even before morning light only the water and the eggs remained.
Our backyard used to be a railbed. Over the rails ran the local Gainesville to Gulf trains, a company now as extinct as the dodo. But the sunken bed, now devoid of rails, ties, and most spikes, remains, and at the lower end temporary flooding is common. We leave it as it is because the treefrogs, narrowmouths, and spadefoots breed there annually. These used to be called Eastern Spadefoot Toads, but today just Eastern Spadefoot will do. They are actually in an entirely different family than the toads. Eastern Spadefoots have almost smooth skin and tend to be a brownish color with a lyre shaped lighter dorsal marking. They have only a single digging spur (but they are very efficient and dedicated burrowers), lack or have very small parotoid glands, and have vertical pupils.
Now we’ll scoot ahead about 14 days. Some of the water had soaked in, but enough was left to allow several hundred tadpoles to grow and metamorphose into tiny spadefootlets. Our yard was temporarily untreadable as the hundreds of wee ones sought refuge well away from the railbed. To walk was to crush, so we kept to the front yard for a few days. But the inconvenience was well worthwhile, for now on humid summer and autumn nights the spadefoots, a burrowing species, emerge and seek repast. This is a cycle we and our neighbors enjoy.
An Eastern Spadefoots dorsal marking is in the shape of an hourglass.
Continue reading "The Eastern Spadefoot Toad"
Monday, April 11 2022
![](/blog/uploads/godmani1.jpg) The colors of last years fallen leaves, the little Godman's Pit Viper well camouflaged on the forest floor.
The little Godman's Pit Viper, Cerrophidion godmani, was once readily available and rather inexpensive. Today it seems another of the species that has largely disappeared from the trade. It ranges through the southeastern Mexican mountains to the highlands of Guatemala. Those south of Guatemala are now known as C. sasai. This latter also being a highland species.
In appearance this little pit viper varies in color between the browns of newly fallen leaves to that of darker colored, older, wet leaves. Black outlined darker dorsal blotches (these may actually form a broad zigzag stripe dorsally) and lateral spots are present. There is a diagonal white stripe from the eye to the angle of the mouth. Below the stripe the facial scales, including the upper labials are often a variable russet in color.
Adult size is usually 18 to 24 inches, but some examples have been 30+ inches.
Although of subdued colors, I’m glad that I had opportunity to photograph a snake that might now be only a memory in American herpetoculture.
Continue reading "The Godman's Pit Viper"
Monday, April 4 2022
![](/blog/uploads/FloridaBoas1.jpg) A beautiful subadult Boa Constrictor from the Miami population.
Yes, as with the pythons there are 3, but again only one is established. The established species is the Boa, or if you prefer, the Boa Constrictor. The population, in Miami, has been known for about 70 years but in no way can its presence be considered a threatening invasion by any but the most rabid conservationist. In its 70+ years, the population of these live-bearing snakes seems to have grown little if at all. BTW, the scientific name of this snake echos the common name, Boa constrictor, often with a subspecies tacked on. The range of the various subspecies of boas extends from northern Mexico to Argentina. Boas from the more northerly locales are smaller than those from the neotropics. In their homelands, depending on locale, most boas are adult at 5 to 9 feet in length but in the neotropics 12 footers have been recorded. The Boas in Miami are a mixture of 2, or possibly 3, neotropical subspecies. I am unaware of the maximum size of the Miami Boas but have seen several in the 4 to 6 foot range and an 8 foot long female was caught in early February. Like the pythons, boas can and will climb. The ground color is a yellowish to fawn with dark saddles. As it nears the tail the ground color becomes red and on the tail may be quite a bright red. It is, of course, from this that the name of Red-tailed Boa has been coined.
The other 2 boids of concern are both “Water boas,” Anacondas, the Yellow, Eunectes notaeus, and the Green, E. murinus. These 2 boa relatives turn up just often enough (primarily on the southern 2/3rds of peninsular FL) to make their status questionable. Like the Boa these bear living young that are well able to fend for themselves at birth. Adults are immense snakes that display notable sexual dimorphism with males being much the smaller gender. They are very much at home in aquatic situations and often seek prey near the shore. They are surprisingly agile when on land. Be smart and beware of large individuals, no matter where encountered.
Even at the best of times, Anacondas tend to be short-tempered. If you do see one, use care and common sense when approaching.
Male Yellow Anacondas are 5 to 8 feet. Females attain 11-13 feet. Neonates are about 20 inches in length. Green Anacondas are far larger and heavier than the Yellows. Male Greens are often 5 to 9 feet, while adult females attain 15 to 20 feet…and it’s all muscle! Neonates are 20-24 inches in length.
Florida. The land of the invasives!
Continue reading "Florida’s Three Boas"
Monday, March 28 2022
![](/blog/uploads/FloridaIguana1.jpg) This is an adult male Mexican Spiny-tailed Iguana from the Miami population.Yes, it does seem that unwanted critters come in threes to Florida—three boa species, 3 python species, and 3 iguana species.
When mentioned at all, the subject of iguanas in Florida usually refers to the omnipresent Green Iguanas of the southern peninsula and the Keys. This is understandable for these are the most easily seen as they display in the trees, on abutments, on canal banks, and just about everywhere else. But besides this attention grabber, there are 2 other species that are actually present. These are both Spiny-tailed Iguanas, ground dwellers, very efficient burrowers, speedsters, climbers if necessary, and of very similar appearance. Both species are predominantly herbivorous but will accept animal matter if hungry.
In name they are the Mexican Spiny-tailed Iguana, Ctenosaura pectinata, and the Black Spiny-tailed Iguana, C. similis. Despite the reference to color, C. similis is very similar to C. pectinata. Both are big gray lizards with darker crossbands. Both are capable of considerable color changes, being lightest overall when warm and content, and assuming darker colors when being combative or cold. The actual difference can only be ascertained by the presence or absence of small scales between the dorsal spines and spiny tail whorls. Hatchlings are green, lack a dorsal crest, but caudal spines differentiate them from the green iguana.The presence of both is, like their green relative, the result of escapees or releasees.
If you see a big (4 feet long) gray lizard basking atop a wall or rock in southern FL, you are probably viewing a spiny-tailed iguana. Say “Howdy” for me.
Continue reading "Spiny-tailed Iguanas in Florida"
Monday, March 21 2022
![](/blog/uploads/FloridaBox1.jpg) Adult male Florida Box Turtle
Of the 4 subspecies of Eastern Box Turtle, the Eastern, the Gulf Coast, the Three-toed, and the Florida, it is the latter that differs most in appearance from the other 3. While its relatives tend to have carapaces that are flattened dorsally and to be rather round when viewed from above, the Florida subspecies, Terrapene carolina bauri, is rather elongate and highly domed. Additionally, the carapace is usually black with precise elongate yellow rays radiating downward on each dorsal plate and a complete or interrupted yellow vertebral line. The head is black dorsally and olive in the temporal areas. Hatchlings are less precisely marked than the adults, but do usually have a complete vertebral stripe of yellow. Hatchlings are about an inch in length; adults may attain 6 inches. Like other box turtles, this beauty is omnivorous when adult but primarily carnivorous when a hatchling. Earthworms, insects, and arthropods are all eagerly consumed.
This pretty, terrestrial turtle with the hinged plastron was once common on peninsula Florida from the Georgia state line to the southern Keys. Today it seems a bit more difficult to find. Although not entirely protected, it cannot be commercialized in the state and a limit of 2 in your possession is strictly enforced.
Continue reading "Florida Box Turtles"
Monday, March 14 2022
![](/blog/uploads/spring2022_1.jpg) No matter what the nomenclatural whiz-kids choose to call it, a Yellow Rat Snake is still a Yellow Rat Snake.As I write this in early February, I’m basing my comments on memories of old, of those time when I was roaming the hills and dales of Massachusetts’ Connecticut Valley, of times back when I could flip a flagstone in the yard and come face-to-face with an Eastern Worm Snake, Carphophis a. amoenus (when was the last time you saw one of these?), when Timber Rattlesnakes, C. h. horridus, were a northern subspecies and Canebrake Rattlers were the southern subspecies, C. h. atricaudatus, when Black Rat Snakes were Black Ratsnakes, back then Elaphe o. obsoleta, when Fowler’s Toads were a subspecies of B. woodhousei, the former being B. w. fowleri, and…well you get it. Back when field biology was a recognized study subject, when genetics were seldom spoken of, before those who have used genetic studies to cause nomenclatural turmoil, in most cases for the “publish or perish” concept, or simply because they could make change, and not because change was needed.
Annoying though these name changes may be, the recipients, the snakes in this case, really don’t care what they are called, and we, those of us who are interested in nomenclature, are under no mandate to use the newly suggested names. In other words, a Canebrake Rattlesnake can still be a Canebrake instead of a Timber, and a Yellow Rat Snake does not have to become an Eastern Rat Snake. Your choice.
Continue reading "Spring, Herps, and Names"
Monday, March 7 2022
Tropes, formerly called Dwarf Boas, are high on the lists of herps we hope to see. This is Tropidophis melanurus.
The beautiful Island Nation of Cuba. A mere 90 miles away, yet Cuba, with a climate about identical to our southern Florida Keys, but with a wonderfully different herpetofauna and avifauna, remains an “unknown” to many, if not most, Americans. But Patti and I are two of the lucky ones. We have each been to our neighboring island several times. And it is probable that as you read this, Patti and I, and a few other participants, are again in the air on an airliner, heading southeastward from Tampa.
But let me explain.
The previous times we’ve visited Cuba have been on birding trips. Despite this designation, we were able to get a bit of herping in. But this time, we’re have broadened our view a bit and designated our quests as both herping and birding. And if this trip goes well, we may attempt a later trip specifically for herping (but we’ll also look for birds) to a different destination. Just a thought at the moment, but the far western peninsula, Guanacahabibes, seems to be calling strongly to us. We’ll keep you posted both about our current and future trips.
Continue reading "Cuba, Here We Come"
Monday, February 28 2022
![](/blog/uploads/FloridaScrubLizard1.jpg) Florida Scrub Lizards, male foreground, female rear.
The state of Florida has a fair number of endemic herp species. There are Florida sand skinks, Crowned snakes of not one but of 2 species, Florida worm lizard (that, with an example having been found in south Georgia just became non-endemic) and several others. But one that we don’t hear much about is the Florida Scrub Lizard, Sceloporus woodi. Once fairly common in 4 well defined but well separated locales, this little member of the spiny lizard (also known as “swifts”) clan now seems reduced in numbers and may even have been extirpated in some regions.
Having a body length of less than 3 inches (the tail will add another couple of inches), the Scrub Lizard is one of the smaller members of the genus. The Scrub Lizard’s dark lateral stripe makes differentiating it from the Fence Lizard, Sceloporus undulatus, that lacks the stripe, a simple task. This Scrub Lizard, agile and alert, is sexually dimorphic. Adult males lack most dorsal markings between the dark lateral stripes while females have rather prominent dark, wavy, dorsal crossbands.
If startled while basking or foraging on the ground the Scrub Lizard usually darts for the nearest tree and puts a trunk or limb between it and the interloper. Small, alert, and fast—3 requisites for survival in what can be a hostile home range.
Continue reading "Florida’s Scrub Lizard"
Monday, February 21 2022
![](/blog/uploads/pickerel1.jpg)
The yellow groin differentiates the Pickerel Frog from the Leopard Frogs.Pickerel Frog or Leopard Frog? The shape of the dorsal spots will tell. Or perhaps they won’t. It would be convenient if the dark markings of the Pickerel Frog, Rana palustris, always complied with the description most often attributed to it—squared or rectangular dorsal spots--- but the sad truth is that this is not always so. However, another field marking, that of having a yellow groin and underleg coloring does seem to be a constant. And you can always hope that the frog at which you are looking does have squared dorsal and dorsolateral blotches. Many do.
The Pickerel Frog is rather unique amongst the eastern ranids in that it produces a decidedly noxious skin secretion. The secretion can cause many human tears if the eyes are rubbed before hand washing. The secretion also seems sufficiently repulsive to render the anuran an unsuitable prey item for many snake species.
Overall, this brown spotted 3 ½” long, tan frog is common throughout its divided range. The eastern population ranges westward and southward from eastern Quebec to the eastern shore of Lake Michigan, then southward to northwest Alabama and southeast South Carolina. The western population ranges westward and southward to Western Wisconsin, then to east Texas and South Central Alabama, and Escambia County, FL. Between the two populations is a broad swath of what seems to be Pickerel Frog No Man’s Land.
The snoring call of this frog man be produced when the frog is fully exposed or when it is fully submerged. This frog may be encountered in moist meadows, near or in grassy puddles, bogs, and ponds, and may even enter caves. IOW it may occur wherever you would expect to find a frog and in some places that you might not expect one. They are not hard to find.
BTW, Lithobates is no longer the genus for the eastern ranids. They have been returned to Rana.
Continue reading "The Pickerel Frog"
Monday, February 14 2022
![](/blog/uploads/cornsnake22_1.jpg) Levy County FL Corn Snake
Whether you call them Corn Snakes or Red Rat Snakes, this lithe constrictor is a wonderful and welcome species of the North American herpetofauna. Long before the advent of the Ball Python fury (perhaps 25 years ago), it was the Corn Snake that was the target of snake-keeper’s genetic manipulation. I make no pretense of remembering what color or pattern expression came first, second, or third, but there were soon dozens of choices that went from cheap to far more than I, being kind of a cheapskate, would ever consider paying.
But this blog isn’t about those days or hobbyist derived phases and morphs. Rather it is just to show you that Mother Nature needs no help when evolving beauty. These are 3 rather distinct corn snakes from southern Florida. One, kind of “cinnamony” from Levy County, one precisely marked form from the Everglades, and one, the old time “rosy Rat snake” from one of Florida’s southern Keys. I hope you enjoy seeing these as much as I enjoyed finding them.
Continue reading "Corn Snakes"
Monday, February 7 2022
![](/blog/uploads/threestripemudturtle1.jpg) "Squeeze" today. After 10 months of rehab he is able to use his legs again and is growing.
This little denizen of marshes, swamps, water carrying ditches, lake and pond edges and occasionally of backyard goldfish ponds ranges northward from Florida’s Key West to southern and central Georgia and extreme southeastern South Carolina. Adult Three-striped Mud Turtles, Kinosternon bauri, are normally 3 to 4 inches long, but may rarely reach 5 inches. Hatchlings are, as I describe them, about 17/25ths the size of a shiny new quarter. In other words, hatchlings are tiny. In fact, so tiny are they, and so close in color to the earthen nest from which they emerge, that unless they are moving it is very easy to step on and kill or debilitate a hatchling.
And that’s exactly what happened to “Squeeze”, a hatchling that had been brought, on the verge of death, crushed, with cattywampus legs, dehydrated, and misshapen, to Florida Wildlife Care. Eventually “Squeeze” wound up with us, and we began a restoration project that I felt sure would fail. It didn’t. But the resurrection took a long time—several months in fact, and on a small scale is still ongoing. It was only 3 weeks ago (Dec 2021) that Squeeze finally began using his (we of course have no idea whether it’s male or female) right front leg. Today, rather than swimming in circles he goes in a straight line—slowly but straight. And he has begun eating ravenously and has grown. Oh, his name? Patti called him that because his life had been so nearly squeezed out of him. But we now have hope, and I’m pretty sure that Squeeze does too. C’mon Squeeze!
Continue reading "The Three-striped Mud Turtle"
Monday, January 31 2022
![](/blog/uploads/yellowfoottortoise1.jpg) After emerging from the forest this 6" long yellowfoot simply crossed the trail and disappeared on the other side.Patti and I were fortunate in being able to spend a good bit of time leading rainforest tours through various areas of the Peruvian rainforest. Depending on what our guests hoped to see we might have been following trails after dark in search of pit vipers, paddling kayaks in hope of seeing crocodile tegus, looking for green forest dragons in treefall areas, or simply meandering along forest pathways to see what we could see. All choices were wonderful, but I think I liked the daytime pathway walks the most. For it was on these we would occasionally meet one of my favorite herps, the Yellow-footed Tortoise, Chelonoidis denticulata.
In fact, it was only on these diurnal walks that we met these pretty chelonians. Sometimes they would be just sitting, legs mostly withdrawn, head and neck extended, soaking up the sunshine. At other times the tortoise might be strolling slowly along path edges nipping at whatever piece of forest vegetation that caught its eye. Sometimes they might only be bustling from one side of the trail to the other, leading us to the old why does a chicken cross the road query.
Despite being closely related to the red-footed tortoise, no variants have been designated for this species. Known to attain a straight measure of 28 inches, this tortoise is classed as the 5th largest land species.
Continue reading "Amazonian Yellow-footed Tortoises"
Monday, January 24 2022
![](/blog/uploads/redfoottortoise1.jpg) A cherry-head red-footed tortoise from Southeast Brazil.
As far back as I can remember (well, maybe not quite that far- LOL) Red-footed Tortoises, Chelonoidis carbonaria, have been available in the American pet trade. But although all have been readily identifiable as redfoots, not all have been exactly the same. The first I recall with any assurance of accuracy were imported from Colombia I don’t remember any “cherryheads” from this northern South American country, but when viewed from above all that I saw were reminiscent of a dumbbell—somewhat expanded at both ends but noticeably narrower in the middle. A few from Bolivia were brighter in color, seemingly larger than the Colombians when adult, had brighter facial pattern, but retained the dumbbell shape. Oh, the red on the legs was brighter too. And in fact some were what have become now known as cherryheads. But the “real” cherryheads came from Brazil. On this most redfoot enthusiasts seemed to agree. Then a few arrived from Paraguay and while some were a bit lacking in color, others were red-headed (and footed) knockouts. And now there are “Clown-faced” red foots from Venezuela. Oh, and occasional examples from various Caribbean Islands.
Genetic definitions: Not species, not subspecies, merely seen as slightly differing populations:
Northeastern variant: Head and legs light orange to red. Carapace black. Plastrons are mostly pale yellow. Range includes Venezuela, Guyana, Suriname, and northern Brazil.
Northwestern variant: They are similar to the above but their carapace varies from grey to brown. Their yellow plastron bears a dark central figure. They are found in southeast Panama and Colombia.
Northern variant: These are similar but smaller than the above. Range includes Colombia, Ecuador, and Peru.
Southern variant: can be identified by range, this being Paraguay, and northern Argentina.
Eastern variant: Plastron are mostly mottled with dark pigment. Heads and legs vary from yellow to the eagerly sought cherry-heads. Range includes east to southeastern Brazil.
Take your pick. The choice is often yours.
Continue reading "The Reign of the Redfoot"
Monday, January 17 2022
![](/blog/uploads/EvergladesRatSnakes2.jpg) The red tongue is 1 criterion for determining an Everglades Rat Snake
Since that day some 65+ years ago, when on a herping trip with Gordy Johnston from our homes in MA to the FL Everglades, I first saw a Everglades rat snake, then known as Elaphe obsoleta rossalleni, it has been my favorite USA species.
Since that first sighting several adverse things have happened to the comparatively small range of the snake: the despoiling of the glades being one, the removal of an exotic tree species (Australian pines) that had been accepted by the big orange snakes, the draining of the water table, the advent of sugarcane and sod farms, and the resulting genetic pollution of the Everglades rat snake by the yellow rat snake, being others. Today it is almost impossible to find a truly orange rat snake that shows all of the characteristics that define the Everglades subspecies, but occasionally you can still be lucky.
Continue reading "Everglades Rat Snakes"
Monday, January 3 2022
![](/blog/uploads/LeafFrog1.jpg) An adult Fringed Leaf Frog, Amazonian Peru.
The frogs were there. There was no question about their presence in my mind. To find them we would be dependent on Lady Luck and suitably rainy nights. Would this be the night?
It had looked stormy for most of the day, had clouded entirely by late afternoon, and had begun raining in the torrents so typical of the aptly named Amazonian (Peru) rainforest by early evening. In herper’s terms, it looked like it was going to be a great night for amphibs—especially the hylids--- that were so quiet between the storms that they seemed absent.
By the time it was fully dark, puddles had formed on the forest floor and frog-voices were echoing from treetops, tree hollows, puddles, and vegetated areas of the flooded oxbows.
Although I recognized many of the anuran calls, I was listening intently through the rain for a soft burping call, one with little carrying power.
But even if I couldn’t hear it, if I could by chance actually see the frog, I’d know it. The species? Cruziohyla craspedopus, the fringed leaf frog, a hylid that, unless breeding, was said by many to not voluntarily leave the high overhead leafy canopy (this thought may now have been contraindicated).
Adults of this leaf frog, moderately large and spectacularly pretty, are usually leaf-green dorsally. Metamorphs and juveniles are grayish. The continuity of the dorsal color is broken by irregular, pale, blue-grey lichenate blotches. The sides and inner surfaces of the legs are yellow with black vertical bars. The belly is yellow. The tarsi and outer toes are strongly and unevenly fringed. From this feature the common name is derived.
This remarkable frog descends to lower branches when breeding. Eggs are deposited in water holding concavities in fallen trees but may also be placed in ground-level puddles near a fallen tree.
Although we walked late into the night, startled by potoos and berated by owl monkeys, our goal frog eluded us. But the next day one of the hikers with us suddenly stopped as we were passing through a patch of broad-leafed vegetation, pointed, and asked “what kind of frog is this?”
And there flattened tightly, eyes closed, against a Heliconia leaf. was a beautiful adult fringed leaf frog.
All was well with the world.
Continue reading "A “Fanciful” and Fancied Treefrog"
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