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.
Tuesday, March 14 2017
![](/blog/uploads/Spalerosophisdiademaatriceps14mooldmale1.JPG) Not all royal diadem snakes are strongly patterned.
For reasons still unbeknownst to me, the snakes of the genus Spalerosophis have never become overly popular with hobbyists. Big, hefty, easy to care for, attractive. and relatively inexpensive — even though they are a bit on the feisty side and an opisthoglyph, it seems to me that at least one species, S. diadema atriceps, should have become a hobby wide favorite.
Let’s address the opisthoglyphid aspect first. Clinical toxinology assessments on this snake by the University of Adelaide conclude: “Bites by this species are not expected to cause medically significant effects and the only risk, probably small, is local secondary infection. Patients presenting with bites by these snakes do not require medical attention, other than to check for infection and ensure tetanus immune status. ”The report continues “Non-venomous, so essentially all bites should be “dry.”
In other words, despite its enlarged rear teeth and feisty attitude, this snake is considered nonvenomous.
Over the years the royal diadem snake (also known as the black headed diadem snake, or simply, diadem rat snake) has been bred by a few dedicated hobbyists. Hopefully there will continue to be enough interest in this species to assure that this big orange on orange snake doesn’t disappear from the hobby.
Continue reading "Royal Diadem Snake"
Monday, March 13 2017
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Mon, March 13 2017 at 15:01
![](/blog/uploads/cateye.jpg) Northern-Cat Eyed Snake Leptodeira septentrionalis
The southernmost region of the Lone Star State is a very interesting location. It harbors several unique species only found here, as this is their northernmost range from either Mexico or Central America. With its dry subtropical clime, most of the year is hot and winters are extremely mild. The vegetation (or what’s left of it), consists of some succulent plants that extend through the sandsheet, thornscrub forests and chaparral.
In over a decade that I’ve been conducting research here, I’ve noticed that for many species, winters aren’t cold enough and certainly not prolonged enough to result in any significant brumation period. A lack of brumation time, interestingly, may result is several species here reproducing year round or producing multiple clutches in a year (this is a neat discussion topic).
For example, one very attractive species found only in this part of the country is the Northern-Cat Eyed Snake ( Leptodeira septentrionalis). Relatively little is known about their natural history in this part of their range. We currently have ongoing projects with the species to learn more about their secretive lifestyle.
One observation I’ve made so far is that there are active neonates in December and January, and gravid females in September. This suggests the species is either double clutching or are fall breeders instead of spring breeders as the literature denotes (at least in this part of their range). Even without extended brumation periods, it seems in some parts of their distribution their populations remain stable, while in others they are facing environmental pressure due to habitat loss. I’ve noticed the peak of their activity is during temperatures in the mid 60s to mid 70s. They are rear-fanged and will feed on anurans, lizards, other snakes, and even mice. Finding neonates that late, (or early), in the year, poses more questions than answers for me. I guess we still have a lot more to learn about this enigmatic species.
Thursday, March 9 2017
![](/blog/uploads/Xantusiarriversiana2.jpg) Although a night lizard, this island taxon may be active diurnally.
We were traveling to Santa Barbara Island in California’s Channel Island group specifically to see the large, mostly diurnal, Island night lizard, Xantusia riversiana reticulata. A dichotomy? Diurnal night lizard? Indeed it seemed so and we hoped that this taxon was as diurnal as we had been told.
We were aboard a comfortable catamaran belonging to Island Packers in Ventura, CA. On the trip out we saw more common dolphins than we had known existed, a blue whale, and many pelagic birds. About 3 hours after we had left we arrived, to be greeted by elephant seals, California sea lions, and a US Fish and Wildlife Service agent, the latter who explained the dos and the don’ts associated with our visit. Then up a steep incline, hoping to avoid the depredations of the common ravens that are so adept at ferreting out stored foods and trinkets, and then ambling slowly up the footpath in search of the lizard that had drawn us...
The Island night lizard was the last of the 8 US species in the genus that we needed to photograph for our western turtles and lizards field guide. And once we were on its home real estate of the 8” long (that’s HUGE for a night lizard, by the way) lizard we quickly learned that the word “night” in its name really was a misnomer. We were to see and photograph the stocky, brown reticulated grayish, omnivorous, lizards, basking and foraging on and around many of the rocks along the trail. Some, their lidless eyes all watching for ravens, were even scrounging for crumbs beneath the picnic tables.
If you are ever out that way, check out the Channel Islands. It is an experience you will long remember.
Continue reading " Island Night Lizard"
Wednesday, March 8 2017
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Wed, March 8 2017 at 00:10
![](/blog/uploads/mayra3.jpg) This Western Diamondback's, Crotalus atrox, last meal was a Texas horned lizard, Phrynosoma cornutum
If you’re a herper that wants to make an everlasting contribution to science. What better way than by providing information that end users such as yourself or researchers can turn into valuable scientific data. Collecting either tissues or whole vouchers from DORs isn’t typically what the vast majority of herpers do. But we should! In doing so we are supplying immeasurable amounts of information that can be used for current research on snakes and amphibians, but also for a hundred years in the future! Through the use of vouchers, (preserved specimens curated in a collection), we can learn many things about species’ such as their anatomy and physiology, their diets, morphological variation and so much more.
Loving herps means doing all we can to aid in our understanding of their natural histories, their conservation, and population trends. With the advent of apps such as iNaturalist and HerpMapper (and others), we’re capable of recording digital (sounds, video, images) of sightings of live animals more than ever. This in turn illustrates that the range for many species or their numbers are much more expansive than previously thought. If you’re interested in citizen science start collecting DORs and submitting your digital vouchers.
But after you do, what’s next? In most cases you can call a local university and ask if they have a vertebrate collection. Once you find a museum, explain what you do and what you collect, in most cases curators will help you get vouchers to them. Some may even provide basic essentials, such as notebooks for data pertaining to the vouchers you’re providing. If a museum is not in your area, most will facilitate shipping to them. For tissue samples most curators would happily provide tubes.
So the next time you find a dead snake, a skull, snake skeleton etc. pick it up! The way I see it, we’re already out there, rather than letting those DORs become dry jerky on the road let’s make an everlasting impact and start publishing your findings so we all may learn!
Tuesday, March 7 2017
![](/blog/uploads/Plestiodoncallicephalus4.jpg) Mountain skinks are one of the most beautiful members of the genus.
At an adult length of 6 to 7 inches, the beautiful mountain skink, Plestiodon callicephalus, is a denizen of habitats that vary from rocky desert to wooded slopes. Those that I have seen have been along the rocky banks of seasonal creeks, and with just a little effort on the part of the searcher, the rocky banks of one spring-fed water trough could always be depended on to harbor at least one of these skinks.
This taxon has a light “Y” shaped marking on the top of the head, a fawn dorsum, and a broad dark stripe on each side. The stripe narrows posteriorly and fades entirely a few scale rows posterior to the hind limbs.
Like many skinks, the mountain species has a brilliant blue tail when young. Unlike many other skink species that lose the blue with growth and age, the mountain skink retains the blue throughout its life but the intensity dulls some with age.
Primarily a Mexican species, in the USA the mountain skink occurs only in extreme scAZ and the western bootheel of NM. From there it ranges southward to the vicinity of Guadalajara, MX.
Continue reading "Mountain Skink"
Monday, March 6 2017
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Mon, March 6 2017 at 00:08
![](/blog/uploads/mayra_1a.jpg) D.O.R. Bullsnake Pituophis catenifer sayiDriving down a dark county road seemingly in the middle of nowhere I stumbled upon a 7 ft Bullsnake ( Pituophis catenifer sayi) that was dead on the road (DOR). I was with my friend Bernd Skubowius at the time and we were both astonished at the size of the snake. It is unlikely the car that hit it didn’t see it, such a behemoth was visible from quite a distance. Nevertheless, because of the stigma associated with snakes people often don’t stop or go around them. On another occasion I found a gravid Gulf-Coast Ribbon snake ( Thamnophis proximus orarius) that was also a DOR, as per my usual I collected it along with several other ribbon snakes that night. I later learned, that one was of record size and the other had a record number of neonates! We published these findings to increase our knowledge of Gulf-Coast Ribbon Snakes.
Snakes fall victim to the crisscrossed death grid we call roads. Roads border every good habitat, every ranch, every preserve, roads are everywhere (but so are we).
With a growing human population and development of land there are several reasons why herps come on or near roads. For one, they have an ever increasing pressure to exit their refuge in the wild as this land is leveled and cleared for other types of development. The pressure results in wildlife emerging from these sites fleeing and seeking new patches of habitat to thrive on. Animals can continue emerging from these sites for months and months and many fall victim to mortality by the ever increasing vehicular activity. Additionally, there is a phenomenon we call the edge effect. In ecology the edge effect is particularly pronounced when the habitat is highly fragmented into ever decreasing patches. Edges and mid-disturbance levels result in higher biodiversity as it creates new microhabitats constantly. Unfortunately, the edge effect we see most as herpers is that one caused by new roads and development. Thus, we encounter a large number of DORs. It is becoming an increasing trend, at least in some areas, that road cruising results in more DORs than live snakes. It’s sad, but not all is lost!
(to be continued)
D.O.R. Texas Coral Snake Micrurus tener tener
Thursday, March 2 2017
![](/blog/uploads/Trachemysscriptaelegansalbino1.jpg) Albino red-eared sliders are now readily available in the pet trade.
The beautiful and ever popular red-eared slider, Trachemys scripta elegans, may be the most successful reptilian invader known to the world.
When I was a kid, red-eared slider hatchlings, then sold as “baby green turtles”, were available in just about every 5 and dime and pet store in the nation. Like kids in untold numbers of other households I was a keeper of these pretty chelonians. In those early days of herp-keeping-non-knowledge such inappropriate foods as dried ant pupae and caging such as plastic turtle bowls complete with an insertable plastic palm tree were the rage. And I never heard a single salesperson explain that when adult these turtles ranged from 6 to 12 inches in carapace length (try and keep those in the old style turtle bowls!), that they (like most turtles) were messy eaters, and that maintaining clean facilities was a necessary and almost daily job. The need for vitamins/calcium/full spectrum lighting was virtually unknown. It is small wonder that the majority of these turtles died. It was equally understandable why, if just by accident the red-ears happened to survive and grow, they either escaped or were eventually loosed in the nearest body of water.
Despite a regulation passed in 1975 a regulation that made it illegal to sell or barter chelonian eggs or turtles having a carapace length of less than 4” domestically except for scientific purposes turtles continued (often surreptitiously) to be sold (I was surprised to learn how many 5 and 10 year old scientists we had in this country). And thousands more continued to be exported.
Somewhere along the line feral populations of red-ears began to show up in odd places—New England, the Pacific Coastal region, the desert southwest, France, Asia, Brazil…
It seems that at least some, and from the looks of things, probably many, of the escaped and released red-ears have survived and are breeding.
Check out these statistics from the Global Invasive Species Database that document this turtle now being established in Asia, Australia, Austria, The Bahamas, Bahrain, Belgium, Bermuda, Brazil, British Virgin Islands, Cambodia, Canada, Cayman Islands, Chile, China, Costa Rica, Czech Republic, Denmark, Dominican Republic, Europe, Finland, France, French Polynesia, Germany, Gibraltar, Guadeloupe, Guam, Guyana, Hong Kong, Hungary, Indonesia, Israel, Italy, Japan, Korea, Democratic People's Republic of, Korea, Republic of, Latvia, Lithuania, Malaysia, Martinique, Micronesia, Federated States of, New Caledonia, New Zealand, Northern Mariana Islands, Panama, Philippines, Poland, Puerto Rico, Reunion, Saint Lucia, Singapore, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Thailand, Trinidad and Tobago, United Kingdom, and Viet Nam.
Statistics such as this help undermine our hobby!
Continue reading "Definitely NOT a Stay-at-home, The Invasive Red-eared Slider"
Tuesday, February 28 2017
![](/blog/uploads/Trachemysscriptascriptahatchling.jpg) Even when half grown the patterns and colors of most yellow-bellied sliders is bright and precise.
Worry not! Populations of the yellow-bellied slider are alive and well. It is only the ongoing name games between geneticists and Linnaean biologists that have dictated the changes, shrunken the realm, if you will, of this venerable, wide spread, and well known turtle.
At one time, in one subspecies or the other, Trachemys (once Pseudemys) scripta ranged from our northern tier states southward through Mexico and Central America, and across South America to Argentina. There were then 16 subspecies. Since those early days, varying by authority and their outlook on taxonomy (and their need for a paper), the number of species and subspecies has yo-yoed radically with some researchers elevating a subspecies to full species status while another sinks the creature in question into taxonomic synonymy. The good thing about all of these changes is that they are only on paper, except for those sacrificed during research, the turtles themselves not giving a hoot.
What once was: USA; Was T. scripta scripta, yellow-bellied slider, still valid; was T. s. elegans, red eared slider, still valid; was T. s. troosti, Cumberland slider, still valid; was T. s. gaigeae, now T. gaigeae, Big Bend slider.
Mexico and Central America: Was T. s. venusta, now T. venusta venusta, Meso-American slider; was T. s. cataspila, now T. venusta cataspila, Huastecan slider.
Was T.s nebulosa, now T. nebulosa nebulosa, Baja California slider; was T. s. hiltoni, now T. nebulosa hiltoni, Rio Fuerte slider; was T. s. ornata, now T. nebulosa ornata, Ornate slider.
Was T. s. grayi, now T. grayi, Guatemalan slider; was T. s. yaquia, now T. yaquia, Yaqui slider; was T. s. taylori, now T. taylori, Cuatro Cienegas slider; was T. s. emolli, now T. emolli, Nicaraguan slider.
South America: Was T. s. callirostris, now T. callirostris callirostris, Colombian slider; was T. s. chichiriviche, now T. callirostris chichiriviche, Venezulan slider.
Was T. s. dorbigni, now T. dorbigni dorbigni, Southern D’Orbigny’s slider; was not originally designated, now T. dorbigni braziliensis, Brazilian slider.
So, if we exclude the many introduced and established populations of the red-eared slider, we see that the taxonomic realm of the Trachemys scripta has been reduced from much of the new world to only the USA, a significant change indeed—or not. Just sayin’.
Continue reading " The Shrunken Realm of the Yellow-bellied Slider"
Thursday, February 23 2017
![](/blog/uploads/Amphiumatridactylum4.jpg) Big and voracious! Meet the 3-toed Amphiuma.
Two of the 3 described species of Amphiuma (amphiuma is the accepted common name as well as the genus name for this group of “mud eels”) reside in Florida waters. The 3rd species A. tridactylum, the three-toed amphiuma, comes within a few miles of Florida’s northeastern panhandle but has not yet been verified in the Sunshine State. It is found from eTX to seAL and northward in the Mississippi River Valley to extreme seMO.
This mud eel is a big amphibian. It occasionally attains a length of 40 inches (but is usually under 3 feet long) and attains a quite considerable girth. The dorsum is grayish brown and is sharply delineated friom the much lighter gray belly. Excluding the light lower jawbone, the throat is dark gray.
That this is a hardy creature was shown by one kept in a high school classroom for nearly 2 decades by a friend. Although he made an effort to feed it correctly, students would frequently give it parts of their sandwiches. It ate these ravenously. It was also an accomplished killer of mice, eagerly accepting the occasional white mouse offered. Bill told me that it had never bitten a student, but it was not for lack of trying.
All in all, this was (and is) quite a salamander!
Continue reading "Three-toed Amphiuma"
Tuesday, February 21 2017
![](/blog/uploads/RanaokaloosaeandhabitatStaRosaCntyFL15Jul1620.JPG) It took the combined scrutiny of Jake and me to find this adult male bog frog in its grassy home.
In 1985 the Florida bog frog, Rana okaloosae, Florida’s smallest ranid frog was described by Paul Moler. Adult at about 2” svl, because of its unique call (a repetitive single note) this tiny greenish ranid was found in a small creek on Eglin AFB in 1982 by Moler. It is known from a few dozen small populations in Santa Rosa, Okaloosa, and Walton counties. Florida.
In overall appearance the bog frog is quite similar to the common and widespread bronze frog, Rana clamitans. However from the latter the bog frog differs in having very reduced webbing on the hind feet, lacking a central raised area on the tympani, and the dorsolateral folds, lighter in color than the dorsum, terminate just posterior to the sacral hump. Since all other ranid frogs are considerably bigger than the bog frog when adult, size can also be an identifying factor.
It had been about 10 years since I had last looked this little frog up, but with the help of Paul Moler, and the calling of the frogs, Jake and I were able to find a small population and update our photos. Thanks, Paul.
Continue reading "Florida Bog Frog"
Thursday, February 16 2017
![](/blog/uploads/Apalonespiniferaaspera7.JPG) The 2 dark lines that define this subspecies are easily seen on this young example.
Although softshelled turtles hadn’t figured into our stop on the Pascagoula River, Jake and I were both delighted when we saw a female Gulf Coast spiny softshell, Apalone spinifera aspera, sunning on a snag near the shore. That it was a female was obvious from the heavily pigmented carapace. Not large as females go—the record is about 17 ½”—this female was about 9 inches in shell length. The much smaller males seem to top out at about 8 ½ “ carapace length and are often 1 or 2” smaller.
This subspecies ranges from eNC to seLA. It is found in extreme nFL, where I have seen it in the rivers in the Apalachicola National Forest.
This subspecies differs from all other subspecies of Apalone spinifera in having 2 (rather than just one) lines paralleling the rear of the carapace. Very visible in young example and males, the lines may be difficult to see on heavily pigmented adult females.
Continue reading " Gulf Coast Spiny Softshells"
Tuesday, February 14 2017
![](/blog/uploads/Graptemyspulchra5.jpg) An Alabama map turtle--but not one that I found!
Our destinations on Sunday were access points to the Tombigbee River and If we failed to find Alabama map turtles, Graptemys pulchra) and northern black-knobbed sawbacks, G. n. nigrinoda, there to continue eastward to the Alabama River where we would again try our luck.
Similar to the other sawbacks, G, n. nigrinoda ranges from 3 to 8” in shell length. Males are only about half the size of the females. We had no trouble at all finding tis species on both the Tombigbee and, later, the Alabama rivers. On the other hand, the broad-headed Alabama map turtle, the second largest of this group with females nearing a 12” shell length, has proven tough.
When it was thought that the Alabama map turtle ranged from mid-AL to the Pearl River drainage in MS, I had no trouble finding them. But now that the western forms (the Pascagoula map and the Pearl River map) have become full species, I have had no luck at all in finding the real, remaining, population of the Alabama map turtle. This search was no exception—at least for me. I found none. But Jake scored again. He, after clambering 50 yards over an almost vertical rockface and teetering back and forth while photographing, actually got fuzzy pix of 2 G. pulchra in the river below his perch.
But another trip is forthcoming and the next time success WILL be mine (LOL).
Continue reading " Alabama Map Turtle and Northern Black-knobbed Sawback"
Thursday, February 9 2017
![](/blog/uploads/Graptemysoculifera7.jpg) The carapacial markings of the ringed sawback are often obscured by accumulated silt.
Typical of many of the jaunts that Jake and I embark on, this trip had morphed from a frog search that would have taken us on a round trip of about 700 miles to a frog AND turtle hunt that now would carry us close to 3500 miles. The Pearl River forms the LA-MS state line in the south and extends far into MS as it meanders northward. It is the home of the beautiful little ringed sawback, Graptemys oculifera, and the marginally larger, broad-headed Pearl River map turtle, Graptemys pearlensis, a species that can be difficult to find. Again, based on temporal blotch shape and genetics, the latter once considered the westernmost population of the Pascagoula map turtle is now a full species. Both taxa range from 3 to 8 1/2” in length; again females are the larger.
On our first access to the Pearl (late in the afternoon) we were able to see several ringed sawbacks on a nearby snag and the next day, from a very high and busy bridge, we saw a dozen or so more. It was at this 2nd vantage point that Jake succeeded in finding his “twofer”, finding 2 Pearl River maps among the ringed sawbacks while I, on the opposite end of the bridge, failed. But since I had seen them on an earlier trip, all was not lost.
What now? Back eastward and a bit northward to try for 1 species and 1 subspecies that we had missed on our run westward. And off we went.
Continue reading " Ringed and Pearl River Map Turtles"
Tuesday, February 7 2017
![](/blog/uploads/Graptemysflavimaculata2.jpg) The yellow-blotched map turtle is another aptly named beauty.
Navigator Jake takes his direction giving seriously. With the map turtle atlas open on his lap, he sought directions from both the GPS and his cellphone.
OK—go west, next left, next right, 2nd left, next left… and magically, just ahead of us was a bridge. We had reached the Pascagoula or at least one of its tributaries and as we looked down from the bridge we saw yellow-blotched sawbacks on every snag. And then, a bit upriver we saw 3 big map turtles, the two largest of which had BIG heads and were watching us with great interest. Map turtles are wary—very wary, and we hastened to take as many pix as we were able before the chelonians decided we were a threat and dove from their basking stations.
But we had succeeded. That stop had produced the “twofer” we had hoped for—the yellow-blotched map turtle, Graptemys flavimaculata, a sawbacked species (3-7” females the larger), and the Pascagoula map turtle, Graptemys gibbonsi, one of the broad-headed species (3-8 ½”, females the larger).
Based on temporal marking shape and genetic differences the Pascagoula map turtle, also referred to as Gibbon’s map turtle, was rather recently split away from the Alabama map.
“Where next?” Jake asked.
He looked unconvinced at my response, “the Pearl River.”
But within moments he had reassumed his navigator stance and it was westward, Ho!
Continue reading "Yellow-blotched and Pascagoula Map Turtles"
Friday, January 13 2017
![](/blog/uploads/GraptemysnigrinodadelticolaDeadLakeAL16Jul1615.JPG) The term "sawback" fits this taxon well.
The 2 subspecies of the black-knobbed map turtle, Graptemys nigrinoda, are often referred to as the southern (or Delta) black-knob, G. n. delticola, and the northern black-knob, G. n. nigrinoda. The 2 subspecies are very similar, with the southern form being darker and having a larger plastral figure than, its better known northern cousin.
There has long been controversy regarding the validity of the Delta map as a subspecies. Some contend that it is just a clinal/environmental variation of the black-knob. Because the 2 subspecies intergrade over a large part of the range, many authorities do not even attempt to define the Delta form. But since Peter Lindeman, “Dr. Map Turtle”, saw fit to recognize the southern form in his The Map Turtle and Sawback Atlas, it was high on Jake’s and my “wannasee” list. By the way, both of these subspecies are “sawbacked” forms.
At our next stop it was the lesser known, the southern subspecies, that we hoped to see.
By the time we reached our destination a few miles north of Mobile, AL the parking lot was filled, there were dozens of boats containing happy fishermen on the oxbow, and Delta map turtles (adult size, 3-8”, females the larger) were on every exposed snag. When Jake realized that the turtles were so used to the fishermen that in very un-map- turtle-like manner they continued basking unless closely approached, he shook his head in disbelief.
It was a picture taking kind of morning!
Continue reading " Delta Map Turtle (Sawback)"
Thursday, January 12 2017
![](/blog/uploads/GraptemysernstiadultfemaleEscambia2.jpg) Adult female Escambia map turtles develop hypertrophied heads.
Jake and I had been talking about making a photographic foray for the various southeastern map turtles ( Graptemys) for some time. One hot day in June 2016 we decided that the time had finally come. We had motored to Florida’s western panhandle in search of a bog frog (successful), and the first map turtle on Jake’s list, the Escambia map, was just a hop, skip, and jump further westward. So we found a motel and at sunrise the next morning we began our hopping, skipping, and jumping to the Escambia River drainage, where from a fishing dock, Jake got his lifer Escambia map turtle, G. ernsti, an adult female. The turtle was well above the waterline on a distant snag, but was immediately identifiable.
Although this broad-headed map turtle had been known to exist in the Escambia, Yellow, and Shoal rivers system for years, until 1992 it had been considered the easternmost population of the Alabama map turtle. Females attain a length of 7 to 10+ inches. Males are about half that size.
Continue reading "Map Turtle Time"
Wednesday, January 11 2017
![](/blog/uploads/Gastrothecariobambae7.jpg) Once rather commonly seen in the pet trade, this is no longer the case with the The Rio Bamba marsupial frog, Gastrotheca riobambae.
Wayyyyyy back, from the 1950s to about 2000, importing herps for the hobby occurred at an almost unbelievable volume. Herps came to the USA from southern and eastern Africa, from many South and Central American countries, from Southeast Asia, and even from the various European countries. Within the USA itself, interstate trade in both native and imported herps was rampant and largely unregulated. When compared to today herps were abundant, species available were far more varied, and the asking prices of herps were then very cheap. For example, the 3 species of anurans pictured were once commonly seen in the American pet trade. Think back now—when was the last time you saw any of these offered? Here yesterday, gone or almost gone today. And today will soon be the yesterday when we find in future years that many of the herp taxa that we now take for granted are no longer available.
Continue reading "Forgotten Imports--Anurans"
Tuesday, January 10 2017
![](/blog/uploads/Gonatodesconcinnatusmalebody.jpg) The dark outlined white shoulder marking is characteristic of the males of this taxon.
It was a female of this little (about 3” total length) lizard that I found first, and had she remained quiescent, I would have never seen her. Although the sun shown overhead, bathing the Amazonian canopy in heated brilliance, the rainforest trail that I trod was darkly shaded and relatively cool. The lizard, herself dark except for a single white tailtip band, was also on a dark, mouldering treetrunk. But for the nervously waving tail she. A collared gecko, Gonatodes concinnatus, was nearly invisible. But even in the gloom of the rainforest that seemingly disembodied patch of white waving to and fro caught my attention. I readied the camera but she darted to one side to never be seen by me. About 20 feet further on the trail and I happened across another female of this diurnal gecko wagging her strongly patterned tail. This time I got a picture.
But it was not until the next trip that I had an opportunity to see a male of this beautiful lizard. In fact, I got to see 2 males. The first was brought to me by a villager who had caught the lizard and secured it in a small plastic bag. I was delighted at having the opportunity to carefully observe the lizard. But I was even happier when later that day I was walking by the bird observation platform and I saw another male, this one perched quietly on a large bracket fungus. Camera…
Continue reading "The Collared Forest Gecko"
Monday, January 9 2017
![](/blog/uploads/Pelamisplaturus4.jpg) Although caudal patterns may vary, elsewhere the colors are pretty well standardized.
We rented a tiny boat, a motor, and a driver, on the docks of a small fishing village on Costa Rica’s Pacific coast. Cost had been negotiated successfully, and within a few minutes we were on our way westward on the choppy waters of the bay. Our target species on this watery interlude was the yellow-bellied sea snake, Pelamis platurus, which species was quite common in the region, but that was most commonly seen by fishermen in the ocean slicks, patches of smooth-surfaced water that drifted between the choppy surfaces and when the snake became stranded on the beach.
Although Pelamis grows to nearly 4’ in length, those that we saw ranged from 24 to about 32 inches. On that trip we saw more than 2 dozen of these pelagic serpents. And indeed they are pelagic, ranging from the Asiatic shores of the Indian and Pacific oceans, Africa, and in the New World from Central America to California (rare in the USA). It has also been found far asea. Although this has often been said to be the most widely distributed of the world’s snakes, I’m wondering if the tiny flowerpot (blind) snake is not now a close runner-up?
Male Pelamis tend to be the smaller. This is a fish eating species.
Continue reading "Yellow-bellied Sea Snakes"
Friday, January 6 2017
![](/blog/uploads/Phelsumaklemmerigravidfemale.jpg) This is a gravid female neon day gecko.
When I first saw a Phelsuma klemmeri at Glades Herp I exclaimed to Rob “that thing is brighter than a neon tetra!” And “neon day gecko” was the name that caught on for this yellow headed, blue and green, flattened, 3 ½ inch long mini-beauty.
Despite their small size I have found this small gecko to be easily kept and bred. Although a pair can easily thrive in a 12” cubed reptile cage, mine are in 24 x24x12” terraria. In a well-planted terrarium this size I am able to keep 2.4 of the geckos without fear of serious aggression. Since Epipremnum aureus is a hardy and pretty aroid that provides both humidity and substantial cover for the lizards, this is the planting I most often use. Lengths of bamboo (both vertical and diagonal (*see additional caging comments below)), heat and light are provided on both ends of the tank, thereby allowing the lizards ample room to stay well separated.
There is little question that the males of neon day geckos are territorial, but fewer keepers realize that to a lesser degree the females are also. Little serious physical harm comes from adverse interactions but the stress of persecution may eventually take its toll on the subordinate inhabitants. In a large communal situation, by providing well separated areas of equally ideal habitat, adverse effects from territoriality can be almost eliminated. In a smaller enclosure only a single pair should be kept.
Caging-Feeding suggestions
· Full spectrum lighting and a tight fitting screen top is necessary for this diurnal taxon
· 1/8” crickets, dusted with D3 + calcium as well as a prepared phelsuma diet should be provided
· Ascertain aggression does not occur. Do not crowd.
· Gently mist the terrarium daily. DO NOT overwet.
· 76-80F nights, 84-88F days.
· Vertical or diagonal dry bamboo sections between 1 and 3 inch diameter and as tall as the tank, preferably with natural longitudinal cracks through which the geckos may easily move, should be provided. Gravid female may need a marginally wider than normal opening. Careful use of a circular saw can provide access openings if natural cracks are not present.
· Sit back, relax, and enjoy these wonderful lizards!
Continue reading "Neon Day Gecko"
Thursday, January 5 2017
![](/blog/uploads/Paroeduraandroy3.jpg) The earthen colors blend well with the litter of the forest floor.
Clad in roughened scales of muted browns, tans, grays, white, and charcoal, the little Paraoedura androyensis, pygmy panther gecko, is well suited to life in the leaf litter of the southern and eastern Malagasy deciduous forests. This is the smallest of the 13 (with only one species being extralimital to Madagascar) species in this genus, with females, the marginally larger gender, attaining a total length a bit in excess of 3”. When the gecko is moving about, the tail, shorter than the snout-vent length, is often curled over the body. Dorsally the tail bears numerous conical scales and is studded with large, more rounded, scales ventrally.
This is an easy gecko to maintain. It usually feeds readily and will thrive in a leaf covered, clean soil, substrate at 79 to 88 degrees.They will drink from a shallow water dish but will benefit and will drink droplets when their cage is gently misted. Full spectrum lighting is not necessary for this nocturnal gecko.
Never particularly common is the pet trade, this panther gecko is even less so today than just 10 years ago. Fortunately there are a few breeders that occasionally offer captive bred individuals and a very few wild caught examples are usually available each year.
If you’re thinking of acquiring a pair of geckos, think this species. It is a species that is well worth working with.
Continue reading "Androy Pygmy Panther Gecko"
Wednesday, January 4 2017
![](/blog/uploads/Chelusfimbriatus13.jpg) Matamatas are always difficult to find and a pleasure to see.
I’m probably crossing some line or the other here by mentioning one of these 3 taxa but I’ll have a go at it anyway. The three species—wondrous Amazonians all-- that I have firmly in mind are the matamata, Chelus fimbriatus, the Suriname toad, Pipa pipa, and the Amazonian leaf fish, Monocirrhus polyacanthus, ambush predators all and all amazingly camouflaged aquatic predators.
The matamata grows to 18”, is flattened, and is camouflaged both by its mud color and skin flanges. It is a fish eater that catches prey by extending its head rapidly forward while distending its throat. The resulting vacuum draws an unwary fish into the mouth where it is then quickly swallowed.
The 6” long Suriname toad, primarily an invertebrate eater that will accept small fish, is also camouflaged by color and its flattened appearance. Rather than catching prey like a roving vacuum, this anuran shovels edible items into its wide mouth with its forefeet and fingers.
At 3”, the leaf fish is by far the smallest of these 3 predatory species, and limits itself, at least when adult, to a diet of smaller fish. The mouth of the leaf fish is large, distensible and extendable and a single barbel, in appearance like the stem of a leaf, extends from the lower jaw. Camouflaged by color and a very slow head down approach, this little mud colored (sounds like a broken record doesn’t it?) fish is a hunter to be reckoned with.
Do I see all 3 on every trip? No. But sometimes I do get lucky.
Continue reading "Three Wondrous Amazonians"
Tuesday, January 3 2017
![](/blog/uploads/Ranalivida.jpg) Pretty and very agile, the green cascades frog was imported from Hong Kong.Prior to the turn of the century, occasional herp shipments from Southeast Asia (and most notably from Hong Kong) would include a few interesting anurans. One that I found very interesting was the beautiful and agile green cascades frog. Although imported under the name of Rana livida it was even then recognized that rather than an actual species, the cascades frogs were actually a species complex. Over the years genetic assessment has identified at least 6 additional lookalike species and the Hong Kong form (with which I was familiar) is now recognized as Odorrana chloronota. ( Odorrana livida is now known to be restricted to southern Myanmar.)
As indicated by its common name this is a stream dwelling species, but not indicated by its name is the fact that the waters in which this primarily nocturnal frog occurs are not necessarily cascades. Within the streams the green cascades frog may be seen on boulders, logs, and the stream banks. This species is sexually dimorphic with females attaining a snout-vent length of 5” and adult males being about half that length.
Continue reading "Green Cascades Frog"
Monday, January 2 2017
![](/blog/uploads/Ranaclamitansclamitans68.JPG) A bronze frog, Rana c. clamitans
The controversial generic name of Lithobates has been laid to rest—at least for Holarctic frog taxa.
Holarctic? What, exactly, does that mean and what frog species does it encompass?
Meriam Webster dictionary defines the term Holarctic thusly: “of, relating to, or being the biogeographic region including the northern parts of the Old and the New Worlds and comprising the Nearctic and Palearctic regions or subregions”. Or defined by the Free Dictionary as “a floristic and zoogeographic land area that occupies the extratropical portion of the northern hemisphere; its southern boundary lies roughly along the northern boundary of the Tropic of Cancer”.
In a Facebook post, geneticist David Hillis states “Our paper on the systematics and biogeography of Rana (Holarctic true frogs) is now available as a pdf at this link (final volume and page numbers to come): http://sysbio.oxfordjournals.org/cgi/reprint/syw055.
The actual name of the paper is Spatiotemporal Diversification of the True Frogs (Genus Rana): A Historical Framework for a Widely Studied Group of Model Organisms and Dr. Hillis was one of the 15 authors.
With this paper Lithobates is gone and Rana is back! To Dr. Hillis and the 14 coauthors I extend my profound “thanks.”
Continue reading "A Return to Rana"
Friday, December 30 2016
![](/blog/uploads/Thamnophissauritussackenii6.jpg) Peninsula ribbons seem to outnumber the more northerly blue striped subspecies at Gulf Hammock.
Kenny and I were on a very rural dirt road that is well within an area known as a stronghold for classic “Gulf Hammock” rat snakes the target of that nights search. The total rat snakes found, despite seemingly ideal field conditions, was a resounding zero. But despite the lack of rat snakes we were far from skunked! On both the sand roads and later, on the paved roads, venomous snakes were on the prowl that evening. On the sand roads we found 4 dusky pygmy rattlers, Sistrurus miliarius barbouri, and 2 small Florida cottonmouths, Agkistrodon piscivorous conanti. On the paved roads we added 1 larger (3+ feet) Florida cottonmouths and a single Peninsula ribbon snake, Thamnophis sauritue sackenii, to the evenings total. We left happy, knowing then that we’d be back to try again tomorrow.
Continue reading "Gulf Hammock of Florida"
Thursday, December 29 2016
![](/blog/uploads/Macroclemyssuwanniensis66.JPG) This Suwannee alligator snapper had a 6" carapace length.
Ever get smacked in the headlamp on a dark night by a big water snake that you didn’t know was there? I’ll tell you, it can really catch your attention!
The Santa Fe River was either at its all time lowest or darn close to it. Normally 4 or 5 feet deep at this locale, at the time in question you could then wade across the river without getting much more than your ankles wet! Did I mention that we were in a drought—a drought that showed no sign of easing. I was searching for Suwannee Alligator Snappers, Macroclemys suwanniensis.
The biggest of the alligator snapping turtles stayed pretty close to the deeper pits scoured around old snags and root systems. Smaller snappers, more mobile, hence less restricted, could still be seen in shallower areas. And it was one of these smaller turtles, one about 6 inches long, that I was trying to photograph in situ when I blundered into a big—or at least when it struck at me it seemed big—brown water snake, Nerodia taxispilota.
It was well after dark and I was intent on following a turtle that was at least equally intent on not being followed. In fact, the turtle had just disappeared, having maneuvered quickly into a hidden root system in the undercut bank. Without first looking I leaned against an overhanging limb to stablize myself as I searched (in vain, I might add) and accidentally pinned the water snake against the tree with my shoulder. As water snakes are wont to do, this one (all 3 ½ feet of it—adults can be 5 to 5 ½ feet in total length) took exception to my accidental familiarity, striking at the illuminated and moving headlamp.
I jumped back, tripped, fell (sure glad the river was low!) saw the snake drop into the current, and decided to call it quits. Now, which way was the car?
Continue reading " Snappers and Brown Waters on the Santa Fe"
Wednesday, December 28 2016
![](/blog/uploads/PlacesLangtryroadcutsJun20167.JPG) As in many other locales in Texas, rocky roadcuts between Sanderson and Comstock provide ideal habitat for many herps. Though rainy and dreary as we drove it in 2016, this stretch of highway holds many fond memories.
Jake and I had been in West Texas (Comstock to Big Bend) for more than a week and had been plagued by adverse weather for all but one night. Deluges had curtailed most herp movement for the first 2 nights. This was followed by a high pressure system for the next 6 nights. Jake’s vacation time was quickly drawing to a close, and we were still experiencing bad weather. Hoping to find a particular taxon of earless lizard and to make the most of the persistent high pressure we had elected to head back eastward a day early. By the time we had gotten to Sanderson the sunshine had been obliterated by sullen clouds that stretched to the horizon. The road, somewhere just east of Langtry was wet and a gentle rain was still falling —it too stretching to the eastern horizon. Obliterated with the sunshine was the lizard search.
I would imagine that unless you’re a herper or a birder, the long drive from Sanderson to Del Rio, might be a boring strip of road. Occasional cattle, a raven or two, and a dozen or so 18-wheelers—a roadsign directing you to Pumpville, another for Pandale, the communities of Langtry and Comstock, and a vast reservoir are all you will see.
But for herpers this same stretch of road holds many possibilities, especially if traversed on a dark night during a period of low barometric pressure. For, to many of us, and certainly to me, this is “the gray-banded kingsnake road.” It was from beneath a cattle guard at the corner where Bill Chamberlain’s gas station once stood that with Gordy and Dennie I was to see our first “Blair’s king,” a dark phase (yes, they WERE Blair’s kings back then). And then, just to add to the excitement of that night,on one of the dirt roads (I think it was the road to Pumpville) we found a second Blair’s, a light phase. Although I’ve never duplicated that 2 in one night episode, I’ve added rat snakes, long-nosed snakes, rattlesnakes, and many others to the species found along US90.
Bored by this road? Not I!
Continue reading "Sanderson to Comstock—Memories"
Tuesday, December 27 2016
![](/blog/uploads/Alligatorhatchling.jpg) As hatchlings, alligators are prominently banded with yellow on black.
Alligators are very much a fact of life in the deep south. And our area of Florida is certainly not exempt. We live between a fair-sized pond and a sizable wetland. Just beyond the wetland is Paynes Prairie State Biological Preserve. There is no shortage of gators here. In wandering from pond to wetlands or vice versa gators often stop in our yard. So far he visitors have ranged from 14” to 8’. Because we have dogs the bigger alligators cause us some concern so we escort them out of the yard and at least part way back to the pond. So far none have returned.
Since the wetlands opened across the street from us we have been able to watch and listen to these big reptiles at about any time we choose. Breeding activity (including male bellowing) and territorial skirmishes are seen and heard in April and May. Hatchlings are usually first seen in late May to July. Except on the most inclement of winter days basking adults may be seen year round.
As stated at the outset, gators are very much a fact of life here. We keep our distance and during the breeding season we keep even greater distances from displaying males and nesting females. Dogs on trails, even when on leashes, can lead to seriously adverse gator encounters. Pure and simple, dogs = food. Watch toddlers carefully. Use common sense folks. Gators are big, dominant, predators that often feed in the shallows or on the shoreline. Give them their due! As the cliché states, “Be safe, not sorry!” And I’ll add, if you really love your dog, leave it at home when you’re in gator country.
Continue reading "Alligators?—Ho Hum."
Monday, December 26 2016
![](/blog/uploads/Gerrhonotusinfernalishatchling1.JPG) Hatchling Texas alligator lizards are prominently marked.
The family Anguidae comprises species from Europe, Africa, Mexico, Asia and the United States. Several of the species are limbless and others, such as the various alligator lizards, have short but fully functional limbs. All have functional eyelids, most have a lateral groove, and the broad tongue is protrusible and bears a slight notch at the tip.
To many hobbyists, the Texas alligator lizard, Gerrhonotus liocephalus infernalis--attenuate, short limbed, and long-tailed--is the king of the family. Certainly it is an interesting species that, although not rare, is secretive and can be difficult to find. Although essentially terrestrial, hiding beneath all manner of surface debris (leaf litter, logs, rocks, cardboard, etc.), this lizard is quite capable of climbing and may ascend juniper or other rough barked trees/shrubs.
Adults of this impressive lizard are gray(ish) or brown(ish) with poorly defined lighter dorsal barring from nape to tailtip. The ground color of juveniles (and hatchlings especially) is much darker and the dorsal barring is lighter and more precise. The long tail is slightly prehensile and readily autotomized.
This is a lizard of Texas’s Edwards Plateau westward to the Big Bend region and from there southward to San Luis Potosi.
Continue reading "Texas Alligator Lizard"
Friday, December 23 2016
![](/blog/uploads/Ranacatesbeiana30.JPG) Big, loud, prolific, and predatory describe the adult bullfrog well.
Besides the painted turtles mentioned in my last blog, the ponds in the one-time zoo in my hometown had a sizable (both in numbers and body size) and vocal population of bullfrogs, Rana catesbeiana. In itself this was not unusual. By definition bullfrogs are big, noisy, and prolific. Having a body size of 8+ inches, males of this very aquatic species are larger than females. And although females are capable of making escape and fright screams, it is the males that produce the more typical croaks, bellows, and “jug-o-rums.” That takes care of the big and noisy parts of my above statement, but how about prolific? Female bullfrogs produce egg masses that contain from about 7,500 eggs to more than 25,000! That, my friends, is prolific! Fortunately, many predators, from cats to raccoons to herons to water snakes, to bigger bullfrogs to aquatic insects consider bullfrog tadpoles and metamorphs a tasty repast, so not all young bullfrogs make it to the adult size. In fact, it is probable the most don’t survive past the juvenile/subadult stages.
But what about those that do? Well, back to the bullfrogs in my hometown zoo ponds where, secluded and protected by lush water lily/lotus growth dozens (if not hundreds) of wee bullfrogs evaded predation, survived and grew and grew. Most of the froglets were normal, but I would find a few—1 or 2—each year that had a similar deformity—3 hind legs! Cause? Unknown. And I never found an adult with this anomaly.
Continue reading "A Mention of Bullfrogs"
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