A young female Sri Lankan tree viper.
For many years Patti and I kept and bred a couple of dozen species of tree vipers of several genera. Among my favorites was the Sri Lankan species, Trimeresurus trigonocephalus. They were of moderate size (usually 2 to 3 ½ feet) , usually of reasonably equable disposition, always of beautiful color, and since they are both dimorphic and dichromatic they are an easily sexed taxon. Males, the smaller gender usually have much more black in the lateral and dorsal pattern than the primarily green females. Additionally, this taxon does not require brumation or other pronounced temperature manipulations to be successfully bred. And when and if bred these long-lived arboreal pit vipers bear living young (neonates are7 ½ to 9 inches long) that usually feed readily on thawed pinkies. Litters of 20 to 25 have been reported but the females we kept usually birthed 5 to 10 babies once a year. This taxon is light-bodied enough to allow a keeper to incorporate sturdy vining plants (Epipremnums and/or Philodendrons) and horizontal tree branches into beautiful terrarium designs. How much easier and fulfilling could keeping a venomous snake be?

A pretty adult Christmas tree phase eyelash viper.

Of the many tree vipers, one or more of the many phases of the Eyelash Viper, Bothriechis schlegelii, are often the first “hot species” kept as a hobbyist’s herp experience grows. Although this Latin American tree viper is often available in grays, olives, pinks, and oranges, there seem to be 3 phases, the yellow, the tiger, and the Christmas Tree, that are the most popular. All of these are normal and natural colors, designed by Mother Nature. Although they may have been line bred to “improve” or intensify color or contrast, none are the creations of hobbyist breeders. Since Christmas is tomorrow, it seems appropriate that I at least make mention of this color variation.

It was close to a half century ago when Patti and I first visited Costa Rica. On that trip we were fortunate to meet and be shepherded by Peter and Suzi Seigfried. Peter took us up mountains and down into valleys, into the forests, and along streams. And it was along the forested streams that we first became acquainted with eyelash vipers in habitat. The first we saw, a gray baby, was on an afternoon hike. As eyelash vipers go, this was a pretty “blah” but since it was my first I took photo after photo of the snake. Peter assured me that we would actually see some pretty ones before the trip was over. And he was right. The next one was a beautiful yellow (oropel) example and it was in a banana clump right next to the home of one of Peter’s friends. More pix and more assurances from Peter that we would see more of these pit vipers. Another drive and we were at a tiny hotel in Palmar Norte. The next morning we were on the road again and Peter drove us to visit another of his friends at a locale that if I ever knew I have long forgotten. But I haven’t forgotten the snake we saw. Again in bananas, Peter pointed out the most beautiful pit viper I had until then seen. It was big, it was green with pink and red trim, and although I then thought of it then as a “normal phase” I was looking upon my first “Christmas tree” (hobbyist name) eyelash viper. More pix and many, many fond memories. Herping just doesn’t get any better.

Happy Holidays to all.