Category: Colubridae

Sonoran Lyresnake in Yavapai County, Arizona

Posted on by Bryan Hughes

We found this Sonoran Lyresnake on the move on a night hike in Yavapai County sevearl years back. This one is typical of the species for the area, with chaotic brown and tan blotches over a beige body, with a relatively disoganized look compared to some of the more cleanly banded version found elsewhere. They’re slightly venomous, feeding on lizards, rodents, and bats. It’s not harmful to humans, but I still avoid a bite like I would from any snake.

Devitt, T. J. (2006). Phylogeography of the Western Lyresnake (Trimorphodon biscutatus): Testing aridland biogeographical hypotheses across the Nearctic–Neotropical transition. Molecular Ecology, 15, 4387–4407. https://doi.org/10.1111/j.1365-294X.2006.03015.x

Mackessy, S. P., & Saviola, A. J. (2016). Understanding biological roles of venoms among the Caenophidia: The importance of rear-fanged snakes. Integrative and Comparative Biology, 56(5), 1004–1012. https://academic.oup.com/icb/article/56/5/1004/2420638

A Colorful Longnosed Snake

Posted on by Bryan Hughes

I found this Longnosed Snake (Rhinocheilus lecontei) near Phoenix many years ago. Interestingly, this species is most often mistaken for a kingsnake by locals, even (especially!) by those who identify strongly as “born and raised here.” It’s likely the case that the majority of “kingsnakes” seen by the typical Arizona resident are actually Longnosed Snakes. This one has a particularly high amount of the red-orange color that can help differentiate it from similar looking species, making it a bit easier.

Here’s a video we made that helps learn to identify them compared to kingsnakes: https://youtu.be/ysE-MLzu_9Y?si=9CPYtboddxjz50Rg

Central American Lyresnake in Costa Rica

Posted on by Bryan Hughes

A morning flight out of Costa Rica gave me one extra evening near the airport in Liberia, Costa Rica, to end a family vacation. I went into the coastal thornscrub to see what there was to see, and found a few of these large Central American Lyresnakes. They seem thicker and less likely to bite than the thin, bug-eyed lyresnakes here in the United States. Handling them seems a bit more like it’s a gophersnake or ratsnake in comparison. Unlike those snakes, however … these do have a relatively mild venom, that I would not like to test from one of these big snakes.