Caudals and Calyces: The Curious Case of a Consumed Chiapan Colubroid

Jonathan A. Campbell, Eric N. Smith, and Alexander S. Hall - Department of Biology, University of Texas at Arlington, Arlington, Texas USA

A new genus and species of colubroid snake is described from the isolated highlands of western Chiapas. This enigmatic little snake possesses a unique suite of characters that defies placing it in any known genus and clearly distinguishes it from all known genera. Several of the most unusual features include subcaudals undivided throughout the length of the tail and a simple hemipenis completely adorned with calyces and having a sulcus spermaticus that remains unbifurcated until the apical portion of the organ. Neither of these characteristics is known for any other colubroid of the Western Hemisphere.

How Amira-Avizo Software is used

Avizo used to isolate skulls from CT scans and to measure skull morphology.