Pseudoeurycea orchimelas, commonly known as the San Martin worm salamander, is a species of salamander in the family Plethodontidae. It is endemic to Veracruz, Mexico, where it is known from the Sierra de los Tuxtlas at elevations of above sea level. Description Males measure and females in snout–vent length. The average tail length is for males and females, respectively. The head is wider than the body; the eyes are protuberant. There are ten costal grooves. The specific name orchimelas, from the Greek orchis (=testicle) and melas (=black), refers to the black pigmentation of the outer epithelial layer of the testes and vasa deferentia in adult males. This trait distinguishes it from Pseudoeurycea orchileucos with white testes and vasa deferentia. Habitat and conservation Natural habitats of Pseudoeurycea orchimelas are lowland wet forests. They live in leaf litter terrestrially and fossorially. The species is threatened by habitat loss (deforestation) caused by expanding subsistence farming and human settlements and by logging. It is quite an abundant species but secretive. References orchimelas Amphibians described in 2002 Endemic fauna of Los Tuxtlas Endemic amphibians of Mexico Taxonomy articles created by Polbot