Hallberg's cloud forest snake

Hallberg's cloud forest snake (Cryophis hallbergi), also known commonly as la culebra de bosque mesófilo de Hallberg in Mexican Spanish, is a species of snake in the subfamily Dipsadinae of the family Colubridae. The species, which is endemic to Mexico, is monotypic in the genus Cryophis.

Etymology
The specific name, hallbergi, is in honor of Thomas Boone Hallberg (born 1923), who is an American botanist who has been working in Mexico for over 50 years.

Geographic range
C. hallbergi occurs in the Sierra Juarez and Sierra Mazateca of northern Oaxaca state, at elevations of 1,200 –.

Habitat
The natural habitat of C. hallbergi is undisturbed cloud forest.

Reproduction
C. hallbergi is oviparous.