Tantilla melanocephala

Tantilla melanocephala, commonly known as the black-headed snake or neotropical black-headed snake, is a species of small colubrid snake endemic to Central America and South America.

Geographic range
In Central America it is found from Guatemala south to Panama. In South America it is found from Trinidad and Tobago south to northern Argentina.

Description
Tantilla melanocephala may attain a total length of 50 cm, which includes a tail 10 cm long.

Dorsally, it is pale brown or red, and some specimens also have 3 or 5 narrow brown stripes. The top of the head and neck are black or dark brown. Ventrally, it is yellowish white.

The dorsal scales are smooth, without apical pits, and arranged in 15 rows at midbody.