Coba jelasin Spesies dari Drymarchon dong

Drymarchon caudomaculatus WÜSTER, YRAUSQUIN & MIJARES-URRUTIA, 2001

Drymarchon melanurus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)

The Indigo Snake Systematics Page: A New Species of Indigo Snake (Drymarchon) from Venezuela, and a Reclassification of the Genus.

"Black Snakes": Identification and Ecology - University of Florida fact sheet.