Reptilia - Ophidia - Colubridae

Alternative spelling: Gyalopium

Parent taxon: Colubrinae according to P. Uetz 2005

Sister taxa: Ameiseophis, Arizona, Cemophora, Chilomeniscus, Coluber, Coronella, Dakotaophis, Drymarchon, Drymobius, Elaphe, Ficimia, Floridaophis, Lampropeltis, Liochlorophis, Masticophis, Miocoluber, Nebraskophis, Opheodrys, Oxybelis, Paracoluber, Phyllorhynchus, Pituophis, Rhinocheilus, Salvadora, Sonora, Stilosoma, Tantilla, Telescopus, Texasophis, Trimorphodon, Zelceophis

Subtaxa: none

Ecology: ground dwelling insectivore