(Western) Black Tree Snake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Colubridae
- genus: Thrasops
- species: Thrasops occidentalis
Malanville- Natitingou
- Tanguiéta
Atakora- Abomey-Calavi
- Allada
- Ouidah
Atlantique- Dassa-Zoumé
- Savalou
- Savé
Collines- Cotonou
Littoral- Comé
- Grand-Popo
- Lokossa
Mono- Porto-Novo
Ouémé- Abomey
Zou
Benin