social facebook box instragram-icon you-tube-logo social-google-plus social twitter slideshare-icon

SUBFAMILY Boiginae - Back-fanged Snakes

Sand Snakes and co.

This is a big and medically important sub-family with over 73 genera and some 330 species in total. The larger number, are found in Africa and tropical America and are usually quite aggressive snakes once in the hand. All of them possess grooved rear fangs on the top jaw and have varying degrees of toxicity.

The Boomslang Dispholidus typus and the Twig Snakes Thelotornis sp. are both deadly and although bites are rare and usually on careless handlers they are both responsible for several human fatalities. Blanding’s Tree Snake Boiga blandingii is thought to also have a deadly venom so should be handled with extreme caution.

11 genera are found in our part of East Africa and include the common Sand Snakes Psammophis sp. and the Beaked Snakes Rhamphiophis sp.

Tana Delta Cat Snake
Crotaphopeltis braestrupi
Tana Delta Cat Snake

Degeni's Cat Snake
Crotaphopeltis degeni
Degeni's Cat Snake

White Lipped Cat Snake
Crotaphopeltis hotamboeia
White Lipped Cat Snake

Black Tiger Snake
Telescopus dhara somalicus
Black Tiger Snake

African Tiger Snake

Telescopus semiannulatus

African Tiger Snake

Broadly's Cross Barred Tree Snake
Dipsadoboa flavida broadleyi
Broadly's Cross Barred Tree Snake

Striped Swamp Snake
Dromophis lineatus
Striped Swamp Snake

Eastern Link Marked Sand Snake
Psammophis biseriatus
Eastern Link Marked Sand Snake

Olive Sand Snake
Psammophis mossambicus
Olive Sand Snake

Southern Speckled Sand Snake

Psammophis punctulatus

Southern Speckled Sand Snake

Coastal Stripe-bellied Sand Snake
Psammophis orientalis
Coastal Stripe-bellied Sand Snake

Highland Stripe-bellied Sand Snake
Psammophis sudanensis
Highland Stripe-bellied Sand Snake

Tanganyika Link Marked Sand Sn..
Psammophis tanganicus
Tanganyika Link Marked Sand Sn..

Eastern Bark Snake
Hemirhagerrhis hilderbrandtii
Eastern Bark Snake

Keller's Bark Snake
Hemirhagerrhis kelleri
Keller's Bark Snake

East African Skaapsteker
Psammophylax multisquamis
East African Skaapsteker

Rufous Beaked Snake
Ramphiophis rostratus
Rufous Beaked Snake

Red Headed Beaked Snake
Rhamphiophis rubropunctatus
Red Headed Beaked Snake

Blanding's Tree Snake
Boiga blandingii
Blanding's Tree Snake

Powdered Tree Snake
Boiga pulverulenta
Powdered Tree Snake

Coastal Boomslang

Dispholidus typus typus

Highland Boomslang
Dispholidus typus keniensis

Eastern Savanah Vine Snake

Thelotornis mossambicus

Eastern Savanah Vine Snake

Forest Vine Snake
Thelotornis kirtlandii
Forest Vine Snake