Night Adders
Causus
The Causinae are a monotypic subfamily of venomous vipers found only in sub-Saharan Africa. It was created for the genus Causus, a group considered to be among the most primitive members of the family Viperidae based on head scalation, oviparity, venom apparatus, and because they have round pupils. However, this is contradicted by recent molecular studies. Six species are currently recognized. They are commonly known as night adders.
7 branches of this genus, most-observed first · about 7 known species
Rhombic Night Adder
speciesCausus rhombeatus
Snouted Night Adder
speciesCausus defilippii
Spotted Night Adder
speciesCausus maculatus
Forest Night Adder
speciesCausus lichtensteinii
Green Night Adder
speciesCausus resimus
Two-lined Night Adder
speciesCausus bilineatus
Rasmussen's Night Adder
speciesCausus rasmusseni
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Causus in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 30818.