venomous
Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a sti ...
viper
The Viperidae (vipers) are a family of snakes found in most parts of the world, except for Antarctica, Australia, Hawaii, Madagascar, and various other isolated islands. They are venomous and have long (relative to non-vipers), hinged fangs tha ...
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
. It is easily distinguished from '' B. caudalis'' by its heavily speckled belly and lack of any supraocular "horns". No
subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
are currently recognized.
Taxonomy
Its common names include Angolan adderSpawls S, Branch B. 1995. ''The Dangerous Snakes of Africa''. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. . and Bocage's horned adder.
Description
The maximum recorded total length (body + tail) is .
.
The type locality given is ''"sur les bords de la rivière ''Calae'', l'un des affluents de ''Cunene'', entre le 13o et 14o parallèle á l'est de ''Caconda''."'' Kunene), Cacanda, Angola.
It commonly inhabits rocky mountain slopes.
Behavior
Nothing is known of its behavior, as less than 20 specimens have ever been collected.
Venom
Nothing is known of the venom composition, and no bites have ever been recorded.