The Bitis arietans somalica, also known as the Somali puff adder or Abeeso in Somali, is a highly venomous viper subspecies found only in Somalia, eastern Ethiopia, and northern Kenya.
It is distinguished from B. a. arietans by its keeled subcaudals. Normally, B. arietans grows to a total length (body and tail) around 800âÂÂ900 mm (about 32-36 in). In northern Kenya, Somalia, and though, they grow unusually large, reaching total lengths up to .
This snake is found in northeastern Kenya, eastern Ethiopia and Somalia (including Coiama Island). The type locality given is "Bohodle, 2100 ft." (Bohodle, 640 m).