Biological vector of bluetongue virus is

Biological vector of bluetongue virus is Culicoides.
Culicoides Latreille is biological vector of bluetongue virus (BTV), a member of family Reoviridae, genus Orbivirus. About 30 species of Culicoides have been identified as competent BTV vectors worldwide.
Bluetongue virus (BTV) is spread by the bites of Culicoides midges and can infect ruminant livestock such as cattle, sheep, and goats, wild ruminants such as deer, and camelids.