Which cytospecies of the Simulium damnosum complex did Blacklock incriminate in the transmission of Onchocerca volvulus?
D000818:Animals; D004175:Diptera / Q000145:classification / Q000469:parasitology*; D049673:History, 20th Century; D006801:Humans; D009855:Onchocerciasis / Q000266:history / Q000635:transmission*