Simulium (Psilopelmia) virescens, a new black-fly species (Diptera: Simuliidae) from the southwestern region of the state of Bahia, Brazil
The last-instar larva, pupa, male and female of Simulium virescens sp.nov.are described and illustrated.This species has a peculiar larva, which has an elongated head capsule and light-green colour.The first thoracic segment has tubercle on its dorsal region and the third thoracic segment has one pair of tubercles; the first to the fourth abdominal