Trichomyia andina, a new species of non-hematophagous psychodid fly is described and illustrated from males collected in the Risaralda Department, Colombia. This species belongs to the subgenus Opisthotrichomyia Bravo, 2001 and is distinguished from congeners in having a gonostyle broad, multipartite, partially serrated and infuscated, with a long hyaline apex directed inward and backward. The subgenus Opisthotrichomyia is now comprised of seven species, including T. brevitarsa (Rapp 1945), T. vargasi Barretto, 1954, T. nocturna Bravo, 2001, T. festiva Bravo, 2001, T. fluminensis Bravo, 2001, T. riodocensis Alexander, Freitas & Quate, 2001, and T. andina, sp. nov.
Trichomyiinae; Opisthotrichomyia; new species; Andean region; Colombia
