Abstract
Nephochaetopteryx Townsend, 1934 is a genus of flesh flies predominantly Neotropical in distribution, which comprises small species (4.0–7.3 mm) characterized mainly by vein R1 fully setulose dorsally and wing usually fumose between apical part of vein R2+3 and vein C. The taxonomic revision of the genus resulted in 39 valid species, of which 12 are new to science: N. boruca sp. nov., N. canga sp. nov., N. coendu sp. nov., N. cuzco sp. nov., N. equatoriana sp. nov., N. inca sp. nov., N. lamasi sp. nov., N. matinta sp. nov., N. psittacocercus sp. nov., N. sofiae sp. nov., N. similis sp. nov. and N. tembe sp. nov. Nephochaetopteryx shannoni Dodge, 1968 is a junior synonym of N. flavipalpis Lopes, 1936, syn. nov. and N. linharensis Tibana & Santos 1997 is a junior synonym of N. pallidifacies Lopes 1975, syn. nov. A key to the males of all valid species is given, as well as detailed illustrations of the male terminalia.
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