Foram realizadas coletas de tabanídeos a 40 metros de altura, em uma torre metálica, na Estação Experimental de Silvicultura Tropical, Amazonas, Brasil. As coletas foram realizadas de janeiro a dezembro de 2004, durante três noites de transição lunar minguante/nova de cada mês, das 18 às 6 horas. As mutucas foram capturadas em um lençol iluminado com lâmpada de luz mista de vapor de mercúrio de 250 watts e lâmpada de 20 watts BLB. Foram coletados 216 espécimes, dos quais 135 machos e 81 fêmeas, alocados em 29 espécies. Três machos desconhecidos são descritos pela primeira vez: Catachlorops halteratus Kröber, 1931, Leucotabanus janinae Fairchild, 1970 e Leucotabanus pauculus Fairchild, 1951.

Tabanids were collected at a height of 40 meters on a metallic tower, at Estação Experimental de Silvicultura Tropical, Manaus, Amazonas, Brazil. Samples were collected monthly from January to December of 2004, during three nights of lunar transition third quarter moon/ new moon from 06 p.m. to 06 a.m. Horse flies were captured on a vertical sheet illuminated by a 250-watts mixed mercury vapor light and 20-watts black-light (BLB) lamps. 216 specimens were collected, of which 135 were males and 81 were females belonging to 29 species. Males of three species with unknown males are described for the first time, namely: Catachlorops halteratus Kröber, 1931, Leucotabanus janinae Fairchild, 1970 and Leucotabanus pauculus Fairchild, 1951.