Insects (Arthropoda: Insecta) collected on bovine feces after different times of field exposure in Itumbiara, Goias, Brazil

The collection of insects in cattle dung deposited in pasture were observed from January to October 2001 in Itumbiara, Goias, Brasil. Cattle dung pats were exposed at a pasture for 24, 48, 72, 96, 120, 144, 168, 192, 216 and 240 hours and were than taken to the laboratory separate from each other, for Diptera extraction. A total of 100 dung pats were exposed at pasture. A total of 3,229 Scarabaeidae (Coleoptera) and 3,099 Diptera were collected. The most abundant species dipterous were: Palaeosepsis spp. and Sarcophagula occidua and coleopterous: Ataenius aequalis e Aphodius lividus. The periods of the highest population peak were: 24, 48 and 72 hours.