A study of the arthropod fauna from bovine dung pats in the State of Goiás, Brazil, was carried out from January to December, 1998. Twenty samples of bovine dung were taken at random, each month, from eight day old pats, placed in plastic containers and taken to the laboratory. The arthropods were extracted by flotation in water in order to determine the frequency of Coleoptera, Diptera, Hymenoptera and Macrochelidae (Acarina) considered important in the degradation of cattle dung, and in the control of dung flies. Fifty two arthropod species belonging to 10 families were collected: 20 of Coleoptera (three families), 12 of Diptera (three families), 10 of Hymenoptera (three families) and six of Macrochelidae (Acarina).
This work reports the first occurrence of Zaeucoila incompleta (Kieffer) as a parasitóid of Diptera in Brazil. Weekly samples were taken with water traps, five placed at the pastures and five in the nearby native vegetation. These traps were made of yellow buckets measuring 30 cm in diameter and filled with 2l of trap water, 2 ml of detergent and 2 ml of formaldehyde. During the year 1998 thirty five examples of Z. incompleta were collected in April, June and July. These data contribute to the knowledge of parasitoids fauna in Brazil. KEY WORDS: Insecta, Cynipoidea, pasture, water traps. Recebido em 07/02/2000. Aceito em 15/03/2001.
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