Musculature of the Male Abdominal Segments and Terminalia of Spilogona Schnabl, 1911 (Diptera, Muscidae: Coenosiinae).

The abdominal and pregenital segments and genitalia were studied in males of Spilogona Schnabl, 1911: S. tundrae (Schnabl, 1915), S. sanctipauli (Malloch, 1921), and S. zaitzevi (Schnabl, 1915) (Muscidae, Coenosiinae). The examined species are very similar in the structure of the sclerites and muscles of their terminal segments, and more strongly resemble the previously studied members of Mydaeinae (especially the genus Graphomya) than Muscinae. The well-developed pregenital sclerites and muscles in Spilogona indicate the basal position of this genus within Muscidae relative to Muscinae and probably Mydaeinae. [ABSTRACT FROM AUTHOR]