Musculature of the Male Abdominal Segments and Terminalia of Mydaea urbana (Meigen, 1826) and Graphomya maculata (Scopoli, 1763) (Diptera, Muscidae: Mydaeinae)

Abstract

The structure of the abdominal and pregenital segments and genitalia was studied in males of Mydaea urbana (Meigen, 1826) and Graphomya maculata (Scopoli, 1763) (Muscidae, Mydaeinae). Reduction tendencies were revealed in the pregenital segments and musculature in Muscinae as compared with Mydaeinae, and also in the genitalia of Muscidae as compared with Scathophagidae (Scathophaga stercoraria). The genus Graphomya was found to be similar to Mydaea but different from the tribe Muscini in the characters of the sclerites and muscles of the male genitalia and pregenital segments; this confirms the position of Graphomya in the subfamily Mydaeinae.