Face Fly, Musca autumnalis De Geer (Diptera: Muscidae)
Reference work entry
Face fly, Musca ( Eumusca) autumnalis De Geer, is one of only two Musca species recorded in North America, the other being the house fly, M. ( Musca) domestica L. Three M. autumnalis subspecies have been described; two occur in Uganda and a third in Somalia (Fig. 3). We doubt their status because of the great distance from other conspecific populations, all of which occupy temperate regions and undergo a facultative reproductive diapause when daylengths approach 12 h. Recent genetic research utilizing mitochondrial nucleotide sequence variation suggests the occurrence of a morphologically indistinguishable sibling species in southeastern Kazakhstan.
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