Graphomya
Robineau-Desvoidy, 1830
Graphomya is a of true flies in the Muscidae, Mydaeinae. The genus contains at least 12 recognized distributed across the Holarctic region, with nine species documented from North America. Species exhibit in stripe patterns. Several North American species were described by Arntfield in 1975, including G. alaskensis, G. columbiana, G. interior, G. minuta, G. occidentalis, G. transitionis, and G. ungava.
Pronunciation
How to pronounce Graphomya: //ɡræfˈhɒmiə//
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Identification
Identification relies on examination of male and female terminalia and stripe patterns. North American can be distinguished using the keys provided by Arntfield (1975). G. maculata, G. americana, and G. idessa were historically confused and require careful examination of genitalic structures to separate. G. adumbrata is distinguished by specific terminalia .
Appearance
Medium-sized muscid flies. with distinct longitudinal stripes on the ; stripe pattern differs between sexes. Terminalia of males and females show -specific morphological characters useful for identification. Specific coloration and body proportions vary among species.
Distribution
Holarctic distribution. North America: nine recognized with documented locality records across Canada and the United States, including Alaska. Palearctic: documented from Denmark, Norway, and Sweden. G. adumbrata has been recorded with discussed and geographical distribution.
Similar Taxa
- Other Muscidae generaShares -level characteristics; distinguished by combination of stripe patterns and genitalic specific to Graphomya.
More Details
Taxonomic history
G. americana and G. idessa were previously synonymized under G. maculata but were resurrected as valid by Arntfield (1975). Seven North American species were newly described in the same revision.