■ Taxonomic and Host Catalogue of the Tachinidae of America North of Mexico
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Genus BESSERIA Robineau-Desvoidy, 1830

BESSERIA Robineau-Desvoidy, 1830: 232. Type species: Besseria reflexa Robineau-Desvoidy, 1830, by monotypy [Palearctic].
APOSTROPHUS Loew, 1871: 310, 311. Type species: Apostrophus suspectus Loew, 1871 (= Actia zonaria Loew, 1847), by subsequent designation of Coquillett, 1910b: 509 [Palearctic]. See note below.
APINOPS Coquillett, 1897: 31, 67. Type species: Apinops atra Coquillett, 1897, by original designation.
OEDEMASOMA Townsend, 1908: 80. Type species: Oedemasoma nuda Townsend, 1908 (= Wahlbergia brevipennis Loew, 1863), by original designation.

anthophila (Loew, 1871).– Palearctic, Northwest Territories, Alberta (S&A, 1965), Alaska, Manitoba, Ontario (CNC).
– Apostrophus anthophilus Loew, 1871: 310. Type data: holotype male (ZMHB) (according to Townsend, 1938: 89, and Herting, 1979a: 5). Type locality: Germany, Bavaria, München-Geiselgasteig (according to Herting, 1979a: 5).
– Besseria incompleta Curran, 1926a: 84. Type data: holotype female (CNC). Type locality: Canada, Ontario, Macdiarmid.

atra (Coquillett, 1897).– Québec and Maine to Kansas and Georgia, also Texas (S&A, 1965), Ontario (CNC).
– Apinops atra Coquillett, 1897: 68. Type data: holotype male (USNM). Type locality: USA, southern Illinois.

brevipennis (Loew, 1863).– British Columbia to North Dakota, south to California, Arizona, and Nebraska (S&A, 1965), Saskatchewan, Iowa (CNC).
– Wahlbergia brevipennis Loew, 1863: 322. Type data: holotype female (MCZ). Type locality: USA, Nebraska.
– Oedemasoma nuda Townsend, 1908: 80. Type data: holotype male (USNM). Type locality: USA, Nevada, Ormsby County.

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