赵氏长足寄蝇，节肢动物门-昆虫纲-双翅目-寄蝇科。Body length. 12.6?15.0 mm.Male. Head with antenna brownish black except basal 1/2?1/3 of 1st flagellomere reddish yellow; palpus reddish yellow, sometimes dark brown basally or mostly. Frons 1/6?1/8 head width; frontal vitta about twiceas wide as fronto-orbital plate; parafacial about twice as wide as 1st flagellomere; facial carina arched in lateral view, flattened on ridge below; gena 0.4?0.5 times as wide as eye height; lower margin of face protruding forward. Inner vertical seta 0.3?0.4 times as long as eye height and slightly shorter than ocellar seta; 12 inclinate frontal setae; ocellar seta as strong as upper frontal seta; fronto-orbital plate and parafacial bare; vibrissa inserted above lower margin of face by about length of pedicel. Antenna falling short of lower margin of face by about length of 1st flagellomere, latter about 2.5 times as long as pedicel; arista long plumose, total width including plumosity 3?4 times as wide as 1st flagellomere. Prem