Sphegina adusta. Etymology. The name comes from the Greek words 'a', meaning 'without', and 'chaite', meaning 'long hair', referring to the lack of strong setae laterally on tergite I. Description. In male specimens, the body length is 6.1 to 7.2 millimeters and the wing length is 5.5 to 6.3 millimeters. The face is concave with a strongly developed frontal prominence. The occiput is black; gena and mouth edge dark brown with large subtriangular non-pollinose shiny area; antenna dark brown with black setae dorsally on scape and pedicel; thorax dark brown to black; postpronotum red-brown; scutellum black and semi-circular; pro- 	Sphegina achaeta
10106485	and mesoleg with femora and tibiae dark brown to black on apical ⅔ to ¾; pro- and meso- tarsi with tarsomeres 2–5 black; metaleg with dark brown coxa, yellow trochanter; dark brown metafemur with basal ¼ yellow, incrassate; metatibia black and yellow biannulate, without apicoventral dens; metatarsus entirely black with a thin basal tarsomere. The basal flagellomere is short and oval and the arista is pilose, slightly more than 2.5 times as long as the basal flagellomere. No female specimens are known. Sphegina achaeta Sphegina (Asiosphegina) achaeta is a species of hoverfly in the family Syrphidae found in Myanmar. It	Sphegina achaeta
10106486	Sphegina adusta Sphegina adusta Sphegina (Asiosphegina) adusta is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by its large size, left side surstylus with a number of unusual lobes, and general dark-brown coloration. It's similar to S. atricolor" and "S. furva", but unlike these species it lacks a transverse crest at the base of the lobe located sinistrolaterally at the posterior margin of male sternite IV. Etymology. The name comes from Latin 'adusta', meaning 'tanned' or 'brown', referring to its almost entirely dark-brown coloration. Description. In male specimens, body length is 8.3  millimeters and wing length is 6.3 millimeters. The face is strongly concave, moderately projected antero-ventrally, with a weakly developed frontal prominence. The face is blackish brown, medially slightly paler brown; gena brown; occiput black; antenna blackish; thorax blackish brown; scutellum shiny dark brown, the margin slightly paler brown; pro- and mesolegs brown; terga III and IV brownish black. The wings are slightly brownish with brown stigma. The basal flagellomere is as long as it is broad and semi-quadrangular; the arista is covered in soft hairs. The surstylus is strongly asymmetrical and the superior lobes are symmetrical; the left  side surstylus has a number of unusual lobes. Female specimens are much the same except for normal sexual dimorphism; body length is 8.6 millimeters and wing length is 7.7 millimeters. Tergite II is predominantly dark-orange and tergite I has an oblique row of four yellow setae. Sphegina adusta Sphegina (Asiosphegina) adusta is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by its large size, left side surstylus with a number of unusual lobes, and general dark-brown coloration. It's similar to "S. atricolor" and "S. furva", but unlike these species it