Cydistomyia sp. B

Mackerras, I. M., Spratt, D. M. & Yeates, D. K., 2008, Revision of the horse fly genera Lissimas and Cydistomyia (Diptera: Tabanidae: Diachlorini) of Australia, Zootaxa 1886 (1), pp. 1-80 : 74

Cydistomyia sp. B

Material examined. QLD: 1♀, Little Mulgrave R., Gordonvale, Nov., G.B. Fairchild ( ANIC) .

A small, greyish brown species represented by a single female appears to be distinct, although close to C. musgravii and collected with a series of good C. rivularis . Length 10.5 mm. Eyes in life yellowish green, without bands, bare. Frons narrow, index 4.5, parallel, with fawn tomentum; ocellar tubercle small, slightly raised, shiny, brown, with well-defined anterior ocellus. Callus small, dark brown, not bulging, tear-drop shaped, approximately one-half width of frons at base, with narrow delicate extension to mid frons. Subcallus smooth, with fawn tomentum. Antennal scape and pedicel fawn, with black hairs; flagellum orange-brown, basal plate narrow, with minute sub-basal dorsal projection. Palpi fawnish brown, with black hairs. Legs brown, with dark brown hairs, darkening on tarsi. Abdomen brown, with narrow greyish white apical bands on all tergites and greyish white median triangles on tergites 2–6. Abdominal venter grey, with narrow pale apical bands on sternites 2–6, 7th sternite dark brown. Wings faintly grey, costal cell not darkened, stigma brown, small, veins conspicuously dark brown, R 4 without appendix.