C. achrayi (Kettle & Lawson 1955)

Taxonomy	Biology	Distribution

Culicoides achrayi Kettle & Lawson 1955: 37. TL Great Britain
(Kettle & Lawson 1955: 37. ♂, ♀, figs, larva, pupa)
(Campbell & Pelham-Clinton 1960: 247. ♂, ♀, notes, keys, figs)
(Kremer 1966: 117. ♂, ♀, notes, figs)
(Havelka 1976: 219. Notes)
(Glukhova 1979: 199. Larva)
(Delecolle 1985: 95. ♂, ♀, notes, figs)
(Boorman 1986: 259. Notes)
(Glukhova 1989: 217. ♂, ♀, notes, figs, larva)

Diagnosis and Notes

A medium-sized species with greyish wings ornamented with only two pale spots, one over the cross-vein and reaching the costa, the other just beyond the second radial cell. The female AR is 1.11-1.20; the SD 3,11-15. The female is very similar to that of C. pallidicornis; but the males may be separated by the shape of the posterior margin of the ninth tergite, with short, broad apicolateral processes and a very shallow central notch, the membrane spiculate.  Campbell & Pelham-Clinton (1960) give a scatter diagram of antennal length against antennal ratio for separating females of this species and pallidicornis, fascipennis and subfasciipennis; but this analysis has not been performed on other species of the subgenus which are all very similar in appearance. The figures are from Glukhova (1989).