. Fig. 13. Wing of N. nigrinus. and tarsi whitish, hind tibiae black in the middle, anterior tibiae more or less darkened, and the tarsi distinctly darkened towards the ends. Wings hyaline with white veins, stigma yellowish, cubital vein not forked. Halteres white, the peduncle slightly darkened. Female. Front broad, snout rather long, pointed, no spots above the antenna?. Eyes roundish, higher than long, coloured as in the male, but the band situated in the middle. All the rest as in the male. Length 3,8—4,5 mm. This species is at once recognised by the shape of its snout with its high insert
. Fig. 13. Wing of N. nigrinus. and tarsi whitish, hind tibiae black in the middle, anterior tibiae more or less darkened, and the tarsi distinctly darkened towards the ends. Wings hyaline with white veins, stigma yellowish, cubital vein not forked. Halteres white, the peduncle slightly darkened. Female. Front broad, snout rather long, pointed, no spots above the antenna?. Eyes roundish, higher than long, coloured as in the male, but the band situated in the middle. All the rest as in the male. Length 3,8—4,5 mm. This species is at once recognised by the shape of its snout with its high inserted antennas, and the absence of white spots, by its to- tally black colour and especially by the unforked cubital vein.
Size: 3566px × 1402px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
