GENUS STEGOMVIA 



375 



Habitat. — Is one of the commonest Indian S.W. monsoon gnats, 

 commoner than any other Stegomyia in the N.W.P. Has also been 

 taken in Amboina, Siam and China. 



6. STEGOMYIA SUGENS (Wied.) 



= C. vittatiis, Bigot. 



Auss. Zweifliig. Insec. p. 545 (1828), Wied. ; Ann. See. Ent. d. Pr. S. 4, t. 1 

 (1861), Bigot {== vittatm); Bull. See. Ent. Ital. p. 257 (1886), Ficalbi 

 (= vittatus). 



Veins of wings with long narrow brown scales. Hind tarsi 

 with the last joint pure white and three white basal rings ; fore 

 and mid tarsi each with three basal white bands. Thorax with 

 red-brown scales and two white spots on each side of the meso- 

 notum. Abdominal segments black with white basal bands and 

 lateral spots and a median spot on the last. Proboscis black, 

 unhanded, but with sometimes a few white scales in the middle. 



Head black, with orbits, and median and lateral occipital patches 

 white ; some of the hinder forked scales are white. Antennae banded,, 

 with a patch of white scales on scaphus ; clypeus nearly black with 

 two white spots, palpi black with, in the ? , the last joint white ;. 

 those of ^ black, much longer than the proboscis, with four equidistant 

 white bands, but black at the tip. Thorax of $ with four grey longi- 

 tudinal lines in addition to the four white spots ; scutellum with four 

 silvery spots ; pleurae dark with only a few white dots. Legs black 

 with the bases of the hind femora palhd, with white knees and subapical 

 garters on the femora as well as on all the tibiae at the junction of the 

 upper and middle thirds. Venter black with basal white bands. Halteres 

 pale with dark knobs. Tarsal claws of ? equal, those of fore and mid 

 legs with an extra tooth to both claws. Those of hind simple ; of the 3 

 markedly unequal, both claws with an extra tooth on the fore and mid 

 pairs, small and simple on the hind legs. Length. — 4-3 mm. 



Habitat. — Freetown, Sierra Leone, September, October. Mashona- 

 land, Corsica, Nubia. 



7. STEGOMYIA NIGERIA, Theobald (Monog. I, p. 303). 



Wing veins with long, brown scales, reddish at the base. Last 

 hind tarsal joints white and all but the apex of the next, and 

 with basal white bands on the other three ; fore and mid tarsi all 

 black, but for a couple of basal spots (not bands) on the mid legs. 

 Thorax with a thick covering of nearly black scales, with twO' 

 narrow rows of white scales across it in front and a patch of the 

 same on either side, rarely visible from above. Abdomen with 



