Allobaccha nigricosta [Baccha](Brunetti, 1907b)
(PL xi, fig. 5.) ♂ Lower Himalayas (Bhim Tal, 4,500 feet). Long. 10 mm.
Head: Front above and below antennae grey dusted.
Eyes quite contiguous nearly to the vertex, which is very small and shining black. Below antenne a wide shining black stripe ; frontal triangle above antenne shining black seen from the front.
Antennae reddish brown, the two basal joints black.
Proboscis black, tip red.
Thorax shining black, minutely pubescent, unmarked, sides blackish grey ; scutellum rather large, shining black, with a few pale hairs.
Abdomen : 1st segment broadly semi-circular, of exactly the same shape and size as scutellum, 2nd very pedicillate, 3rd narrow at base, thence sharply widening; general colour of abdomen black, moderately shining, with rather long blackish grey hairs at sides of 2nd and 3rd segments, and faint traces of a pair of spots at the middle of the sides of 3rd segment, and towards the base (at the sides) of 4th segment.
Legs pale tawny, hind femora and tibie with a dark band towards the tip, hind tarsi blackish.
Wings blackish, nearly clear at base. Stigma black, much elongated and a blackish cloud immediately below it, and a small blackish spot at extreme tip of costa.
Described from one ♂ taken by Dr. Annandale (19-22-ix-1900) at Bhim Ta', Kumaon, now in the Indian Museum collection.
Body length: 10 mm.
unless otherwise stated