. Diptera Brachycera. Brachycera. 118 B. imJcliifrons 5, these speciraeus Mould certainly be regarded as males of the latter if regard were not paid to the differences enumerated ; Galle, Ceylon, 27. iv. 1892, type S; Kandy, 30. v. 1892 (both Col. Yerhury). Type and second specimen in British Museum. 93. Baccha nigricosta, Brun. Baccha nigricosta, Brunetti, Rec. Ind. Mas. ii, p. 50 (1908) ; i, pi. xi, fig. 5, wing (1907). S. Head with front above and below antennae grey-dusted; eyes quite contiguous nearly to the vertex, which is very small and shining black; below antenn
. Diptera Brachycera. Brachycera. 118 B. imJcliifrons 5, these speciraeus Mould certainly be regarded as males of the latter if regard were not paid to the differences enumerated ; Galle, Ceylon, 27. iv. 1892, type S; Kandy, 30. v. 1892 (both Col. Yerhury). Type and second specimen in British Museum. 93. Baccha nigricosta, Brun. Baccha nigricosta, Brunetti, Rec. Ind. Mas. ii, p. 50 (1908) ; i, pi. xi, fig. 5, wing (1907). S. Head with front above and below antennae grey-dusted; eyes quite contiguous nearly to the vertex, which is very small and shining black; below antennae a wide shining black stripe; frontal triangle above antenuse shining black seen from the front. Antennae reddish-brown, the two basal joints black. Proboscis black, tip red. Thorax shining black, minutely pubescent, un- marked, sides blackish-grey; scutelhim 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, tlieiice sharply widening; general colour of abdomen black, moderately shining, with rather long blackish-grey hairs at sides of 2nd and 3rd segments, a pair of. Fig. 21.— Baccha nigricosta, Brun., wing. small transverse spots at middle of sides of 3rd segment, and a pair of sub-lunate ones lying across front corners of 4tli segment, all orange and rather indistinct. Le(is pale tawny, hind femora and tibiae with a dark band towards the tip, hind tarsi blackish. W^ngs pale blackish ; nearly clear at base; stigma black, much elongated; a blackish cloud immediately below it, and a small blackish spot at extreme tip of costa. Length, 10 mm. Described from one 6 taken by Dr. Annandale (19-22. ix. 1906) at Bhim Tal, Ivumaon; in the Indian Museum collection. A second specimen from Pusa, 16, xii. 1915. The species can hardly be confused with any other, the con- spicuous blackish cloud in the middle of the wing differentiating it from
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
