DixA. "263 



character, although distinctly present in all five Oriental species 

 treated of here, and apparently common to both sexes, has not, so 

 far as I am aware, been described as generic. 



In the European species, D. macidata, the thorax is described 

 as pale yellow, and there are stripes on the sides of the thorax, 

 the base of the wing is yellowish, and lesser differences also are 

 apparent between Meigen's species and the present one, which 

 may be regarded as distinct. 



189. Dixa maculipennis, Bnm. 



Dixa maculipennis, ]3rimetti, Rec. lud. Mus. iv, p. 266 (1911). 



S $ . Head : back of head, vertex, and frons light grey. Pro- 

 boscis yellowish, distinctly dark brown at base ; palpi dark brown. 

 AnteniiEe with two very distinct basal (scapal) ioints, the 1st 

 circular, very short, the 2nd subglobular, both oi'ange-yellow ; 

 flagellum of at least fourteen joints, possibly one or two more, as 

 they are not at all easily counted. Thorax rather bright yellowish. 

 Three dark brown thoracic stripes as in the previous species ; and 

 on each shoulder a distinct but not sharply defined brownish 

 curved transverse streak, connecting the tip of the median stripe 

 with the tip of the outer stripe. Prothorax forming a sort of 

 imperfect collar, swollen on each side into an elongate lobe, lying 

 close to the thorax. Scutellum dark brown, with a broad yellow 

 median indistinct stripe ; metanotum dark brown. A small brown 

 scutellar bridge with a narrow yellow upper margin joins the scu- 

 tellum on each side to the wing-base. Abdomen brownish, a small 

 blackish mark towards each side on the posterior margins, the 

 segments becoming blackish towards the tip of the abdomen. 

 Genitalia of male black ; a pair of large, conical, fleshy claspers, 

 the 1st joint of which is yellowish ; the 2nd joint is also conical, 

 smaller, apparently pointed at the tip. (The claspers are closed, 

 so that the tips "are not clearly visible.) Ovipositor blackish. 

 Legs pale yellowish ; tips of femora and tibiae, and the tarsi 

 towards the tips, narrowly black ; hind tibice shghtly but distinctly 

 iucrassated at tips. ^Yin(|s pale grey, costal cell umnarked, the 

 brown spots beginning on the 1st longitudinal vein. J^our distinct 

 brown spots in a row, with fairly clearly cut sides, are placed in 

 juxtaposition to this vein : — the first small, rounded, near the base ; 

 the second larger, squarish, below the tip of the auxiliary vein, both 

 these two spots limited posteriorly by the 4th vein ; the third spot 

 is a streak, beginning beyond the origin of the 2nd vein, and 

 ending on the 4th vein, before the anterior cross-vein ; the fourth 

 spot is over the fork of the 2nd vein. Much hghter pale brownish- 

 grey small spots are placed, possibly irregularly, over the rest of 

 the wing. In the single specimen present they are situated as 

 follows : — two in the 2nd basal cell, two in the anal cell, one in 

 the axillary cell ; one each in the marginal, submarginal, and the 

 1st posterior cells, all united more or less into a streak, placed 



