URANOT-ENIA LOWn 913 



scales densest over the three median and submedian integumental stripes, the 

 median one extending to the antescutellar bare space, the submedian ones con- 

 tinuing on each side of it to hind margin; a short, broad line of bluish-silvery 

 scales on lateral margins before roots of wings; bristles coarse and long, dark 

 brown. Scutellum with the median lobe large and broadly rounded, lateral 

 angles acute ; a large patch of broad truncate dusky-brown outstanding scales at 

 the middle and smaller similar patches at lateral angles ; each lobe with few long, 

 coarse, brown setae. Pleurae yellow-brown with a large median dark brown spot 

 bearing a transverse patch of broad, flat bluish-silvery scales ; coxae luteous, with 

 basal patches of bluish-silvery scales. 



Abdomen short, subcylindrical, tip broadly truncate; dorsal vestiture of 

 black scales; sides of third, fifth and sixth segments with very large, tri- 

 angular bluish-silvery patches, their bases resting on posterior borders of seg- 

 ments ; posterior margins of segments with dark brovm bristles which are most 

 abundant on last segment ; venter entirely silvery-white scaled. 



Wings moderate, hyaline; second vein very closely approximated to first, 

 second marginal cell very short, about one-fourth the length of its petiole; 

 second posterior cell larger but much less than its petiole in length; basal 

 cross-vein long, about its own length from the short anterior cross-vein ; scales 

 of the veins brown, small ; scaling in general slight, rather dense on costa and 

 first vein ; a few large, long and narrowly lanceolate outstanding scales on lower 

 branch of second, on third vein and on upper branch of fourth vein, ^fourth 

 vein with a short stripe of broad silvery-blue scales at its base, continued by a 

 short stripe of similar scales on fifth vein in its basal fourth; fringe broad. 

 Halteres with pale stem, the knobs pale brownish. 



Legs rather long and slender; vestiture blackish-brown, with a slight bluish 

 iridescence; femora pale beneath at base; knees, except the fore pair white; 

 apices of tibiae touched with white ; hind tarsi with last two joints and apical 

 half of second joint white; tips of middle tarsi with a pale brownish luster. 

 Claw formula, 0.0-0.0-0.0. 



Length : Body about 2 mm. ; vring 3.1 mm. 



Male. — Proboscis longer, more slender and less swollen at apex than in the 

 female, with rather coarse outstanding setae. Palpi very short, slender. An- 

 tennae long, filiform, the joints subequal, but little shorter than in the female, 

 the last two joints lengthened; hairs of whorls sparse, but longer than in the 

 female; ciliation coarse. Coloration as in the female. Abdomen short, sub- 

 cylindrical, somewhat thickened at apex. Wings slightly narrower, the fork- 

 cells shorter than in the female; vestiture less abundant. Claw formula, 

 0.0-0.0-0.0 ; one claw of the mid legs very large, the other very small. 



Length : Body about 2 mm. ; wing 2 mm. 



Genitalia (plate 37, fig. 348) : Side-pieces about tAvice as long as broad, 

 conically tapered; a low, strongly hairy lobe on inner side near base. Clasp- 

 filament short, very stout, thickened outwardly, rounded at tip, with about fifteen 

 terminal spines, arranged in a patch at tip and within it. False harpes short, 

 slender, rounded at tip and curved outward. False harpagones divided into two 

 portions, a stout rounded outer triangle and two small spines within. TJnci 

 forming a broad membranous plate with quadrate apical emargination. 



Larva, Stage IV. — Head elongate, elliptical, widest through eyes, front pro- 

 tuberant, broadly rounded, shallowly emarginate at middle between a pair of 

 stout projecting spines; both pairs of dorsal head-hairs single and thickened, 

 finely spinose; ante-antennal tufts multiple. Antennae small, stout, thickened 

 at base, with a single hair below middle and a few small spicules; terminal 

 spines large and stout. Air-tube subcylindrical, scarcely tapered, about five 

 times as long as wide ; pecten reaching nearly to middle, of twelve evenly spaced 



