AEDES ABSERRATUS 753 



Prothoracic lobes elliptical, remote dorsally, black, clothed with narrow 

 golden-brown scales and dark bristles. Mesonotum black, evenly clothed with 

 narrow, curved scales, bright bronzy brown, an indistinct, slightly darker 

 median stripe of smaller scales, scales over antescutellar space yellowish white. 

 Scutellum trilobate, black, clothed with narrow, curved, yellowish-white scales, 

 each lobe with a group of pale bristles. Postnotum elliptical, prominent, black- 

 ish, nude. Pleurae brown, coxse luteous, with rows of pale bristles ; clothed with 

 patches of elliptical flat white scales, the prothoracic epimera with narrow 

 curved bronzy brown scales like those on mesonotum. 



Abdomen subcylindrical, tapering posteriorly; dorsal vestiture black, with 

 moderate, white, basal segmental bands, broader posteriorly, which widen to tri- 

 angular patches on the sides; first segment with white scales and numerous 

 fine pale hairs ; venter whitish scaled, the last two or three segments with black, 

 apical lateral patches. Cerci black. 



Wings moderate, hyaline ; petiole of second marginal cell shorter than its cell, 

 that of second posterior cell about the same length as its cell ; basal cross-vein 

 distant about its own length from anterior cross-vein ; scales dull brown, the 

 outstanding ones broadly linear. Halteres whitish, knobs dark. 



Legs moderate ; femora yellowish-white scaled below with black ones above 

 and a black ring before tip ; knees white ; tibiae largely pale scaled below, black 

 above, tips black; tarsi black scaled, the basal joint with many pale scales 

 beneath becoming fewer outwardly, terminal joints entirely black. Claw for- 

 mula, 1.1-1.1-1.1. 



Length : Body about 4.5 mm. ; wing 4 mm. 



Male. Proboscis long and slender, straight, black scaled. Palpi nearly as 

 long as proboscis, blunt at tip ; end of long joint and last two joints somewhat 

 swollen ; vestiture black ; hairs on the end of long joint and on last two joints 

 long, dense, black with a yellowish reflection in certain lights. Antennae plu- 

 mose, the last two joints long and slender, pilose, the others short, blackish; 

 hairs of whorls long, dense, brownish black with yellow luster. Coloration 

 similar to the female. Wings narrower than in the female, stems of the fork- 

 cells longer, vestiture less abundant. Abdomen elongate, depressed, with dense, 

 long and pale lateral ciliation ; dorsal white segmental bands broader and more 

 expanded laterally than in the female, last segment entirely white-scaled. Claw 

 formula, 1.1-1.1-1.1. 



Length : Body about 5 mm. ; wing 4 mm. 



Genitalia (plate 29, fig. 195) : Side-pieces more than twice as long as wide; 

 apical lobe well developed, prominent, continued narrowly along side-piece to 

 basal lobe, which is slightly squarely prominent and bears numerous setae with 

 tubercular bases and a stout hooked spine with an attendant group of smaller 

 spines. Clasp-filament slender, moderate, slightly expanded in middle, notched 

 towards apex, and bearing a few fine seta, a long articulated terminal spine. 

 Harpagones with a moderate, slender, columnar base bearing a rather short, 

 articulated, medianly widened, terminal filament. Harpes elliptical, concave, 

 curved, inner margin thickened and revolute, tip pointed and curved outward. 

 Unci approximate, revolute, forming a small basal cylinder. Basal appendages 

 approximate, bearing four or five stout terminal setae. 



Larva, Stage IV (plate 124, fig. 431). Head rounded, narrowed before eyes, 

 a slight notch at insertion of antennae, front margin arcuate. Antennae cylin- 

 drical, curved, spined all over; tuft moderate, before middle; four terminal 

 spines of various lengths, two shortly subapical, a short thick digit. Eyes trans- 

 verse, pointed. Dorsal head-hairs single, ante-antennal tufts in threes or fours. 

 Mental plate shortly triangular; apical tooth broad, roundedly incised as if 

 formed of three fused teeth, eleven side-teeth becoming larger basally, the last 

 one small and remote. Mandible quadrangular, with small spines near base; 



