60 



standing scales linear to ligulate, very long, both black and pale. Halteres pale with 

 blackish white scaled knobs. 



Legs rather long, clothed with pale, ochraceous scales, the long outstanding seta 3 

 black; femora with some black scales on upper side, which predominate towards tip; 

 tibia; similarly coloured ; first tarsal joint clothed with ochraceous scales with black 

 ones intermixed which predominate at lips, the other joints black, with basal white 

 rings, the hind tarsi having the basal halves white, the rings narrower on the 

 other legs and nearly obsolete on the last joint of front legs. Claw formula 1.1 — 

 1.1 — 1.1. 



Length: Body 7,5 mm; wing 6 mm. 



Male: Proboscis slender, nearly straight. Palpi exceeding the proboscis by about 

 half the length of the last joint; vestiture of ochreous and blackish scales, the latter 

 very sparse, tending to form rings near the false articulation of the long joint and 

 at the apices of the other joints; apex of long joint and last two joints with long, 

 dense, golden and brownish hairs. Antenna' plumose, the last two joints long and 

 slender, rugose, pilose, black, the others short, black at the thickened insertions of 

 the hair-whorls; hairs long, dense, brown, shining. Coloration similar to the female. 

 Wings narrower than in the female, the stems of the fork-cells longer, the vestiture 

 sparse. Abdomen long, depressed; dorsal vestiture of sordid yellowish white scales, 

 with an ill-defined, narrow median stripe of black and golden brown scales; lateral 

 ciliation long, fine, and dense, pale yellowish. Claw formula 2.1 — 1.1 — 1.1. 



Length: Body 7 mm; wing about 6 mm. 



Genitalia : Side-pieces nearly three times as long as wide, the tips conically 

 rounded. Distal lobe large, prominent, conical with short set;e. Basal lobe a rather 

 large, but slightly elevated area, bearing numerous dense, short seta 1 with tubercu- 

 lar bases; a stout spine with hooked tip within the basal lobe, accompanied by 

 two slender hairs. Clasp-filament slender, attenuated above base, a long stout arti- 

 culated spine at apex, nearly one third as long as filament; three small seta- sub- 

 apically. Harpes elliptical, edges recurved and thickened, tips pointed and directed 

 outward. Harpagones with stout base, tapering outwardly, minutely hirsute, bearing 

 at its tip an articulated filament which widens, broadly lanceolate, with a short, 

 somewhat recurved branch on inner side near middle. Unci invisible. Basal appen- 

 dages small, rather approximate, bearing about six stout seta;. 



Larva: Head rounded, wider than long, restricted before the eyes and slightly 

 notched before the antenna?; front margin arcuate. Antenna' short, attenuated at 

 apex; finely spined, a fine serration along inner edge; the hair-tuft a little below 

 the middle, consisting of six hairs. Near the apex one long hair; three short ones 

 and a digit. Anteantennal tuft with from five to seven hairs; lower frontal tuft with 

 five, upper with two hairs, all hairs remarkably long. Eyes large. 



Skin of body very smooth. Thorax rounded, wider than long, angled at hair- 

 tufts. Hair formula of frontal border 132114411231; the median tuft with four hairs, 

 two of which are long and two short, the one often indistinct; at the base of the 



