108 INSECUTOR INSCITI^ MENSTRUUS 



subspherical, with a cup-shaped apical excavation, with whitish 

 pruinosity. Clypeus rounded, brownish, pruinose. Eyes sep- 

 arated at vertex, black. Occiput clothed with flat dark scales 

 with dull bluish reflection, a patch of yellowish white scales 

 on vertex and well behind. White scales on underside of the 

 head. Two setae at vertex, projecting between the eyes, and 

 smaller hairs on margins. 



Prothoracic lobes well separated, clothed with appressed dark 

 scales and yellow ones below. A row of coarse bristles on front 

 margin. Mesonotum densely clothed with appressed scales, 

 dark with a yellowish and bluish reflection on disk, white 

 scales on front margin. Over roots of wings and on antescu- 

 tellar space golden scales. Over roots of wings golden brown 

 bristles. Scutellum trilobate, clothed with flat dark scales, 

 with coppery bluish luster, each lobe with a few long bristles. 

 Postnotum elliptical with flat white scales and a group of 

 setse near posterior margin. Pleurae and coxae with patches of 

 appressed silvery white scales. 



Abdomen compressed, truncate apically ; dorsal vestiture of 

 bronzy black flat scales, venter with yellowish white scales, 

 some of these scales raised. Colors separated in a straight line. 

 First segment with many long outstanding golden hairs ; short 

 hairs intermixed with the scales dorsally on all the segments 

 and projecting from the apices. Ventrally also hairs present 

 between the scales, especially on the four last segments. 



Wings longer than abdomen, hyaline, petiole of second 

 marginal cell more than one-third of the length of its cell, that 

 of second posterior cell about two-thirds of its cell. Out- 

 standing scales lanceolate, narrower near the base, a few 

 present with blunt tips. Basal cross-vein less than its own 

 length from anterior cross-vein. Halteres pale with dark 

 knobs. 



Legs, brown, lighter on underside, femora brassy beneath ; 

 front and mid legs without contrasting colors. Hind legs with 

 fourth and fifth joints silvery on one side, this color inter- 

 rupted on the base of the fifth joint. 



Claw formula: 0.0-0.0-0.0. 



