N0 - 3622 STRATIOMYIDAE — JAMES 9 



0.20 head width, parallel sided to frontal callus, then widening; 

 median area 0.14-0.16 width of frons, longitudinally with irregular 

 striatums and in certain lights with greenish reflections; latcnirarea 

 punctate, each puncture bearing a fine yellow hair; face and frons 

 below callus with fine yellow hairs but without evident punctures; 

 pile of occipital triangle mostly black. Proboscis pale yellow to whitish 

 with concolorous hairs. Antenna orange yellow; scape and pedicel 

 black haired, scape about twice as long as wide; arista subapical, 

 the apex of the flagellum convex below it; arista dark brown to black, 

 thickened and with a few black hairs at base. 



Thorax mainly yellow, tending to reddish yellow dorsally; a large shining 

 black quadrate spot on mesopleuron adjacent to notopleural suture; 

 mesonotum with the median two-fifths, behind the suture, metallic 

 green to violaceous, this color extending over the scutellum and pro- 

 duced onto the presutural area of the mesonotum in the form of a 

 narrow median and a pair of dorsocentral stripes, the three becoming 

 more attenuated and sometimes vanishing anteriorly; the extent of 

 the metallic area shows considerable variation, in the extreme instance 

 taking in a considerable part of the median presutural area as well as 

 all of the scutellum and postscutellum. Pile of pleura j^ellow; that of 

 mesonotum short, black, with a longer, yellowish pile intermixed, 

 consequently the color apparently changing with the light incidence. 



Legs predominantly pale yellow; middle tibia broadly blackish at 

 base; hind tibia blackish but with the median half pale yellow to 

 whitish. Wing almost hyaline, slightly smoky; discal cell rather short 

 and blunt, in the holotype 0.63 as wide as long and r-m 0.43 as long as 

 width of discal cell; R2+3 arising slightly beyond r-m, bending toward 

 Ri and running parallel with and close to it to union with cost a; alula 

 slender, generally parallel sided, about eight times as long as wide, 

 bare of microtrichia; 15 to 20 hairs on bulbous base of second anal 

 vein but third anal with only pubescence. Halteres yellow. 



Abdomen elongate-oval, broadest at apex of fourth segment; 

 basically yellow but with a clear-cut, subquadrate black spot with a 

 distinct violaceous reflection on each side of each of the first four terga; 

 these spots broadly reach the lateral margins but are broadly separated 

 from the abdominal incisures; distance between the two on any one 

 tergum variable but approximately equal to transverse length of spot; 

 fifth tergum with a similar pair of spots but reaching posterior margin 

 and broadly confluent there; first sternum with a black quadrate spot 

 adjacent to each tergal spot of the same segment; sixth segment wholly 

 black, dorsally and ventrally. Pile black dorsally, mostly appressed 

 but becoming semi-erect laterally at incisures, yellow ventrally, 

 mostly appressed. Genitalia (fig. 3) yellow; distist}^i broad and some- 

 what leaflike; aedeagus simple, without evident guards; a pair of 



258-938 — 67 2 



