6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



claws becoming brownish at tips. Squamae dark brown. Wing in- 

 fumated, more heavily so anteriorly than posteriorly; a broad longi- 

 tudinal subhyaline area taking up all of second basal cell except its 

 apex, the anterobasal part of the anal cell, and the bases of the fourth 

 to second posterior cells, this area being devoid of micro trichia ; the 

 infumation posterior to and apicad of this area apparently due wholly 

 to microtrichia and consequently not so intense as that anterior to it, 

 in which the membrane is also infumated. 



Abdomen short, slightly longer than wide (3.90 mm and 2.75 mm 

 respectively); black, narrow apices of terga 2 to 5 and of sterna 1, 2, 

 and 5, also narrow base of sternum 2, yellow, the bands tegumentary, 

 those on terga 2 to 4 broadly interrupted medially; pile of first tergum 

 and median part of second black, otherwise yellowish to brownish 

 yellow, scattered and semi-erect on sterna 1 and 2, otherwise appressed. 

 Ovipositor brown, terminal segment and cerci yellow. Length 7 mm. 



Holotype: 9, Barro Colorado Island, C.Z., Mar. 27, 1963, malaise 

 trap, C. W. and M. E. Rettenmeyer; in the collection of Kansas 

 State University. 



The specific name was suggested by the resemblance to a megachilid 

 bee of the genus Anthidwm. 



Hermetia nigricornis James and Wirth, new species 



Figure 4 



Male: Head black; vertex, a pair of spots on each side of the ocellar 

 triangle and usually confluent with the vertex, frontal callus, an 

 indefinite area at antennal bases, and sides of face yellow, these 

 areas usually more extensive tnan in the other species of this group. 

 Ante-ocellar tubercle moderately prominent, shining, without stria- 

 tions; area above frontal callus rugulose but at most with only poorly 

 defined carinulae; supra-antennal callus variable, usually small and 

 poorly defined. Pile of head whitish. First and second antennal 

 segments brown, the latter becoming brownish yellow, particularly 

 at its apex; flagellum black to blackish to its base. Thorax black, 

 humeri, postalar callus, and apical half of scuteLlum yellow; all 

 thoracic pile uniformly whitish; no presutural vitta. Femora black- 

 ish; tibiae and tarsi wholly yellow, apical half of each orange yellow 7 . 

 Wing entirely grayish, apex and posterior half somew r hat darker. 

 Halteres yellow. Abdomen uniformly black but with a tendency 

 to become reddish brow^n, particularly apically; second sternum with 

 a transverse basal and a much smaller transverse apical pale area, 

 these sometimes connected medially by a narrow vitta; pile of abdo- 

 men w T hitish dorsally and ventrally, some black pile, the exact amount 

 variable, at base of first tergum; tergal pile moderately dense. Geni- 



