16 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Wing hyaline, uniformly clothed with microtrichia except at extreme 

 base, including basal part of anal cell; alula completely with micro- 

 trichia and with a long posterior fringe; veins forming discal cell 

 except at base weak; part of M separating basal cells weak, evanescent 

 at base; R2+3 weak, almost evanescent, at base, but arising well 

 beyond r-m, which is short, almost punctiform (fig. 15). Densely 

 punctate area of abdomen extending over basal half medially of fourth 

 tergum, the punctures becoming more spaced laterally and toward 

 fourth tergum; first sternum and extreme sides of second closely 

 punctate, as toward base of abdomen dorsally, abdomen otherwise 

 shining. Length 2.25 mm. 



Distribution.— Dominica, Lesser Antilles. 



Holotype. — 9, Clarke Hall, Aug. 9-15, light trap, T. J. Spilman, 

 type no. 69521, USNM. 



Dactylodeictes depressus, new species 



Figure 5 



Male. — Wholly black except antennae, legs, halteres and wings. 

 Head similar in profile to that of D. lopesi Lindner (1964, fig. f) but 

 not so high, about 1.7 as high as long (2.0 in D. lopesi) ocellar triangle 

 not prominent. Frons barely wider than ocellar triangle at same plane 

 and becoming narrower below, at narrowest about 0.13 head width; 

 a prominent rounded pit between callus and antennal bases; callus 

 small, polished, a narrow polished area extending from it to anterior 

 ocellus; sides of frons above callus, frons below callus except frontal 

 pit, and face with dense white tomentum. Occipital orbits narrowly 

 developed below, densely white tomentose. Antennae yellow, flagel- 

 lum and arista reddish yellow, flagellum on inner surface with a 

 conspicuous, polished, brownish-black, crescentic spot. Proboscis 

 brownish black. 



Mesonotum and basal half of scutellum with fine, pale yellow ap- 

 pressed hairs; a pah* of triangles extending on each side of median 

 line almost to suture and leaving a narrow mid-dorsal presutural vitta, 

 also a pair of rounded postsutural spots in line with these triangles, 

 black haired; sides of mesonotum before suture with conspicuous, 

 larger yellowish hairs arranged in irregular longitudinal rows, the 

 integument in these areas more conspicuously shining than elsewhere 

 on the mesonotum. Scutellum elevated at an angle of 45° with meso- 

 notum, margined, microdenticulate on apical half, terminating in a 

 bluntly rounded digitate process that is slightly longer than wide 

 and that extends in a plane with the scutellum; apical half of scutellum 

 with black hairs. Pleura yellow haired. Legs yellow; each femur with 

 a preapical brownish band and fore tibiae more or less brownish. 

 Wing hyaline; veins brown; stigma yellow. R 8 vesitgial basally; 



