HELEOMYZID FLIES NORTH OF MEXICO—GILL dll 
Stebteropleurapualnediow se iiela ee on ease elect ae weyeeeee ie Scoliocentra (p. 571) 
IECOLOD I OMNA ATOM sn sie vince ces ye ot labs) eet eS o Pee WRI een CEB ergs rts 19 
19. Fronto-orbital bristles equalinlength ....... Anypotacta (p. 574) 
Anterior fronto-orbital bristle shorter than posterior bristle. 
Amoebaleria (p. 576) 
20. Scutellum bare on dorsum; pteropleura bare (except in H. difficilis, new 
BPCCICS eG wera 0. 2. sa cs alten cde mehr eMLe webio ws Heleomyza (p. 588) 
Scutellum and pteropleura haired ........ Trichochlamys (p. 595) 
Genus Borboropsis Czerny 
Borboropsis Czerny, 1902, p. 256; 1924, p. 67; 1927a, p. 21. 
Certain typical heleomyzid characters are not developed in the 
genus. The costal spines and the dorsal preapical bristles of the 
tibiae are either absent or very obscure. Otherwise, the flies are 
clearly members of the Heleomyzinae. 
The genus contains a single described species. 
Borboropsis fulviceps (Strobl) 
Figure 14 
Anthomyza fulviceps Strobl, 1898, p. 269. 
Borboropsis fulviceps (Strobl), Czerny, 1924, p. 67; 1927a, p. 22. 
The following description is based primarily on specimens in the 
U.S. National Museum, but is in agreement with the description 
given by Czerny (1924, p. 67). | 
Mare.—Anterior half of front reddish yellow, becoming blackish 
posteriorly; fronto-orbital plates and ocellar triangle with a grayish 
pollinosity; fronto-orbital bristles about equal, with 1 or 2 setae 
between the bristles; back of head black, lower face and cheeks dirty 
yellow; basal segments of antennae reddish, third segment black, 
aristae minutely pubescent; oral vibrissae strong; eyes round; cheek- 
eye ratio from 0.55 to 0.60; palpi reddish yellow, remainder of pro- 
boscis blackish brown. 
Thorax black with faint grayish pollinosity; dorsocentrals 2+3 
(Czerny, 1924), but only the 2 hindmost clearly longer than the 
ground hairs; a pair of prescutellar bristles; scutellum bare, except for 2 
pairs of lateral bristles; propleural bristle present; mesopleuron with 
a single bristle and 2 to 5 setae near the bristle; sternopleuron with a 
single bristle in upper hind area, scattered setae extending down to the 
longer hairs between the coxae; remainder of pleura bare. 
Legs reddish yellow, tarsi not darkened distally; tibia with dorsal 
preapical bristles absent (Czerny, 1924, said an obscure preapical 
bristle may occur on the hind tibia); middle tibia with several ventral 
apical spines. 
Wings hyaline, costal spines absent or obscure. 
626053622 
