THE CANADIAN ENTOMOLOGIST. 71 



NEW NORTH AMERICAN TRYPETID^. 



BY D. W. COQUILLETT, WASHINGTON, D. C. 



Trypeta (Acidia) tortile, ii. sp.,?. Wholly yellow except a black 

 dot above each vving ; ovipositor brown; bristles black; scutellum 

 bearing four bristles ; thorax and abdomen shining; ovipositor flat, veiy 

 broad, nearly as long as the last two abdominal segments. Wings hya- 

 line, the anal cell, bases of marginal, sub-marginal, and of the first basal 

 cell, also the apex of the second basal cell, yellow ; a black spot on furca- 

 tion of the second and third veins, and one on lower half of vein at apex 

 of anal cell ; a brown band commences on costa between apices of 

 auxiliary and of first vein, and extends to the discal cell, going over the 

 small cross-vein and continuing as a yellowish streak into the discal cell ; 

 a second brown band commences on the costa between apices of the first 

 and second veins, and crosses the wing, passing over the posterior cross- 

 vein, and near its terminus sending a spur into the third posterior cell ; 

 apex of wing from slightly beforeapex of the second vein to beyond tip 

 of fourth vein, brown ; first and third veins bristly. Length, 5 mm. 

 Washington (O. B. Johnson). A single specimen. 



The colouring of the wings somewhat resembles Figure 9, Plate X., of 

 Loew's " Monographs," Part III., but the fifth vein is not bordered with 

 brown ; the brown at the apex of the wing is separated at the costa from 

 the preceding cross-band ; the band crossing the discal cell is scarcely 

 perceptible, etc. 



Trypeta (Rhagoletis) /ormosa, n. sp., ^ $ . Black, the head and its 

 appendages (except the ocellar tubercle and occiput), a line reaching 

 from humeri to each wing, scutellum except the sides at base, halteres 

 and legs, yellowish ; thorax and scutellum sub-opaque, the abdomen shin- 

 ing ; proboscis slender, geniculate, the apical half bent downward ; sides 

 of front and scutellum each bearing four bristles ; ovipositor compressed, 

 slightly exceeding the last four abdominal segments in length ; wings 

 hyaline, marked with three cross-bands and two spots of brown, extreme 

 base of wing smoky ; the first cross-band begins at first vein and extends 

 over veins at bases of discal and third posterior cells, stopping near mid- 

 dle of axillary cell where it is much widened ; the second band begins on 

 costa between apices of auxiliary and first veins and extends over small 

 cross-vein, and through the discal and third posterior cells to the wing 

 margin, its greatest width occurring at the fifth vein ; a brown costal spot 

 between apices of first and second veins, extending across marginal and 



