NO. 1935. MUSCOID FLIES FROM SOUTH AMERICA— T0WN8END. 303 



FamUy EXORISTID^. 



Siabfkmily EXOrtlSTIN^. 

 EUPHOROCERA PERUVIANA, new species. 



Tricholyga, sp. Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, pp. 131 and {Ihi- 



phorocera) 328.— TD 3971. 

 Euphorocera peruviana Townsend, Proc. Ent. Soc. Wash., vol. 13, 1911, p. 153. 



[nomen nudum]. 



Length of body of female, 10 to 11 mm.; of wing, 8 to 9 mm. 

 Length of body of male, 14 to 15 mm.; of wing, about 10 mm. 

 Numerous specimens of both sexes, Piura, Peru, October 28 and 

 through November, 1910, on trunks of mesquite. 



Facial plate and parafacials silvery-white poUinose, parafrontals 

 pale golden pollinose. Antennae blackish, first two joints and palpi 

 reddish-yellow. Thorax, scutellum, and abdomen thickly cinereous 

 pollinose, the mesoscutum with the usual five vittae, the scutellum 

 with the reddish ground color showing through the pollen. Female 

 with first abdominal segment and indefinite hind borders of others 

 black and less thickly pollinose. The abdomen of male is broadly 

 reddish on sides of first to third segments. The anal segment in both 

 sexes is the most thickly poUinose. First and second segments with 

 a median marginal pair of short macrochsetse in both sexes, third 

 segment with a marginal row of stronger ones. Wings clear, the basal 

 costal area faintly straw-yellowish. 



Type.— Cat. No. 15141, U.S.N.M. Female, October 28, 1910; TD 

 3971,/. r. s. 



Deposits flat-oval macrotype eggs on host, without incubation. 



EUPHOROCERA MINOR, new species. 



Euphorocera minor Townsend, Proc. Ent. Soc. Wash., vol. 13, 1911, p. 153. 

 [nomen nudum] . 



Length of body, 7 mm.; of wing, 5 mm. Several females, Chap- 

 aira and Piura, in valley of Rio Piura, Peru, January 4 to May 21, 

 1911, on mesquite trunks and vegetation. 



Differs from E. peruviana in its uniform small size and in the greater 

 contrast of the black and pollinose portions of the body. The wing- 

 bases lack the yellowish shade almost entirely. 



Type.— Cat. No. 15142, U.S.N.M. Female, Chapaira, May 21, 

 1911; TD4058,/. r. s. 



Deposits flat-oval macrotype eggs on host, without incubation. 



PLAGIOPS, new genus. 



Plagiops comes near PlagiprospTierysa, D enter ammohia (type, Am^ 

 mohia glahriventris Wulp), and Stomatomyia, on external adult char- 

 acters, ru nnin g there in Brauer and Bergenstamm's tables. It may 



