AKT. 17. XOETH AMERICAN PHOROCERA ALDRICH AND WEBBER. 81 



PHOROCERA STERNALIS Coquillett. 



Phorocera stcrnalis Coquillett, Proc. U. S. Nat. Mus., vol. 25, 1902, p. 112. 

 PhyUophorocera sternalis Townsend, Proc. U. S. Nat. Mus., vol. 49, 1916, 

 p. 621. 



Front of male 0.320 and in the female 0..326-0.3G1 of the head width, 

 sides gray pruinose clothed with bristly hairs outside the frontal 

 row ; face gray pruinose the ridges bristly on their basal three- fourths, 

 bucca one-fifth or less the eye height clothed with long black hairs 

 in the male, less so in the female ; antennae as long as the face ; third 

 joint in male broad, convex in front, six times the second; in the 

 female plain, three times the second; arista thickened nearly to the 

 middle, the penultimate joint about as long as broad, in some speci- 

 mens slightly elongate. Thorax gray pollinose, marked with four 

 black vittae, four dorsocentral macrochaetae, scutellum black at base, 

 the apex broadly yellow, bearing three long and one short apical 

 pair of marginal bristles. Sternopleura with four bristles. Abdo- 

 men black, shiny, the basal portions of the second, third, and fourth 

 segments gray pollinose ; all of the segments with marginal and the 

 last three with discal macrochaetae. Legs black; mid tibiae bear- 

 ing two or more bristles on the outer front side near the middle; 

 hind tibiae coarsely subciliate at most (there is no even fringe of 

 bristles). AVings hj^aline, the apical cell open, third vein with two 

 bristles at base. 



Length 7 to 8 mm. 



Redescribed from the type male from Franconia, N. H. (Mrs. 

 Slosson) ; one female from East Eddington, Maine (Hough) ; and 

 one female from Moscow, Idaho (Aldrich). 



7V/>^.— Male, Cat. No. 6214, U.S.N.M. 



PHOROCERA INCRASSATA Smith. 



Plwrocera incrassaius Smith, Proc. Ent. Soc. Wash., vol. 14, 1912. p. 121. 

 Front in female 0.312 of the head width, head nearly one and one- 

 half times as broad as long, parafrontals and parafacials yellowish 

 gray pollinose, facial ridges bristly a little over half way; sides of 

 face below the frontals bare; bucca one-fifth the eye height; palpi 

 yellow; antennae not quite as long as the face, the third joint four 

 times the second, arista thickened on the basal three-sevenths. 

 Thorax black, lightly gray pollinose with a yellowish tinge, marked 

 with four black vittae; four dorsocentral macrochaetae: scutellum 

 black, slightly yellow at tip, with three pairs of long jnarginal 

 bristles besides the shorter apical pair. Sternopleura with three 

 bristles. Abdomen black, the base of segments gray pollinose, abdom- 

 inal hairs depressed, first segment with a pair of marginal macro- 

 chaetae, second with two pairs of discal and one pair median mar- 

 ginal, third with two pairs discal and a marginal row, the fourth 

 Avith macrochaetae on the apical two-thirds. Legs brownish black, 



