ART. 17. NORTH AIVtEPvICA]Sr PHOROCERA ALDRICH AND WEBBER. 57 



PHOROCERA COMPLICATA, new species. 



Male. — Front 0.27 of the head width ; rather dark gray above, be- 

 comino- lighter anteriorly, the parafacial grayish white, the upper- 

 Jiiost two frontal bristles very strong and directed backward ; in front 

 of these a considerable break with only one small pair, the lowest 

 frontals just meet the large bristles which ascend the facial ridges. 

 Antennae long, the third joint a little wider than usual, four times 

 the second: the arista long and thin, a little thickened on the basal 

 third ; bucca one-sixth the eye height ; palpi yellow ; proboscis very 

 small. Thorax gray pollinose, the dor.^mm slightly stained in the 

 specimen so that the stripes, if present, are not visible; four dorso- 

 centrals; two sternopleurals; one small pteropleural ; the mesopleura 

 has along the hind edge uncommonly dense black hair, especially 

 above and there are four very stout bristles before the suture: the 

 sternopleurae before the middle coxae have only a few ordinary bris- 

 tles. Abdomen not elongate, black with some reddish reflections 

 along the sides; the basal. half or more of the last three segments 

 thinly gray pollinose, the pollen gradually fading out posteriorly: 

 first and second abdominal segments with one pair of medium mar- 

 ginals, the third segment with about a dozen marginals: the hind 

 segment on its apical half with numerous erect spines; the median 

 bristles of the second and third segments are subdepressed, but as is 

 often the case, a few near the median line on the second segment 

 are erect. Genital segments minute, brownish black, the inner forceps 

 united to form a very curious and unique organ; its basal part is in 

 the form of two large plates joining at an angle on the median line 

 like a roof and ending with a slight notch which is fringed with 

 dense upright yellowish hairs near the median line, changing to black 

 hairs of a simpler character which follow along the outer margin: 

 inside the end of the structure thus far described there is a concave, 

 shining, brown surface, fringed behind by the yellow hairs just men- 

 tioned ; at the front edge this surface is drawn out into a very minute, 

 slender, shining beak. The outer forceps are developed into shining 

 yellowish-red plates with long hairs at the front edge ; fifth sternite 

 deeply cleft, the lobes not very distinctly visible. 



Legs black, the middle tibia with a single bristle on the outer side, 

 the hind tibia with a rather even row of coarse cilia interrupted by 

 one larger about the middle; on the inner hind side the hind tibia 

 just below the middle has an uncommonly long spiny bristle which 

 if bent down would reach the apex. 



Wing subhyaline, narrow apically: the fourth vein slightly curved 

 backward so that the bend is nearer the hind margin than usual; it is 

 rectangular but rounded and the first posterior cell is widely open 

 before the apex ; third vein with five or six hairs at the base reaching 

 almost half-way to the small cross-vein. 



