AET. 15 NEW GENERA AND SPECIES OF MUSCOID FLIES ALDRICH H 



ture ; the inner forceps forming a short heart- shaped pad like struc- 

 ture covered with dense hairs, the notch being next the anus and the 

 tip very blunt; the outer forceps long and slender, shining black, 

 curving toward each other at tip; penis upright and blunt, the 

 back black, the front with white swelling on basal half and the 

 apex with narrow white collar. 



Described from one male and five female specimens. The type, 

 female, is from Eiverhead, N. Y., collected May 3, 1927, by H. C. 

 Huckett. The allotype male and one paratype female were reared at 

 Newbury, Vt., from Malacosoma disstria on April 24-29, 1925 (Gip. 

 Moth Lab. No. 10081K6) ; one female from the same host at Dedham, 

 Mass., May 4, 1916 (G. M. L. No. 10001C18) ; another from the 

 same host at Bradford, Vt., April 27, 1925 (G. M. L. No. 10081K6a) ; 

 and another from Malacosoma americanum at Melrose Highlands, 

 Mass., May 11, 1916 (G. M. L. No. lOOOOi). 



ry;;^.— Female, Cat. No. 41814, U.S.N.M. 



The female of the species differs from all others known to me in the 

 numerous long hair like bristles occurring on all the tibiae; the 

 only species approaching it is Metopomuscopter-yx tibialis Coquillett, 

 which differs in several important characters. The nearest relative 

 I can discover is Ghromatocera setigena Coquillett, which, however, 

 has ordinary tibiae, hairy eyes, the fourth vein with rectangular 

 bend and ending considerably before the tip. 



TROPHOMYIA, new genus 



Allied to Tachina, agreeing with the genotype {grossa Linnaeus), 

 in being large and robust, with stout but not very numerous spines; 

 parafacials hairy, vibrissae above oral 'margin; second antennal 

 joint longer than third; vibrissal axis equal to antennal; postalar 

 callosites with tuft of bristles which blend with a depressed marginal 

 row on scutellum; and in many details. It differs from grossa in 

 having the face flat, the oral margin not projecting, the facial ridges 

 more bowed outward, strongly converging below, bristles of thoracic 

 disk much reduced except at sides and behind, etc. 



Eyes bare; second joint of arista elongated, third bare; ocellar 

 bristles absent or small and proclinate; palpi normal, proboscis 

 short, no discal bristles on abdomen except last segment; second to 

 fourth sternites with a group of stout spines, none on inflexed ends 

 of tergites ; presternum bare. 



Genotype. — Trophomyia pictipennis, new species. 



TROPHOMYIA PICTIPENNIS, new species 



Male.—Front 0.28 of head width at vertex, thence widening rap- 

 idly ; head wholly deep golden pollinose, the frontal stripe more red- 

 dish ; parafacials with thin yellow to blackish pile ; antennae reddish 



