NEW MUSCOID FUES FROM THE ANDEAN MONTANYA 183 



NEW MUSCOID FLIES, MAINLY HYSTRICIIDi^ AND 

 PYRRHOSIIN^ FROM THE ANDEAN MONTANYA 



By CHARLES H. T. TOWNSEND 

 (Continued from page 1 76) ■ 



Eutrichophora, new genus. 



Approaches both Vihrissomyia and Andinomyia in general external 

 characters. It is one of the dolichocephalic puna forms from 1 2,000 

 feet and over, but the head is only moderately elongate. Female front 

 at vertex twice eye-width, that of male one and two-thirds times same. 

 Long pair of proclinate divergent ocellar bristles. FronteJia very wide, 

 equal in width anteriorly and posteriorly, about width of distance sepa- 

 rating vibrissae, same in both sexes. Female with two strong proclinate 

 orbital bristles, male with none. Male with a triple row of bristles on 

 parafrontals, female with a double row inside orbitals. One to three or 

 more facio-orbital bristles, parafacials about as wade as long and clothed 

 with sparse bristly hairs. Second and third antennal joints nearly equal 

 in female ; third noticeably longer in male, about one and one-third times 

 second. First aristal joint short, second slightly elongate. Proboscis 

 long and slender, fully one and one-half times head-height; no palpi, 

 neither bristlets nor other vestige. Cheeks about three-fourths eye-height 

 in male, a little less than that in female. Epistoma about as long as sec- 

 ond antennal joint, normally set at angle of about 45^ to plane of cly- 

 peus. Third antennal joint quite narrow in both sexes, nearly straight on 

 both front and hind edges, gently rounded apically ; arista short, one and 

 one-fourth times third antennal joint. Vibrissae well removed from oral 

 margin, conspicuously longer than peristomal bristles. Eyes bare. Length 

 of peristomal profile not as long as height of occipital, longer thaui height 

 of facial, equal to length of frontaJ. 



On extracephalic characters the genus differs from description of Vu 

 brissomvia by the scutellar bristles being confined to two strong lateral 

 pairs, weaker decussate apical pair, and three or four still weaker discal 

 or subdiscal. Front tarsi of female scarcely widened. 



Reproductive habit, probably leaf-Iarviposition of colored maggots. 



Type, Rutrichophora punensis, new species. 



The frontal, facial, oral, and other characters preclude the possibility of 

 considering this form a subgenus of either Vihrissomyia or Andinomyia. 



