L 



NO. 1935. MUSCOID FLIES FROM aOUTS AMERICA— T0WN8END. 329 



ANDINOMYIA, new genus. 



General characters of Micropalpine flies and very similar in most 

 characters to Vibrissomyia, but head much elongated anteriorly. 

 Parafacials quite as wide as long, or nearly as wide as eye; cheeks 

 quite as wide as eye-height, nearly twice as long as mean width, 

 greatly widened and somewhat inflated posteriorly. Peristomal 

 bristles conspicuously shorter than vibrissse, only two or three bristles 

 on faciaha. Second antennal joint strongly elongate, longer than 

 third even in male. Lower outline of the wedge-shaped production 

 of epistoma in profile more sharply bent from the Hue. of oral profile. 

 Proboscis very long and slender, extremely awl-like, below genicula- 

 tion conspicuously longer than greatest head-length. Otherwise in 

 all head characters as in Vibrissomyia. 



Three sternopleural and three postsutural bristles. Three lateral 

 pairs of scutellar bristles, the two posterior very strong and equal, 

 the anterior much weaker and not over half as long; pair of decussate 

 apical bristles a little longer than anterior lateral. Abdomen with 

 same disposition of macrochsetse as in Vibrissomyia, but the bristles 

 not so strong and the erect bristly hairs of anal segment not present. 

 Leg and wing characters the same as for Vibrissomyia, but hind cross- 

 vein more deeply bulged out, legs a little more strongly spined. 



Reproductive habit, leaf-larviposition; uterus Strap like, developing 

 colored maggots in all probability. 



Type-species. — Andinomyia cruciata, new species. 



ANDINOMYIA CRUCIATA, new species. 



Length of body, 10 to 12 mm.; of wing, 8 to 9 mm. Three females 

 and five males, Tirapata, high puna region of Lake Titicaca, Peru, 

 about 13,000 feet, January 28, 1910, on flowers of dwarf species 

 of HypocTioeris. 



Head in both sexes luteous and densely fight golden polfinose, the 

 facial plate without pollen on produced portions, the parafrontals 

 blackish with poUen distinctly showing. In a direct view the para- 

 facials are abruptly defined, without apparent poUen, of same deep 

 luteous color as the produced epistoma and peristoma. Frontafia 

 brownish. Third antennal joint and arista dark brown or blackish, 

 the first antennal joint reddish, second joint brown or blackish, with 

 apex more or less reddish. Pile of occiput golden to pale brassy. 

 Pleurae very thinly dusted with brassy, pollen, mesoscutum more dis- 

 tinctly so leaving the four usual vittse; scutellum broadly reddish on 

 margin to wholly reddish-yeUow, usually the latter. Abdomen shin- 

 ing blackish, a faint brassy polfinose median vitta, and anterior border 

 of anal segment with same brassy pollen; female with the sides of 

 first two abdominal segments reddish, in male extending on the third 



