No. 2301. NEW SPECIES OF MU8C0ID FLIES— T0WN8END. 589 



Tribe SALMACHNI. 

 ARAVAIPA, new genus. 



Genotype. — Aravaipa atropJiopoda, new species. 



Clypeus moderately sunken. Epistoma not very long, strongly 

 warped. Facialia ciliate. Proboscis nearly head height; palpi slen- 

 der. Antennae inserted on eye middle, the antennal axis only half 

 head height. Third antennal joint three times the elongate second. 

 Arista very short, erect, geniculate, thickened to sharp point; second 

 joint half as long as thu-d. Eyes bare. Thi-ee frontals below base 

 of antennae. Two proclinate and six reclinate fronto-orbitals in 

 female. Ocellars present, reclinate. Cheeks fully one-fourth eye 

 length. Four sternopleiu-als and postsuturals ; three postintraalars, 

 preacrostichals, postacrostichals, and lateral scutellars; one short 

 decussate apical scutellar pau-. Thhd vein bristled nearly to small 

 crossvein; others bare. Costal spine present. Apical cell petiolate 

 ending far before tip ; petiole twice as long as small crossvein. Cu- 

 bitus over two-fifths of wing breadth from hind m^argin, without 

 stump. Hind crossvein considerably nearer to cubitus. Median 

 marginal pair on fii'st two segments, marginal row on last two. Front 

 metatarsi of female longer than following joints together. .Female 

 front tarsi plump, swollen, metatarsi subcompressed, claws minute. 



ARAVAIPA ATROPHOPODA, new species. 



Length, 8 mm. One female, Rio Aravaipa, Arizona, 2,500 feet, 

 August 29, 1917 (C. H. T. Townsend). 



Black, silvery pollinose. Head silvery-white. Second antennal 

 joint and base of third rufous. Palpi fulvous. Frontaha brown. 

 Mesoscutum and scutellum rather th'ckly silvery, former with fom- 

 nearly equal black vittae and with a golden-brown shade over the 

 vittate portion. Front half or m.ore of last three abdominal segments 

 silvery-white, the rest shining black. Wings nearly clear. Tegulae 

 white. 



Type.— Cat. No. 22213, U.S.N.M. 



Tribe GYMNOCHETmi. 

 CHARAPEMYIA, new genus. 



Genotype. — Oharapemyia calida, new species. 



Clypeus flush. Epistoma very long, strongly warped in curve from 

 clypeus. Facialia ciliate about one-third way. HausteUum fully 

 half head height, palpi slender and elongate. Thhd antennal joint 

 about four times second in male. Arista only microscopically pubes- 

 cent. Eyes densely very long-pilose. Male vertex about one-sixth 

 head width. Three frontals below base of antennae. No proclinate 

 fronto-orbitals in male. Ocellars strong. Paraf acialia bare. Cheeks 



