ART. 8 REVISION OF THE FLY GENUS BELVOSIA ALDRICH 27 



Hine at Fort Ancient, Ohio, June 10-12, 1902; 1 female, Mandan, 

 N. Dak., June 16, 1918 (Aldrich) ; 1 female,Madison Junction, Yellow- 

 stone Park (Melander); and a series of 18 specimens from various 

 counties in Kansas (Beamer, Williams, Brown), received from the 

 University of Kansas collection. 



The type is in the Canadian National Collection. 



Paraiypes. — Male and female. Cat. No. 40371, U.S.N.M. 



BELVOSIA LEUCOPYGA Van der Wulp 



Belvosia leucopyga Van der Wulp, Notes fr m the Ley den Museum, vol. 4, 

 1882, r>. 84; Tijdsch. v. Ent., vol. 26, 1883, n. 27; Biologin, Dipt., vol. 2. 

 1903, ].. 470. 



Belvosiopsis brasiliensis Townsend, Revisto Musni Paulista, vol. 15, 1926, 

 pp. 248, . 89. 



Male. — Front 0.31 of the head width at vertex, the sides nearly- 

 parallel for a short distance, then diverging rapidly; face, parafacials, 

 cheeks, and posterior orbits densely white pollinose with satiny reflec- 

 tion. Parafrontals gray pollinose anteriorly, the pollen becoming 

 thinner above so that the dark ground color is quite conspicuous; 

 frontal bristles in two irregular rows, the hairs below them black; 

 hairs of cheek almost all pale. Antennae black, basal joints brownish 

 red, the third joint not quite three times the second. Arista moderately 

 flattened, the apex, however, slender. Vibrissae rather high above the 

 mouth, the distance being greater than the length of the second anten- 

 nal joint; facial ridges with the bristles almost to the level of the 

 arista. Palpi yellow; beard white. 



Thorax black, the posterior angles and scutellum brown pollinose. 

 Sternopleurals four on one side, five on the other. 



Abdomen deep black, not very shining, the fourth segment densely 

 yellow pollinose except the apical fourth. The pollen extends all the 

 way down the sides and is interrupted by a slender median line 

 above. 



Legs black, front and hind ones broken off. 



Wings dark brown, fourth vein with a rather short bend almost 

 angular. Calypters blackish. 



Length, 11 mm. 



Female. — Front 0.35 of the head width at vertex, somewhat rubbed, 

 the parafrontals a little inflated, with very thin pollen so that the 

 black ground color is conspicuous. From the scars it would appear 

 that most of the bristles are in a single row; there were three pro- 

 clinate orbitals. The hind tibia has a row of bristles on the basal 

 two-thirds, too much broken to describe further. 



Length, 10 mm. 



Redescribed from one male and one female, collected at Valera, 

 Venezuela, by Dr. E. P. DeBellard. Van der Wulp described it from 

 Brazil and in 1903 reported it from Yucatan. 



