AKT. S REVISION OF THE FLY GENUS BELVOSIA ALDEICH 39 



Legs black, hind tibia with several large suberect bristles on the 

 outer hind side of increasing size, the largest a little below the middle. 

 The pul villi are decidedly small. 



Wings and calypters uniformly blackened; four or five bristles on 

 base of third vein. 



Length, 10.5 mm. 



Described from three females.* The type and one other female were 

 reared from pupae of Callosamia colleta, which were collected at 

 Mirasol in the Republic of Salvador at 4,000 feet altitude, by 

 F. Deininger. The adult emerged November 20, 1913. The third 

 specimen was reared at La Laguna, Republic of Salvador, August 

 1913, by the same collector, from pupa of Attacas orizaha; received 

 from C. W. Johnson. 



Type,— Female, Cat. No. 40472, U.S.N.M. 



BELVOSIA LATA, new species 



Female. — Front at vertex 0.35 to 0.37 of the head width, increasing 

 in width rapidly,' frontal bristles mostly in a single row, with three 

 proclinate orbitals; parafrontals with rather plumbeous pollen, nearly 

 black in some angles; face, cheeks, and posterior orbits densely white 

 pollinose, almost silvery. The hairs below the frontals are black; 

 cheek one-half the eye height, with black rather sparse hairs. Anten- 

 nae black, more or less reddish at the junction of the second and third 

 joints, the third somewhat less than twice the second. Vibrissae 

 considerably above the level of the mouth, not quite so much as in 

 hicinda. Facial ridges rather flat, bristly about half way. Palpi 

 yellow; beard white. 



Thorax black, anterior part densely cinereous pollinose, the hind 

 edge and scutellum with brown pollen. Sternopleurals 3-4. 



Abdomen deep black, hardly at all shining, second segment without 

 any basal pale pollen; third segment with a very narrow interrupted 

 basal band of pale yellow; fourth segment with dense light yellow 

 pollen covering all but the apical fourth, which is strikingly black. 

 First abdominal segment with one pair of stout blunt median mar- 

 ginals; second with two or three pairs, which like the marginal row 

 on the third segment are uncommonly stout, erect, and blunt; the 

 second segment also with one bristle of this kind on the margin at the 

 side; the fourth segment with a submarginal row of about 12, almost 

 as stout as on the third segment. Between these and the extreme 

 tip there is another row of smaller bristles. Venter with stout spines 

 mostly on the inflexed tergites. 



♦ A male and 7 females of Belvosia nigrifrons, new species, were received later from P. V. Siggers, La 

 Cleba, Honduras. He reared them from a single larva of a large moth of the genus Rothschildia. The 

 male has a narrower basal pale band on the third segment, and the front is not so strikingly darkened, 

 being silvery with a perceptible dark tinge. The front in the male is narrowest at the vertex, where it 

 Is 0.33 of the head width. 



