Dec, 1913.] The Genus Myiolepla. 209 



Myiolepta ; the anterior cross- vein is plainly before the middle 

 of the discal cell while the petiole of the first basal cell is long 

 agreeing with Syritta and with Myiolepta haemorrhoidalis Philippi 

 from Chile. 



Myiolepta varipes Loew. Dark colored species with the sides 

 of the first two abdominal segments more or less yellow. Length 

 6-8 millimeters. 



Male: Vertical triangle, a spot above the antennae, cheeks 

 and facial tubercle and oral margin adjacent shining black; face 

 and front otherwise black concealed by white pollen, antenna 

 pale brown, third segment nearly round, arista basal and of the 

 same color as its segment. Thorax shining black with sparse 

 white tomentum; wing tinged with yellowish, slightly fumose 

 on anterior part near middle and at apex, first posterior cell closed 

 near the margin, the petiole not half as long as the anterior cross- 

 vein, second vein abruptly curved near the apex and meeting the 

 costa at nearly a right angle; legs variable in color, femora often 

 dark, nearly black, but not always, remainder of legs brown, 

 although not always of the same shade. Abdoinen yellow on 

 the sides of the first two or three segments, otherwise black. 

 The extent of the yellow of the abdomen is variable but no seg- 

 ment either dorsall}^ or ventrally, is likely to be unifomily yellow. 



Female: This sex appears to be uniformly larger than the 

 male, there is more shining space on the face and front and not 

 so much yellow on the abdomen, although the extent of this 

 color is variable. 



Specimens from southern, central and northern Ohio. Previous 

 authors have reported it from Colorado, Washington and Oregon. 



Myiolepta aurinota Hine. Male, length 9 millimeters. 

 Antennae reddish, first two segments slightly darker and more 

 shining than the third, third segment slightly narrower than 

 long, arista colored nearly like the segment that bears it, slightly 

 darkened toward the apex. Region surrounding the ocelli, space 

 above the bases of the antennae, a triangular spot on the face, 

 including the facial collosity, the oral margin adjacent to the 

 facial spot and the cheeks shining black, remainder of front and 

 face gray pollinose, with sparse white hairs near the eyes. Meso- 

 notmn including the scutellum entirely golden tomentose, pluras 

 with white tomentum ; wing nearly hyaline, slightly darkened on an- 

 terior part more especially toward the apex ; general color of the legs 

 black with white hair, all the tibise yellow at bases, first two 

 segments of the middle and hind tarsi yellow, first two segments 

 of each front tarsus dusky, but lighter colored than the three 

 remaining segments, all the femora swollen and with short black 

 spines below on apical parts, abdomen black clothed on the 

 dorsuin with black and golden vestiture, on sides with white 

 vestiture; the black vestiture of the dorsum is very short and 



