80 PROCEEDIXGS OF THE NATIONAL MUSEUM vol.93 



with four median anterolateral bristles, two inner ventral bristles; 

 hind tibia unevenly ciliate; wing grayish hyaline, two bristles at base 

 of third vein; squamae white. 



Abdomen black, subshining, lightly covered with gray pollen; sides 

 of second segment rufous; dorsum of first segment and a narrow pos- 

 terior border on remaining segments shining black; when viewed from 

 in front, thin layer of pollen more pronounced basally and laterally on 

 dorsum of segments ; first and second segments with a pair and third 

 with a row of marginal macrochaetae; second and third segments with 

 discal macrochaetae; irregularly arranged; fourth segment covered 

 with erect bristles, some of bristles in discal area approaching one-half 

 size of macrochaetae on third segment ; abdominal hairs depressed on 

 second segment, erect on third. 



Length 8 mm. 



Female (allotype). — Front of head at narrowest 0.28 head width; 

 eight and nine frontal bristles, three preverticals; outer vertical 

 bristle; gena one-eighth eye height; parafrontal silvery black, be- 

 coming blacker toward vertex; arista thickened on basal one-third. 

 Thorax black, subshining, more noticeably pollinose than male. Ab- 

 domen black, subshining, more noticeably pollinose; dorsal vitta on 

 basal half of second segment; second and third segments with one 

 pair of roughly arranged discals and additional discal bristles. 



Length 8 mm. 



The paratype material varies from the descriptions as follows: 

 Male front 0.24 and female front 0.28 to 0.31 head width; frontal 

 bristles seven to nine, one male with three preverticals on one side, 

 one female with only two preverticals, and one female with four; 

 gena one-eighth eye height. Scutellum mostly rufous, black at base. 

 Second and third segments with from one roughly arranged pair of 

 discals to several discals more or less irregularly arranged. 



Length 6 to 9 mm. 



The puparia of Aplomya estigmenensis and A. affinis are alike in 

 their major characteristics. The roughly triangular shaped stigmal 

 plates are about flush with the surface of the puparium, and they 

 are distinctly not protuberant; the three stigmal slits are plain, the 

 bottom one nearly horizontal. There is a slight, crater-shaped, oval 

 elevation at the base of the two stigmal plates which in A. affirm is 

 distinctly wider in diameter than the distance between the two stig- 

 mal plates; whereas in A. estigmenensis this is smaller, the width of 

 the diameter being about equal to the distance between the two plates. 

 The stigmal plates of A. affinis are far above the longitudinal axis or 

 subdorsally located, while in A. estigmenensis they are almost cen- 

 tered, being only slightly above. With the exception of the promi- 



