184 EXTOMOLOGICAL XEWS [^lay, '18 



Pogonomyia alpicola. 



Rondani, Bull. Soc. Ent. Ital.. ii, 337, iS/o; Prod. Dipt. Ital., vi. 



33' 1877 (both male only). 

 Pokorny. Verb. Zool.-Bot. Ges. Wien, xliii, 7, 1893 (female). 



See list of generic cbaracters already given, and also table of spe- 

 cies. Front of male at narrowest somewhat wider than the anterior 

 ocellus, widening rapidly toward antennae ; in female about a third 

 the head-width above, slightly more anterior^'. Parafacials silvery, 

 parafrontals not ; side of epistoma with about 20 long upcurved bris- 

 tles in male only 6 or 8 shorter in female. 



Thorax and abdomen black with thin brownish pruinosity, same in 

 both sexes, and upright long hairs in male which are but little devel- 

 oped in female. Chaetotaxy : ps dc 3 or 4, ant do 2, acr in female only 

 a prescutellar pair, in male numerous tall hairs in front, those behind 

 the suture becoming somewhat like slender bristles ; hum 2 or 3, npl 2, 

 intal 2, supal i and a long prealar, scutellum with 2 lateral and i api- 

 cal, postal 2, mesopleura and sternopleura in male with abundant long 

 hair approximating the length of bristles, no distinct separation be- 

 tween them and the few bristles ; in the female stpl 3. mspl with a 

 row behind and 2 or 3 in front. Calypters white with pale yellow 

 rim and fringe. 



Abdomen unstriped, fourth segment longest in female, sternites in 

 male with long, dense hair. Mid tibia of male with 3 bristles on 

 outer front side, 5-6 on outer hind, 6-8 on inner hind, 4-5 slender on 

 inner front; the female has one or two less in each of these rows. 

 Hind tibia of male with numerous rows of bristles standing in all 

 directions except directly toward the flexor and extensor surfaces,, 

 especially a few characteristic erect, long hairs on inner and outer 

 flexor, an incipient "villosity" ; the calcar is one of a row on the inner 

 extensor side. The female has on the hind tibia only three rows — 

 4 in meso-extensor, 5 on latero-extensor, and 5-6 on latero-flexor. A 

 slight spine below on hind basitarsus. Wing strongly infuscated at 

 base, graduallj' less so toward apex, no costal spine. 



Length 6 to 7^ mm. 



Two males, one female. Tennessee Pass, Colorado. July 

 24-26, 191 7; one male, one female, Europe, from Professor 

 Bezzi. 



Pogonomyia spinitarsis n. sp. 



Closely allied to alpicola. from which it differs by the characters- 

 given in the table and "a few others. The upcurved bristles of the 

 epistoma are only about 8 in male, 5 in female ; arista with very short 

 pubescence ; palpi short. 



Thorax of male not with the striking long hair of alpicola male, 



