FAMILY MrSCID.E 393 



64. Facial depression witii almost parallel sides on more than the lower 



half or conspicuously narrower between the vibrissae than at the 



middle 65 



Facial depression widening- below, wider at the vibri-^sse than at a 

 point above the middle QG 



65. No bristly hairs on posteroventral surface of posterior tibiae in male; 



ovipositor not terminating in two or more spines (27). 



*Pegomya Desvoidy 

 A series of long hairs on posteroventral surface of hind tibiae; ovi- 

 positor bearing two or more apical spines (21, 22), 



Hammomya Rondani 



66. Antennfe separated from each other by a distinct elevation which 



continues onto the face jEgle Desvoidy 



Antennae not conspicuously separated from each other at the base. ... 67 



67. Oral margin strongly produced, the hairs surrounding the vibrissae 



extending well onto the sides of the face Macateeia Malloch 



Oral margin not unusually produced, the hairs not extending onto the 

 face 68 



68. Middle tibiae with anteroventral bristle near the middle. 



Paregle Schnabl & Dziedzicki 

 Middle tibiae without such bristle 69 



69. Three pairs of postsutural dorsocentrals 70 



Four pairs of postsutural dorsocentrals Macrophorbia Malloch 



70. Proboscis unusually stout Pycnoglossa Coquillett 



Proboscis not unusually robust 71 



71. Posterior tibiae v^ith two long bristles near the middle, on the upper 



surface, each at least half as long as the tibia. . .Prosalpia Pokorny 

 Posterior tibiae without such bristles 72 



72. Sides of the scutellum with more than a single row of hairs below 



the marginals; interfrontals absent in both sexes; posthumeral and 

 anterior .sublateral bristles equally strong (18, 19) . .Eremomyia Stein 

 Not with this combination of characters 73 



73. Eyes of males broadly separated; acrosticals hair-like and short. 



Chirosia Rondani 

 Eyes of males approximate, very rarely separated by much more than 

 the distance between the posterior ocelli 74 



74. Posterior tibiae without posterodorsal bristles, or with two (27). 



JPegomya Desvoidy 

 Posterior tibije with one posterodorsal bristle or with more than two 

 (24, 31, 32) §Hylemya Desvoidy 



75. Arista plumose, pubescent or bare 76 



Arista pectinate, with rays on the upper side 144 



76. First vein setose, on most of its length 77 



First vein bare, or with setulse only before the humeral crossvein. ... 82 



* Malloch, 1920, Bull. Brooklyn Ent. Soc, xv, p. 121. 



t Malloch, 1920, Can. Ent., liii. )). 77. 



:i: Malloch, 1920, Bull. Brooklyn Ent. Soc, xv, p. 121. 



§ Malloch, 1920, Ohio Journ. Sci., xx, p. 274. 



