16 THE CANADIAN ENTOMOLOGIST 



Frons at vertex about one-half the width of head, at anterior 

 margin slightly over one-third the head width; orbits well defined, 

 five pa'rs of orbital bristles present, the anterior three pairs in- 

 curved, the upper two pairs backwardly directed, all the bristles 

 moderately long but fine, orbital hairs weak; frontal triangle dis- 

 tinct, not reaching to middle of frons; antennae normal in size, 

 third joint rounded; arista thickened at base, tapering to beyond 

 middle, bare, its length equal to anterior width of frons; face very 

 slightly concave; cheek barely as high as third antennal joint, at 

 its highest point about one-fourth as high as eye, marginal hairs 

 numerous, but weak, vibrissae differentiated but not strong; eye 

 higher than long. Mesonotum wth four pairs of dorso-central 



bristles; discal setuke di=itinct, but not very numerous, about five 

 irregular lines between the anterior dorso-centrals; no bristles be- 

 tween the posterior pair, the sstula^'continued to between the lat- 

 ter. Abdomen rather slender, the surface with numerous rather 

 strong hairs; hypopygium normal. Legs with short surface hairs; 

 no posterior bristles on mid tibia. Costa to end of fourth vein, 

 which is almost exactly at wing tip; auxiliary vein indistinct, but 

 complete, not fused with first; veins 2, 3 and 4 distinctly diver- 

 gent apically; outer cross-vein oblique, its upper extremity in ver- 

 tical line with apex of first vein; inner cross-vein at middle of 

 discal cell; last section of fourth vein about eight times as long as 

 penultimate section; last section of fifth vein twice as long as 

 penultimate section; sixth vein ahnost reaching wing margin. 



Length 2 mm. 



Type locality. — Dubois, III., April 24, 1914, taken by sweep- 

 ing in woods (Hard & Malloch). 



This species belongs to the group which is dealt with between 

 captions 28 to 34 in my table of species in Agromyza, above 

 referred to, and is most closely related to fragaricB Malloch, from 

 which it may readily be separated by the very different wing 

 venation. This character als3 serves to distinguish the species 

 from any other in this group, as doss also the abssnce of the mid 

 tibial bristles. Food plant unknown. 



