76 THE CANADIAN ENTOMOLOGIST 



SYNOPSES OF SOME NORTH AMERICAN 

 ANTHOMYIINAE (DIPTERA). 



BY J. R. MALLOCH, 

 Urbana, 111. 



Herewith are presented synopses of genera of Anthoniyiinae to faciliate 

 the identification of some of the species which I have recently described in this 

 subfamily. 



Ereiiioiiiyoides Mallocti. 



This genus is distinguished from its allies by having hairs on prosternum, 

 propleura in centre, pteropleura, and hypopleura. 



Keys to Species. 



MALES. 



1. Eyes separated by more than twice the width across posterior ocelli; fore 



tibia with 1 posterior bristle; costal setulae distinctly longer than dia- 

 meter of costal vein ; hind tibia with one or two bristles on anterior 

 surface; apex of second antennal segment on inner side transverse; fifth 

 sternite with a number of erect setulose hairs on apical half of -inner 

 margin of each process, the basal half bare sctosa Stein 



Eyes separated by less than twice the width across posterior ocelli ; fore tibia 

 normally with two posterior bristles 2 



2. Eyes separated by less than width across posterior ocelli ; hind tibia reddish ; 



costal setulae weak ; second antennal segment almost transverse on inner 

 side at apex; fifth sternite wath very short hairs on entire length of inner 

 sides of processes cylindrica Stein 



Eyes separated by at least as great a distance as width across posterior ocelli ; 

 hind tibia black 3 



3. Costal setulae weak, hardly distinguishable from the costal hairs ; hind tibia 



without an anterior bristle ; thorax with three pairs of presutural 

 acrostichals ; second antennal segment angulated at apex on inner 

 side fuscipes Malloch 



Costal setulae strong, outstanding ; hind tibia with an anterior bristle ; thorax 

 with two pairs of presutural acrostichals; second antennal segment 

 transverse at apex on inner side similis Malloch 



FEMALES. 

 1. Fourth abdominal tergite obtusely rounded apically, curved over apex of 

 abdomen and armed with long, dense bristles, appearing tufted 

 parkeri Malloch 



Fourth abdominal tergite normal, not curved over apex of abdomen nor tufted, 

 with a few bristles at apex 2 



3. Costal setulae weak, but little stronger than the costal hairs, and not longer 

 than diameter of costal vein ; mid tibia with an anteroventral and an 

 anterodorsal bristle ; apex of second antennal segment angulate at 

 centre on inner side fuscipes Malloch 



