A Systematic Study of the Anthomyiinae of New York 41 



4. All femora infuscated 5 



All femora largely yellow, or the first pair only partly infuscated 8 



5. Abdomen with a distinct mid-dorsal vitta; terga 4 and 5 with large brownish lateral 



areas on anterior half; palpi black acutipennis Mall. 



Abdomen with an ill-defined mid-dorsal vitta; no lateral markings on terga 6 



6. Eyes separated by a distance equal to that between posterior ocelli; parafrontals not 



contiguous; calyptrae equal 7 



Eyes approximate; parafrontals contiguous posteriorly; lower calyptra protruded; palpi 

 entirely infuscated fringilla Mall. 



7. Pra longer than posterior notopleural bristle; third antennal segment entirely blackish; 



palpi entirely yellow; lateral margins of oral cavity and face without dark penciled 



markings vanduzeei Mall . 



Pra shorter than posterior notopleural bristle; third antennal segment with a narrow 

 transverse orange band at base on inner side; palpi yellowish, with apices infuscated; 

 lateral margins of oral cavity and face with dark penciled markings ruficeps Stein 



8. Pra missing; r-m and m-cu cross-veins clouded; scutellum with a yellov/ streak on ventral 



surface; abdomen variegated in color afinis Stein 



Pra present; cross-veins clear; scutellum with no such marking 9 



9. Abdomen largely yellow or yellowish; terga occasionally with narrow, dark, posterior 



incisures 10 



Abdomen blackish or grayish, without incisures 17 



10. Thorax largely yellowish 11 



Thorax largely blackish 13 



11. Thorax and antennae entirely yellowish testaceous; bristles near ' posterior margin of 



oral cavity gold-colored unicolor Stein 



Thorax, viewed from behind, with at least traces of a dorsocentral vitta; third antennal 

 segment infuscated 12 



12. Parafacials and cheeks, in profile, black, with whitish pruinescence; fifth abdominal 



sternum prominent, blaclash; all femora entirely yellow luteola Mall. 



Parafacials and cheeks, in profile, yellowish; mid and hind femora with a small, infuscated, 

 apical area on dorsal surface; fifth abdominal sternum inconspicuous, yellowish. 



geniculata Bouch6 



13. Palpi yellow 14 



Palpi infuscated 16 



14. Lower calyptra distinctly larger than upper, protruding well beyond margin of upper; 



eyes separated, at narrowest part, by a distance about equal to diameter of anterior 



ocellus; abdominal terga with posterior incisures fuscofasciala Mall. 



Lower calyptra not larger than upper, protruding slightly, at most, beyond margin of 

 upper; eyes separated, at narrowest part, by a distance at least equal to that between 

 posterior ocelli; abdominal terga without incisures 15 



15. Hind tibia with three posterodorsal bristles; scutellum entirely black; processes of fifth 



sternum blackened bicolor Wied. 



Hind tibia with two posterodorsal bristles; scutellum partly yellowish; processes of fiith 

 sternum yellowish calyptrata Zett . 



16. Tarsi black; lower calyptra protruding shghtly beyond margin of upper; posthumerai 



bristles duplicated; hind tibia with four short, uniform, anterodorsal bristles. 



nigritarsis Zett. 

 .Tarsi yellowish, at least the metatarsi; lower calyptra protruding well beyond margin 

 of upper; posthumerai bristles not dupUcated; hind tibia with at most three antero- 

 dorsal bristles, not uniform in size winthemi Meig. 



17. Palpi blackish; pra equal to or exceeding in length the posterior notopleural bristle; 



arista distinctly pubescent or plumose; parafrontals contiguous posteriorly 18 



Palpi yellow, with apices infuscated; pra short, half the length of posterior notopleural 

 bristle; arista bare; parafrontals separated by a frontal vitta hyoscyami Panz. 



18. Calyptrae and halteres whitish; basal segment of hypopygium polished, shining; post- 



humeral bristles not duplicated 19 



