A Systematic Study of the Anthomyiinae of New York 33 



thorn minute, scarcely distinguishable from setulae; the fourth (distal) section of vein M1+2 

 two or three times as long as the third (previous) section; m-cu cross-vein erect; veins Ri+i and 

 Ml +2 slightly convergent at apices. Upper calyptra covering the lower. Length, 3.75 mm. 



Female. — Similar to male except for the following characters : Color lighter than in male. 

 Paraf rentals brownish cinereous; parafacials and cheeks dull gray, with dark reflections. 

 Thorax dull gray, with cinereous markings; viewed from above and behind, with traces of three 

 brownish vittae on mesonotum and scutellum. Abdomen, viewed from above and behind, 

 with dense grayish pollen; an ill-defined blackish dorsocentral vitta and incisures. Pulvilli 

 infuscated. 



Eyes widely separated; cruciates present. Cheeks smooth, bristles confined to ventral 

 margin and caudal regions of head, with no conspicuous tuft of bristles near vibrissae. Abdomen 

 conical. Fore tibia with one dorsal preapical bristle, one median postero ventral bristle, 

 no median dorsal bristle. Mid femur with one or two basal anteroventral bristles; postero- 

 ventral surface bare except for the apical setae; mid tibia with one anteroventral, one antero- 

 dorsal, two posterodorsal, and two posteroventral bristles. Hind femur with a complete series 

 of anteroventral bristles; posteroventral surface bare except for the apical setae; hind tibia 

 with two or three anteroventral, three or four anterodorsal, and two or three posterodorsal 

 biistles; posterior surface bare of setulae. Tarsi normal, moie depressed than in male. Tarsal 

 claws and pulvilli small, of equal size throughout. Costal thorn distinct, larger than in 

 male; the fourth (distal) section of vein M1+2 not twice as long as the third (previous) 

 section. Length, 4 mm. 



Localities.— 21 6 , 10 9 , Hempstead, Long Island, April 10, 1921; 10 5 , 7 9 , April 24, 1921; 

 66 , 19, Lake Ridge (near Ithaca), May 6, 1922; 4 6 , McLean Bogs (near Ithaca), May 7, 

 1922; 16, Ithaca, May 12, 1922; 19, Coy's Glen, Ithaca, May 23, 1922. 61 specimens: 

 42 males, 19 females. Figures 8, 64, 101, 177, on plates in this memoir. 



Type, allotype, and paratypes. — In the Cornell University collection, Ithaca, New York. 



Paratypes. — In the United States National Museum collection, Washington, D. C 



The species Hylemyia setitarsata is one of the first of this genus to appear 

 in the spring in perceptible numbers. The insects may be seen on the 

 ground, flying about the dead leaves in the woods and coppices. 



Hylemyia spizellae sp. no v. 



Male. — Blackish species. Head blackish; parafrontals and parafacials with whitish prui- 

 nescence; parafacials and cheeks somewhat reddish. Antennae and palpi black. Thorax, 

 viewed from above and behind, with a broad black median vitta and two narrow indefinite 

 sublaterals. Abdomen grayish, with whitish pollen; with a broad black dorsocentral vitta, 

 each section of which is dilated slightly toward the anterior margin of each tergum, where it 

 merges with the dark transverse tergal incisure (as in H. brassicae). Legs black. Wings 

 hyaline; veins brownish; cross-veins not clouded. Calyptrae tinged with brown. Halteres 

 yellowish. 



Head with eyes bare, separated at the narrowest by a distance equal to diameter of anterior 

 ocellus; parafrontals contiguous posteriorly, each with four or five weak bristles; cruciate 

 bristles present; parafacials, in profile, not prominent, but little receding ventrad; cheeks, in 

 profile, diminishing to narrow proportions caudad, invaded by numerous bristles and setulae. 

 Third antennal segment about twice as long as broad, not reaching oral margin; arista with 

 minute pubescence, not noticeably swollen at base. Palpi slender; proboscis subshining. 

 Thorax with a series of acrostical bristles which are irregularly paired, and with two pairs of 

 presutiu-al acrosticals which are stronger than the remaining bristles; posthumeral bristles 

 duplicated; pra shorter than posterior notopleural bristle; sternopleural bristles, 2:2, the 

 ventral bristle of the cephalic pair weaker than the others. Abdomen conical, depressed; 

 second sternum with numerous longish biistles; third and fourth sterna with a series of long 

 black bristles along their lateral margins (as in H. florilega); processes of fifth sternum cylindri- 

 cal, widely separated at base, approximating distad; with a series of longish setulae along 



