A Systematic Study of the Anthomyiinae of New York 29 



the upper ones. Abdomen shorter than length of thorax, somewhat depressed, slightly taper- 

 ing at apex; processes of fifth sternum conspicuous, piceous, polished, shining; each process 

 divided broadly into an anterior and a posterior arm; the anterior arms broad and flat, plate- 

 like, surmounted by an apical tuft of setulae, and lying adjacent to one another in the mid- 

 ventral plane in a pendent position; the posterior arms attenuated, rodlike, surmounted by 

 a strong apical hook, and lying separated from one another in a horizontal position; the 

 extended ventral margin of each process fringed with long, fine setulae directed mesad. Fore 

 tibia with one posteroventral bristle and a pointed, weak, posteroventral apical setula. 

 Mid femur with a proximal row of posteroventral bristles; mid tibia with one anterodorsal, 

 one posterodorsal, and one posteroventral bristle, all very weak. Hind femur with a complete 

 row of anteroventral bristles and an interrupted row of weaker posteroventral bristles; hind 

 tibia with four anteroventral setulae, six or seven diverse anterodorsal and three postero- 

 dorsal bristles, and a median series of four or five setulae on posterior surface; no pos- 

 teroventral apical bristle. Pulvilli and claws of equal size on all tarsi. Costal thorn 

 minute, scarcely separated from costal setulae. Upper calyptra covering the lower. Length, 

 4 mm. 



Female. — Similar to male except for the following characters: Abdomen, viewed from 

 above and behind, with light grayish pollen; dorsocentral vitta tapering caudad; terga with 

 narrow dark anterior incisures; fifth abdominal tergum with a few erect bristles on discal 

 area, besides the normal setulae. Wings clear. Eyes separated by a broad front, as broad 

 as long; cruciates present; cheeks smooth directly beneath ventral margin of eye, with slight, 

 if any, encroachment of setulae toward the eye's margin. Second aristal segment with a 

 slight reddish infuscation, with no sensory tubercles on inner surface as in the male; arista 

 somewhat thickened at base. Thorax with one pair of strongly developed presutural acrosticals , 

 besides two weaker pairs. Pra fully haK as long as the following bristle. Sternopleurals, 

 2:1, the latter possessing two weaker setae ventrad, the former with the ventral bristle weak. 

 Abdomen broadly ovoid, the third tergum, viewed from above, equal in width to three-quarters 

 the length of abdomen. Fore tibia with one dorsal and one or two posteroventral bristles. 

 Mid femur with a few anteroventral bristles toward base; posteroventral bristles weaker than 

 in male; mid tibia with one anterodorsal, two posterodorsal, and two posteroventral bristles, 

 all stronger than in male. Hind femur with a distal row of four or five anteroventral bristles, 

 and a basal ventral bristle; posteroventral surface bare except for one or two apical setae; 

 hind tibiae with no series of setulae on the posterior surface. Length, 4-5 mm. 



Localities.— 1 6 , Ithaca, April 24, 1923; 1 9 , May 26, 1907; 1 9 , Lake Ridge (near Ithaca) , 

 April 30, 1922; 1 6 , May 6, 1922; 16, 19, Ithaca, June (coUected by R. C. Shannon). 6 

 specimens: 5 males, 1 female. Figiires 7, 63, 112, on plates in this memoir. 



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



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



Hylemyia laevis Stein 



1898 Chortophila laevis Stein. Beri. Ent. Ztschr., (1897) vol. 42, p. 231. 

 Records. — Earliest: Ithaca, June 29, 1920. Latest: Coy's Glen, Ithaca, September 9, 

 1920. 122 specimens: 84 males, 38 females. Figm-es 15, 66, 117, 171, on plates in this 

 memoir. 



Hylemyia lasciva Zetterstedt 



1826 Anihomyia partita Meig. Syst. Beschr., vol. 5, p. 100. 

 1826 Anthomyia asella Meig. Syst. Beschr., vol. 5, p. 110. 

 1838 Anthomyza lasciva Zett. Ins. Lapp., p. 666. 



Localities.— ^t, 19, Lake Ridge (near Ithaca), May 6, 1922; 16, April 4, 1922; 16 r 

 Ithaca, May 20, 1920 (collected by R. C. Shannon); 1 9 , July 2, 1902; 1 9 , Ringwood (near 

 Ithaca), June 26, 1920; 19, Old Forge, First Lake, August 23, 1922 (coUected by M. D. 

 Leonard). 9 specimens: 5 males, 4 females. Figures 10, 59, 115, 178, on plates in tliis 

 memoir. 



