48 H. C. HUCKETT 



Pegomyia winthemi Meigen 



1826 Anthomyia winthemi Meig. Syst. Beschr., vol. 5, p. 186, no. 179, 9 . 



1839 fSapromyza blepharipteroides Duf. .Ann. Soc. Nat., ser. 2, vol. 12, p. 42, 



no. 12. 



1840 Anihomyia scutellaris v. Ros. Correspondenzbl. Wiirttemb. Verb., vol. 1, p. 9, 9 . 

 1846 Anthomyza capucina Zett. Dipt. Scand., vol. 5, p. 1753, no. 135. 



1846 Anthomyza latitarsis Zett. Dipt. Scand., vol. 5, p. 1754, no. 136. 

 1866 Anthomyia digitaria Rond. Atti Soc. Milano, vol. 9, p. 152, no. 13. 

 1883-84 Pegcmyia transversa Meade nee Fall. Ent. Mo. Mag., vol., 20, p. 12. 

 1906 Pegomyia winthemi var. obscura Stein. Wien. Ent. Ztg., vol. 25, p. 62. 



Records. — Earliest: Lakeville, Long Island, May 22, 1921. Latest: McLean Bogs (near 

 Ithaca), September 9, 1920. 35 specimens: 21 males, 14 females. Figures 30, 80, 125, 

 187, on plates in this memoir. 



Genus Pogonomyza Schnabl and Dziedzicki 



1911 Schnb. and Dzied. Die Anthomyiden, p. 99. 



1916 Stein. Arch. Naturgesch., (1915) vol. 10, p. 138. Hylemyia p. p. 



1921 Mall. Canad. Ent., vol. 53, p. 78. 



The following keys separate the species of Pogonomyza: 



Males 



1. Hind tibia with antero- and posteroventral apical bristles; blackish species, shining. . . .2 

 Hind tibia with only an anteroventral apical bristle present, the position for the postero- 

 ventral apical bristle being filled by a series of setulae; grayish species, densely pollinose. 



cinerosa Zett. 



2. Arista plumose, the longest hairs exceeding in length the breadth of the third antennal 



segment flavipennis Fall. 



Arista pubescent or bare, the longest hairs shorter than the breadth of the third antennal 

 segment 3 



3. Mid femur with a number of strong bristles on apical half of anteroventral surface, and 



two very long biistles on basal half of posteroventral surface spinosissima Mall. 



Mid femur without any strong bristles on apical half of anteroventral surface; the bristles 

 on basal half of posteroventral surface short 4 



4. Wings infuscated, smoky; arista with a noticeable subglobose swelling at base; antennae 



and arista black gleniensis sp. nov. 



Wings yellowish; arista not noticeably swollen at base; second antennal segment yellow- 

 ish along apical border proboscidalis Mall 



Fem^ales 



1. Hind tibia with antero- and posteroventral apical bristles; black species, shining; wings 



yellowish 2 



Hind tibia with only an anteroventral apical bristle, the position for the posteroventral 

 apical bristle being filled by a series of setulae; grayish species, densely pollinose. 



cinerosa Zett. 



2. Arista plumose, the longest hairs exceeding in length the breadth of the third antennal 



segment flavipennis Fall. 



Arista pubescent or bare, the longest hairs shorter than the breadth of the third antennal 

 segment 3 



3. Pra longer than posterior notopleural bristle; abdomen piceous, polished and shining. 



campestris sp. nov. 

 Pra shorter than posterior notopleural bristle; abdomen blackish, with traces of brown- 

 ish gray pollen , 4 



