A Systematic Study of the Anthomyiinae of New York 51 



Genus Prosalpia Pokorny 



1893 Pokorny. Wien. Ent. Ztg., vol. 12, p. 54. 

 1916 Stein. Arch. Naturgesch., (1915) vol. 10, p. 156. 

 1920 Mall. Trans. Amer. Ent. Soc, vol. 46, p. 183. 



The following key separates the female specimens of Prosalpia: 



Females 



1. Fore tarsus with segments 2 and 3 noticeably broadened; thorax with at least one pair of 

 strongly developed presutural acrostical bristles, stouter and longer than the para- 

 frontal bristles silvestris Fall. 



Fore tarsus with segments 2 and 3 normal, not noticeably broadened; thorax with pre- 

 sutural acrostical bristles weakly developed, not so stout nor so long as the parafrontal 

 bristles angustitarsis Mall. 



Prosalpia angustitarsis Malloch 



1920 Mall. Trans. Amer. Ent. Soc, vol. 46, p. 184. 



Localities. — 16, Beaver Kill, August 12, 1909 (collected by E. T. Cresson); 19, Black 

 Mountain, Lake George, September 4, 1920 (collected by M. D. Leonard). 



Prosalpia silvestris Fallen 



1824 Musca silvestris Fall. Muse, p. 70, no. 74. 



1838 Anihomyza argyrocephala Zett. Ins. Lapp., p. 670, no. 37, 9 . 



1838 Anihomyza murina Zett. Ins. Lapp., p. 682, no. 91, 9 . 



1845 Aricia argyrata Zett. Dipt. Scand., vol. 4, p. 1443, no. 53, 9 . 



1845 Aricia decrepita Zett. Dipt. Scand., vol. 4, p. 1454, no. 65, 9 . 



1849 Anthomyia alpina Walk. List Dipt. Brit. Mus., part 4, p. 927, 9 . 



1849 Anthomyia donuca Walk. List Dipt. Brit. Mus., part 4, p. 946, 9 . 



1849 Eriphia grisea Walk. List Dipt. Brit. Mus., part 4, p. 962, 6 . 



1860 Aricia lepturoides var. b Zett. Dipt. Scand., vol. 14, p. 6235, no. 125, 6 • 



1862 Eriphia billbergi Schin. nee Zett. Fauna Austr., part 1, p. 626, 9 . 



1893 Prosalpia hydrophorina Pokorny. Wien. Ent. Ztg., vol. 12, p. 59, no. 3. 

 Locality. — 19, Lake Tackawasick, June 25, 1920 (collected by M. D. Leonard). 



