A Systematic Study of the Anthomyiinae of New York 13 



Legs and palpi yellowish, the latter sometimes infuscated distad; pra shorter than posterior 

 notopleural bristle; arista sparsely plumose vittipes Zett . 



Eustalomyia festiva Zetterstedt 



1845 Zett. Dipt. Scand., vol. 4, p. 1424, no. 34. 

 Localities. — 1 6 , Ithaca, June, 1922 (collected by H. C. Hallock); 1 9 , Ithaca, June; 1 9 , 

 Mount ^Tiiteface (alt- 2000-4000 ft.), August 23-24, 1916. 3 specimens: 1 male, 2 females. 

 Figure 167 on Plate XV. 



Eustalomyia vittipes Zetterstedt 



1845 Anthomyza vittipes Zett. Dipt. Scand., vol. 4, p. 1649, no. 16. 



1852 Anthomyza decorata Zett. Dipt. Scand., vol. 11, p. 4323, nos. 21, 22. 



1866 Anthotmjia arrogans Rond. Atti Soc. ^lilano, vol 9, p. 185, no. 17. 

 Localities.— 16, Coy's Glen, Ithaca, Mav 14, 1922; 1'6, June 12, 1920; 19. August 1, 

 1920; 1 6 , Aurora, May 30, 1920; 1 9 , Lake Ridge (near Ithaca), June 1, 1920; 1 9 , Ring- 

 wood (near Ithaca), June 26, 1920; 19, Syosset. Long Island, July 19, 1921; 1 6 , 1 9 , Old 

 Forge, First Lake, August 23, 1922 (collected by AI. D. Leonard). 9 specimens: 4 males, 

 5 females. Figures 47, 92, 141, 180, on plates in this memoir. 



Genus Hammomyia Rondani 



1830 Rob.-Desv. Essai IMvod., p. 562. Leucophora. 



1877 Rond. Dipt. Ital., Prodr., vol. 6, p. 233, no. 23. Hvlephila. 



1877 Rond. Dipt. Ital., Prodr., vol. 6, p. 236, no. 24. 



1919 Stein. Arch. Xaturgesch., (1917) vol. 83, part 1, p. 152, no. 71. Ammomvia. 



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



The following key separates the species of Hammomyia: 



Males and females 



1. Tibiae entirely black; arista with minute pubescence , 2 



The hind tibiae at least reddish and largely infuscated; arista with longish pubescence, the 



hairs longer than basal diameter of arista; pra absent 4 



2. ]\Iid tibia with one or more ventral bristles; third antennal segment one-half longer than 



wide; arista shorter than vibrissae 3 



Mid tibia without a ventral bristle; third antennal segment tviice as long as wide; arista 

 longer than vibrissae maculata Stein 



3. Pra longer than posterior notopleural bristle; one or more pairs of bristle-like presutural 



acrosticals; fore femur with a short median series of semi-erect setulae on anterior 



(inner) surface; cruciate bristles present unilineata Zett. 



Pra shorter than posterior notopleural bristle; presutural acrostical bristles weak and 

 setulose; fore femur without a median series of semi-erect setulae on anterior (inner) 

 surface; cruciate bristles absent paludis Joh. 



4. Abdomen with distinct brown lateral markings on posterior half of each tergum; cross- 



veins r-7n and 7n-cu clouded; female with a mid-ventral bristle on mid tibia. 



johnsoni Stein 

 Abdomen with indefinite brownish transverse incisures along anterior and posterior 

 margins of each tergum; cross-veins I'-m and jn-nt not infuscated; female vdth. no mid- 

 ventral bristle on mid-tibia mnrylandica IMall. 



Hammomyia juhnsoni Stein 



1898 Hylemyia johnsoni Stein. Berl. Ent. Ztschr., (1897) vol. 42, p. 215. 

 Records.— Ea,T\iest: Coy's Glen, Ithaca, May 14, 1921. Latest: Ithaca, July 10, 1920. 

 76 specimens: 49 males, 27 females. Figures 45, 90, 135, 184, on plates in this memoir. 



