ICHNEUMON-FLIES — GELINAE : MESOSTENINI 131 



P. director is now very common in the northeastern quarter of the 

 United States and southeastern Canada. The normal habitat is 

 gi'assy meadows with interspersed trees and bushes. Since the 

 species has only recently been collected in North America but has 

 been known in Europe for about a hundred and fifty years, it has 

 obviously been introduced into our area. The earliest North Ameri- 

 can specimens w^ere collected in 1938. Within four years from then 

 it had been found throughout most of its present range. During 

 the 1938-1942 period it was collected in the following localities, 

 Hsted by year : 



1938. Quebec, Que.; and Swansea, near Toronto, Ont. 



1939. He d'Orleans, Que.; Laurentides Park, Que.; Stittsville, 

 Ont.; Medina, N.Y. ; and Ithaca, N.Y. 



1940. Pokemouche, N. B.; Quebec, Que.; Marmora, Ont.; 

 Mackinac Island, Mich.; and Sharon Township, Washtenaw 

 Co., Mich. 



1941. East Point, P. E. I.; Lincoln Co., Maine; Greenwich, Vt.; 

 Petersham, Mass.; Ottawa, Ont; East Lansing, Mich.; and 

 Clawson, Mich. 



1942. Midland Co., Mich.; and Takoma Park, Md. 



During the period of 1934 to 1940, we and Mr. R. R. Dreisbach 

 were actively collecting every season in New York and in Michigan, 

 and sometimes in New Jersey, Rhode Island, Pennsylvania, and 

 South Carolina. There were also other collectors picking up ichne- 

 umon flies within the present North American range. If the species 

 had anything like the distribution and abundance then that it does 

 now we would have found it prior to 1938. It must suddenly have 

 become abundant and widespread about 1938, and soon afterward 

 invaded most of the rest of the suitable habitat. 



This species occurs in Europe and in the Transition and Upper 

 Austral zones of eastern North America. 



7. Genus Ischnus 



Figure 311, b 



Ischnus Gravenhorst, 1829, Ichneumonologia europaea, vol. 1, p. 638. Type: 



(Ichneumon porrectorius Fahricius) =inquisitorius (Miiller); designated by 



Westwood, 1840. 

 Habrocryptus Thomson, 1873, Opuscula entomologica, fasc 5, p. 498. Type: 



{Ichneumon porrectorius 'F&hnQ,m.ii)=inquisitorius (MuUer); designated by 



Viereck, 1914. 

 Aglaocryptus Cameron, 1903, Mem. Proc. Manchester Lit. Philos. Soc, vol. 47, 



part 14, p. 31. Type: Aglaocryptus curvimaculatus Cameron; designated by 



Viereck, 1914. 

 Erythrocryptus Cameron, 1905, Invert. Pacifica, vol. 1, p. 126. Type. (Erythro- 



cryptus rufus Cameron) =inquisitori us atriceps (Cresson); monobasic. 



