918 Braconidae 



Aug 24 (Mues-CU) ; Little Falls. Additional hosts are Harmologa fumiferana 

 Clem., and the strawberry leaf-roller, Ancylis comptana Froelich (both 

 Tortricidae). 

 M. vulgaris (Cress.). Can. Ent., 1872, 4:83. McLean, Jl 10-Aug 24 (Mues-CU). 

 Probably the most common and most widely distributed of the North American 

 species. Occurs throughout the US and much of Canada. An abundant 

 parasite of Noctuidae of the cutworm type. Recorded from various species of 

 Feltia, Euxoa, and Scotogramma. 



SUBFAMILY APHIDIINAE 1" 



All the species of the Aphidiinae are internal parasites of aphids. The entire 

 developmental period is spent within the body of the host, the adult parasite finally 

 emerging by cutting a circular hole in the aphid shell. The host is killed at the 

 time when the parasitic larva completes its growth, and accordingly aphids which 

 contain pupae or adults of the parasite are readily distinguished in the field. As a 

 rule development is very rapid, most species passing through many generations in a 

 season. Some of them are very important parasites of particularly injurious aphids. 

 But they are themselves subject to extensive parasitism by certain secondary parasites, 

 especially by cynipoids belonging to the genus Charips and by various species of 

 chalcidoids. 



Ephedrus Haliday 



E. incompletus Prov. Addit. fauna Can. Hymen., 1886, p. 156. Lockport, Je 14, 

 from Myzus ccrasi (Fab.) (Bdy-CU). Widely distributed over the eastern 

 half of the US and in Canada. Recorded as a parasite of Myzus cerasi (Fab.), 

 Macrosiphiim rosae (L.), and Tritogenaphis rtidbeckiae (Fitch). 

 [E. nitidus Gahan. Proc. U.S. Nat. Mus., 1917, 53 : 195. A parasite of the cabbage 

 aphis, Brevicoryne brassicae (L.).] 



Praon Haliday 



[P, americanus (Ashm.). Proc. U.S. Nat. Mus., 1888, 11:669. Recorded as 

 attacking the apple grain aphid, Rhopalosiphum priinifoliae (Fitch).] 



P. cerasaphis (Fitch). First Rep. Lis. N.Y., 1855, p. 138. Described from NY 



material reared from the cherry aphid. 

 P. humalaphidis Ashm. Proc. U.S. Nat. Mus., 1888, 11:657. Richfield Sps., 

 type locality. 



P. simulans (Prov.). Addit. fauna Can. Hymen., 1856, p. 153. Ithaca, Jl, Gris- 

 wold (Gahan-CU). A parasite of Tritogenaphis rudheckiae (Fitch); also 

 reared at Ithaca by Miss Oris wold from Illinoia pisi (Kalt.) and Macro- 

 siphum cornelli Patch. 



P. vibumaphis Fitch. First Rep. Ins. N.Y., 1856, p. 137. Described from NY. 

 The identity of the species is somewhat uncertain. Gahan (Md. Agr. Exp. Sta., 

 1911, Bull. 152, p. 197) states that a specimen in the U.S. Nat. Mus., whichis 

 labeled as type but which does not fully agree with the description, is a species 

 of Lysiphlebus. The species is here provisionally retained in the genus Praon. 



Aphidius Nees 



[A. avenaphis (Fitch). Sixth Rep. Ins. N. Y., 1865, p. 98. A parasite of the 

 apple grain aphid, Rhopalosiphum prunifoliae (Fitch), and Macrosiphiim 

 cerealis (Kalt.).] 



"■* Aphidiinae of North America. By A. B. Gahan. Md. Agr. Exp. Sta., 1911, Bull. 152, 

 p. 147-200. 



