912 Braconidae 



subfamily blacinae 1s9 



The Blacinae are only imperfectly known from the standpoint of classification, 

 and also as regards habits and biology. The species of some genera appear to be 

 exclusively parasites of lepidopterous larvae, while those of other genera parasitize 

 Coleoptera, and, in a few instances, Diptera, 



Blacus Nees 



B. lactucaphis (Fitch). First Rep. Ins. N.Y., 1854, p. 136. Described from NY, 



as an Aphidius. 

 [B. orchesiae (Ashm.). _ Proc. U.S. Nat. Mus., 1888, 11:645. Recorded as a 

 parasite of Orchesia castanea Melsh. (Melandryidae).] 



ORGILUS Haliday 



O. gelechiaevora Cush. Proc. U.S. Nat. Mus., 1920, 58:291. A parasite of 



Gelechia trialbamaculella Chamb. 

 [O. kearfotti Ashm. Journ, N. Y. Ent. Soc, 1903, 11 : 144. A parasite of Reciirvaria 

 juniper clla Kf.] 



EUEADIZON Nees 



[E. americanus Cress. Can. Ent., 1872, 4 : 230. Occurs throughout the northeastern 



States and in Canada.] 

 {E. gracilis Prov. Nat. Can., 1880, 12: 171. Range extends at least from Canada 



to Va. It has been recorded as a parasite of the oriental peach moth, Laspey- 



resia molesta Busck.] 

 [E. phymatodis Ashm. Proc. U.S. Nat. Mus., 1888, 11:644.] 

 E. pleuralis Cress. McLean, Je 24, ^'i^ (Mues-CU). 



Brachistes Wesmael 



B. magdali (Cress.). Psyche, 1878, 2:189. Syracuse. A parasite of the larvae 

 of Magdalis harhita Say and M. olyra (Hbst.) (Curculionidae). 



B. major (Cress.). Can. Ent., 1872, 4:229. Occurs in NY. 



[B. tibiator (Cress.). Can. Ent., 1872, 4:229. Said to be a parasite of the straw- 

 berry weevil, Anthonomus signatus Say.] 



SyrrhiZUS Foerster 



[S. diabroticae Gahan. Ohio Journ. Sci., 1922, 22 : 141. A parasite of the adult 

 striped cucumber-beetle, Diabrotica vittata (Fab.).] 



Leiopiiron (Nees) Haliday 



[L. americanus (Ashm.). Journ. Cincinnati Soc. Nat. Hist., 1895, 17:47. A 

 parasite of the Hessian fly.] 



SUBFAMILY ICHNEUTINAE 



The subfamily Ichneutinae constitutes a small group, containing but few described 

 species. Those forms the habits of which are known, attack sawfly larvae. 



^^^ Includes Calyptinae, Leiophroninae, and Blacinae of Szepligeti's classification. 



