950 Hymenoptera in America North of Mexico 



This is a cosmopolitan genus consisting of about 20 species which are hyperparasites (and per- 

 haps primary parasites) of aphids. 



Taxonomy: Gahan, 1923. Ent. Soc. Wash., Proc. 25 (9): 187-188. —Narayanan, 1941. Indian 

 Jour. Ent. 3 (1): 62. -Risbec, 1952. Inst. Sci. Madagascar Ser. E, Ent., Mem. 2: 6, 52. 

 — Alam, 1961. Beitr. zur Ent. 11 (7-8): 803-807. -Hoffer, 1965. Acta Ent. Bohemoslov. 62 

 (2): 110-128. -Trjapitzin, 1967. Akad. Nauk SSSR Zool. Inst., Trudy 41: 202-205. 

 -Graham, 1969. Poiskie Pismo Ent. 39 (2): 252-255. 

 aphidivorus (Mayr). Maine, Conn. s. to Fla., w. to La., Idaho. Host: Rhopalosiphoniu.s soknii 



(Thos.), Neofctapliis bakeri (Cowen), Cdcariella aquatica (G. and B.), Brevicoryne 



brassicae (L.), Acyrthosiphon comelli (Patch), M. avenae (F.), M. liriodendri (Monell), 



Mtiztts persicae (Suiz.), Sell iza phis gr(U)iiiiu)ii (Rond.), Trialeiirodes vapomrioru})! 



(Westw.), Aphelinus juncundus Gahan, A. sanbomiae Gahan, A. semiflavus How., A. 



sp., Aphiditts fesfaceipes (Cress.), A. spp. 

 Enctp-tm aphidicorits Mayr, 1876 (1875). Zool.-Bot. Gesell. Wien, Verhandl. 25: 712-713, 



724. d, 9. 

 Eitpehints sclii:o)u'nme Ashmead, 1885. Amer. Ent. Soc, Trans. 12: Proc. p. xvi. 6, 9 



(under Enciirtus). 

 EHCyrfus apliidipliagiis Ashmead, 1887. U. S. Dept. Agr., Div. Ent., Bui. 14: 14. 9. 

 EncyriuH^ niegoiuae Ashmead, 1887. U. S. Dept. Agr., Div. Ent, Bui. 14: 19. 6, 9. 

 Encyrtiis Websferi Howard, 1890. U. S. Dept. Agr., Insect Life 2 (7-8): 247-248. 6, 9. 

 Microteri/s snbmetulicits Mercet, 1921. Fauna Iberica, Himen., Encirtidos, p. 354. Preocc. 



by Howard, 1896. 

 Syrphophagiis silcestri)ius Ghesquiere, 1956 Lab. Zool. Gen. e Agr. Portici, Bol. 33: 701. (n. 



name for subnietalicu.s Mercet). 

 Syrpliopliagna ))u>rceti Erdos, 1957. Folia Ent. Hungarica (n. s.) 10 (1): 45 (n. name for 



snbinetaliciis Mercet). 



Ta.xonomy: Gahan, 1924 (1923). Ent. Soc. Wash., Proc. 25 (9): 187-188. —Gahan, 1927. U. S. 

 Natl. Mus., Proc. 71 (4): 18. —Gahan, 1930. U. S. Natl. Mus., Proc. 77 (8): 6-7. —Mercet, 

 1932. Los paras, los ins. perjud. Barcelona, pp. 108-109. —Narayanan, 1941. Indian Jour. 

 Ent. 3 (1): 62. -Ferriere, 1961. Entomophaga 6 (1): 48-49. -Bakkendorf, 1965. Ent. 

 Meddel. 30 (2): 114-115. -Hoffer, 1965. Acta. Ent. Bohemoslov. 62 (2): 112-115. 



Biology: Pashchenko, 1961. Kazakh. Akad. Sel'sk. Nauk. Nauch. Inst. Zash. East., Trudy 6: 

 218. -Szalay-Marzso and Solymosy, 1961-1962. Acta Agron. (Budapest). 11 (3-4): 329-342. 

 — Akhvledinana, 1963. Akad. Nauk Gruzinskoi SSR, Soobshch, 30 (6): 781. —Hassan, 1963. 

 United Arab Repub. Min. Agr., Agr. Ext. Dept., p. 5. — Grigorov, 1964. Rast. Zashch. 12 

 (4): 32. — Sharma, 1965. Paris Univ. Facul. Sci. Theses, Ser. A, 4510, p. 109. — Radev, 1968. 

 Rast. Nauki (Sofia) 5 (10): 126. 

 lachni (Ashmead). Fla. Host: Cinara australi (Ashm.). 



Eupelmus lachni Ashmead, 1885. Amer. Ent. Soc, Trans. Proc. p. xvi. 9 (under 

 Encyrius). 



Taxonomy: Gahan, 1927. U. S. Natl. Mus., Proc 71 (4): 18. 



Genus AVETIANELLA Trjapitzin 



AvetianeUa Trjapitzin, 1968. Vses. Ent. Obshch., Trudy 52: 97-99. 



Type-species: AvetianeUa capnodiobia Trjapitzin. Orig. desig. 



An undetermined species has been taken in California on Piniis lanibertiana. 



Genus CERCHYSIUS Westwood 



Cerchysitm Westwood, 1832. London, Edinb. and Dublin Phil. Mag. and Jour. Sci. (3) 1: 127. 

 Type-species: Eiicyrtns iirocerus Dalman. Desig. by Westwood, 1840. The 

 type-species is considered a synonym of Eucyrtus subplanus Dalman. 



There are about twenty species of Cerchysius distributed throughout the world. Members of 

 the genus are probably parasites of Diptera. 



