RECORDS OF APHIDS AND THEIR FOOD PLANTS, PARASITOIDS AND HYPERPARASITOIDS FROM NORTH BIHAR

During the extensive survey in different localities of few districts o f north Bihar viz., Begusarai, Khagaria, Mansi, Samastipur etc., 15 sp ecies of aphids were recorded on several kinds of food plants viz., Ap his craccivora Koch, A. gossypii Glover; A. nasturtii Kaltenbach, A. n erii B. d. Fonsc., Hyalopterus pruni (Geoffroy), Melanaphis sacchari ( Zehnter), Rhopalosiphum maidis(Fitch), Schizaphis graminum (Rondani), Acrythosiphon pisum (Harris), Brevicoryne brassicae (Linnaeus), Lipaph is erysimi (Kaltenbach), Macrosiphoniella sanborni(Gillette), Macrosip hum miscanthi Takahashi, Myzus persicae (Sulzer), and Greenidea formos nana heeri Raychaudhuri et al. Among these, half of the species viz., A. craccovora, A. gossypii, M, sacchari, R. maidis, S, graminum, L. er ysimi, M. miscanthi and M. persicae were found abundantly in most of t he localities and may be considered as pest. Out of the above, A. crac civora, A. gossypii, R, maidisand L. erysimiseverely infested Dolichos lablab, Lagenaria vulgaris, Pennisetum glaucum and Brassica campestri s, respectively. On rest of the food plants little to moderate infesta tion was observed by one or more species of the aphids. During the sur vey 7 species of parasitoids viz., Aphelinus gossypiiTimberlake Aphidi us colemaniViereck, Aphidius matricariae Haliday, Aphidius uzbekistani cus Luzhetzki, Diaeretiella rapae(McIntosh), Lipolexis scutellaris Mac kauer and Trioxys indicus Subba Rao & Sharma were recorded on differen t aphid host. Two species of hyperparasitoids viz., Alloxysta pleurali s (Cameron) and Phaenoglyphis sp. were recorded on T. indicusonly.