Final-instar larvae of two hymenopterous parasites of a wood- boring beetle, <i>Tetropium velutinum</i> LeConte (Coleoptera: Cerambycidae)
Keywords:
<i>Tetropium velutinum</i>, parasite, Coleoptera, CerambycidaeAbstract
Characteristics of the cephalic structures, spiracles and skin of final-instar larvae of two hymenopterous parasites, <i>Helconidea occidentalis/<i> (Cress.) and <i>Rhimphoctona atrocoxalis</i> Ashm.), whose cocoons were found in galleries of the wood-boring beetle, <i>Tetropium velutinum</i> LeConte, are described and illustrated.References
Finlayson, T. 1960. Taxonomy of cocoons and puparia, and their contents, of Canadian parasites of Neodiprion sertifer (Geoff.) (Hymenoptera: Diprionidae). Can. Entomol. 92:20-47.
Finlayson, T. 1967. Taxonomy of final-instar larvae of the hymenopterous and dipterous parasites of Acrobasis spp. (Lepidoptera: Phycitidae) in the Ottawa region. Can. Entomol. 99: 1233-1271.
Ross, D.A. 1967 a. Wood- and bark-feeding Coleoptera of felled western larch in British Columbia. J. Entomol. Soc. British Columbia 64:23-24.
Ross, D.A. 1967 b. The western larch borer, Tetropium velutinum LeConte in interior British Colum bia. J. Entomol. Soc. British Columbia 64:25-28.
Short, J.R.T. 1952. The morphology of the head of larval Hymenoptera with special reference to the head of Ichneumonoidea, including a classification of the final instar larvae of the Braconidae. Trans. Roy. Entomol. Soc. London 103: 27-84.
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