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LABORATORY STUDIES ON PERISTENUS PALLIPES AND P. PSEUDOPALLIPES (HYMENOPTERA: BRACONIDAE), PARASITOIDS OF THE TARNISHED PLANT BUG, LYGUS LINEOLARIS (HEMIPTERA: MIRIDAE)1

Published online by Cambridge University Press:  31 May 2012

K. P. Lim
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec
R. K. Stewart
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec

Abstract

Development of P. pallipes, from egg to emerged larva, in the tarnished plant bug lasts 24.49 ± 2.38 days at 25 °C/16 h and 20 °C/8 h and 77 ± 5% R.H. with 16 h illumination.

Eggs of P. pseudopallipes need 72–96 h to hatch under the above-cited regime. At least three distinct larval stages can be recognized without special staining procedures. The first instar larva is a caudate-mandibulate type. The second larval stage is acaudate and lives in the host haemocoele. The third larval stage is also acaudate and emerges from the host. The pupa is an exarate type diapausing in a cocoon. P. pseudopallipes is an arrhenotokous species. The longevity of the adults in the laboratory is about 16 days. The adult oviposits into the host abdomen.

Survival of diapausing pupae is better at 16 h photophase than at 8 h photophase.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1976

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