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THE ESTABLISHMENT OF LOPHYROPLECTUS LUTEATOR (HYMENOPTERA: ICHNEUMONIDAE) ON NEODIPRION SERTIFER (HYMENOPTERA: DIPRIONIDAE) IN ONTARIO

Published online by Cambridge University Press:  31 May 2012

K. J. Griffiths  and
L. A. Lyons
K. J. Griffiths
Affiliation:
Forest Research Laboratory, Department of Forestry and Rural Development, Sault Ste. Marie, Ontario
L. A. Lyons
Affiliation:
Forest Research Laboratory, Department of Forestry and Rural Development, Sault Ste. Marie, Ontario
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Abstract

Lophyroplectus luteator (Thunb.), a European ichneumonid, was liberated in three Neodiprion sertifer-infested plantations in southern Ontario. Following one introduction in 1962, the parasite has survived 4 years and has spread at least 1.4 mites. Six per cent of the hosts collected within the plantation in 1966 produced adult parasites. Another smaller introduction in 1962 was unsuccessful. Following the third introduction, made in 1964, the parasite has survived 2 years and the attack level is now nearly 9 per cent.

Résumé

Ichneumonidée originaire d’Europe, Lophyroplectus luteator (Thunb.), a été introduit en 1962 dans trois plantations infestées par la Tenthrède du Pin d’Écosse (Neodiprion sertifer (Geoff.)) dans le sud de l’Ontario. Quatre années plus tard, le parasite avait pu survivre et se répandre à 1.4 mille au moins. Ses imagos s’étaient développés sut 6 p. 100 des hôtes (échantillonnés en 1966) dans l’aire de l’expérience. Une autre introduction de moindre importance entreprise en 1962 n’avait pas eu de succès. A la suite d’une troisième réalisée en 1964, le parasite a bien survécu et en 1966, ses larves ont atteint 9 p. 100 des Tenrhrèdes.

Type
Articles
Information
The Canadian Entomologist , Volume 100 , Issue 10 , October 1968 , pp. 1095 - 1099
Copyright
Copyright © Entomological Society of Canada 1968

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References

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