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ON THE HABITS OF A JACK PINE NEEDLE-MINER, EUCORDYLEA CANUSELLA (LEPIDOPTERA: GELECHIIDAE), WITH SPECIAL REFERENCE TO ITS ASSOCIATION WITH A FUNGUS, AUREOBASIDIUM PULLULANS (MANILIALES (DEUTEROMYCETES) DEMATIACEAE)

Published online by Cambridge University Press:  31 May 2012

J. M. McLeod
J. M. McLeod
Affiliation:
Forest Research Laboratory, Department of Forestry and Rural Development, Quebec, Quebec
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Abstract

The unique habits of a jack pine needle-miner, Eucordylea canusella (Free.), are described. It feeds for the greater part of its life on dead or dying needle tissue and on the fungus Aureobasidium pullulans de Bary (Arnaud), which grows within the needle-pair following construction of a mine by the first-instar larva. On reaching maturity, the larvae revert to a more conventional needle-mining behaviour. This habit is unusual in defoliating Lepidoptera although other species in the same, or closely related genera, are also thought to feed upon fungi. The impact of these findings on the taxonomy of Eucordylea spp. is discussed.

Résumé

Description des habitudes sui generis de la Mineuse des aiguilles du Pin gris, Eucordylea canusella (Free.). Celle-ci subsiste en majeure partie du tissu mort ou étiolé des aiguilles, ainsi que du Champignon Aureobasidium pullulans de Bary (Arnaud) qui se développe dans une paire d’aiguilles où une galerie a été construite par la larvule. A maturité, le comportement de la chenille redevient plus conforme à celui d’une mineuse d’aiguilles. Une telle habitude n’est pas orthodoxe chez les Lépidoptères défoliateurs, quoique d’autres espèces du genre ou de genres très proches passent pour se nourrir elles aussi de Champignons. Suivent des considérations sur la taxonomie du genre, face aux données nouvelles.

Type
Articles
Information
The Canadian Entomologist , Volume 101 , Issue 2 , February 1969 , pp. 166 - 179
Copyright
Copyright © Entomological Society of Canada 1969

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References

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