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DIURNAL BEHAVIOR OF THE APPLE BLOTCH LEAFMINER MOTH, PHYLLONORYCTER CRATAEGELLA (LEPIDOPTERA: GRACILLARIIDAE)

Published online by Cambridge University Press:  31 May 2012

Thomas A. Green  and
Ronald J. Prokopy
Thomas A. Green
Affiliation:
Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003
Ronald J. Prokopy
Affiliation:
Department of Entomology, University of Massachusetts, Amherst, Massachusetts, USA 01003
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Abstract

Observations of apple blotch leafminer moths, Phyllonorycter crataegella (Clemens), during daylight hours in commercial apple orchards in New England from 1982 through 1984 indicated a diurnal pattern of activity. Substantial flight in the morning, almost exclusively by males, was associated with mating, and lesser flight from midafternoon until darkness, predominantly by females, was associated with oviposition. Moths were comparatively inactive during midday hours, at which time they were located primarily on the lower third of the tree trunk during the first moth flight (overwintering generation moths), and on leaves during the second and third moth flights (first and second generation moths, respectively). Moths were concentrated at the inner half of the tree canopy during all three moth flights, and especially below 1.5 m height during the first moth flight.

Résumé

L’observation de la Mineuse-tache du pommier, Phyllonorycter crataegella (Clemens) dans des vergers de pommiers de la Nouvelle-Angleterre pendant les heures d’éclairement, de 1982 à 1984, a révélé que l’insecte a une activité surtout diurne. L’activité intense de vol le matin, presque exclusivement chez les mâles, est associée à la reproduction et la période moins intense de vol du milieu de l’après-midi jusqu’à l’obscurité, surtout chez les femelles, est associée à la ponte. Les papillons sont peu actifs au milieu de la journée et ils se tiennent surtout sur le tiers inférieur des troncs d’arbre pendant le premier vol (papillons de la génération qui hiverne), et sur les feuilles durant les deuxième et troisième vols (respectivement les papillons des première et deuxième générations). Les papillons se rassemblent dans la partie interne de la couverture de feuilles durant les trois périodes de vol, et surtout à moins de 1,5 m du sol au cours du premier vol.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 130 , Issue 4 , August 1998 , pp. 415 - 425
Copyright
Copyright © Entomological Society of Canada 1998

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