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Sampling and Distribution of Summer Eye-spotted Bud Moth Spilonota ocellana (D. & S.), Larvae and Nests on Apple Trees1

Published online by Cambridge University Press:  31 May 2012

E. Fred Legner  and
Earl R. Oatman
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Extract

Summer larvae of the eye-spotted bud moth, Spilonota ocellana (D. and S.), appeared in unequal densities on certain portions of apple trees in Door County, Wisconsin. The resulting non-random distribution introduced a bias in data obtained of the summer larvae. This phenomenon has been reported in Quebec apple orchards (LeRoux and Reimer, 1959) where densities of summer larvae were consistently greater in the upper than in the lower tree levels, and quadrant differences often occurred in the number of eggs parasitized, spring and summer larval shelters, and pupal shelters. The present study was initiated to determine the extent of the uneven distribution of summer eye-spotted bud moth larvae and nests on young, non-bearing apple trees. Summer larvae appear shortly after the first of August when eggs begin to hatch (Oatman, 1960).

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 11 , November 1962 , pp. 1187 - 1189
Copyright
Copyright © Entomological Society of Canada 1962

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References

Legner, E. Fred and Oatman, Earl R.. 1962. Foliage-feeding Lepidoptera on young, non-bearing apple trees in Wisconsin. Jour. Econ. Ent. 55: 552–554.CrossRefGoogle Scholar
LeRoux, E. J. and Reimer, C.. 1959. Variations between samples of immature stages and of mortalities from some factors, of the eye-spotted bud moth, Spilonota ocellana (D. and S.) (Lepidoptera: Olethreutidae), and the pistol casebearer, Coleophora cerratella (L.) (Lepidoptera: Coleophoridae), on apple in Quebec. Canad. Ent. 91: 428–449.CrossRefGoogle Scholar
Oatman, Earl R. 1960. Wisconsin apple insects. Univ. of Wis. Agr. Expt. Sta. Bull. 548: 29 p.Google Scholar