Japanese Journal of Applied Entomology and Zoology
Online ISSN : 1347-6068
Print ISSN : 0021-4914
ISSN-L : 0021-4914
Defoliation and Developmental Velocity of Larvae of the Red-Headed Spruce Web-Spinning Sawfly, Cephalcia isshikii TAKEUCHI (Hymenoptera: Pamphiliidae)
Naliaki YOSHIDA, Kaoru MAETÔ
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1988 Volume 32 Issue 4 Pages 324-327

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Abstract
The total dry weight of leaves of Picea spp. defoliated by a larva of C. isshikii was estimated at 1.4g. The theoretical developmental zero and the total effective temperature for the feeding period of the larvae were 7.2°C and 271.7 day-degree, respectively.
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© by The Japanese Society of Applied Entomology and Zoology
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