Moisture and Diapause in the Wheat Stem Sawfly,Cephus cinctusNort. (Hymenoptera: Cephidae)
- 1 February 1955
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 87 (2) , 85-97
- https://doi.org/10.4039/ent8785-2
Abstract
Dryness of either an insect's habitat or its food has often been reported as inducing diapause. This has been well substantiated inPectinophora(8, 21, 22) andLoxostege(23). Also, a difference in body moisture between forms of the same species, in diapause and not in diapause, has been recorded inLeptinotarsa(9),Lucilia(11), andCarpocapsa(24), there being less water in the insects in diapause. It is significant, though, that in preparing for diapauseLeptinotarsaachieves a reduction in moisture content, even when there is an abundance of water outside, by excretion (4).Keywords
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