Author： BATZER HAROLD O. ADDY NORTON D.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.64, Iss.5, 1971-09, pp. : 1185-1186
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Abstract
Late-stage larvae of the genus Choristoneura drop readily from their host trees when disturbed. This phenomenon has been discussed for the spruce budworm by Craighead (1924), Wellington and Henson (1947), and Morris and Mott (1963). Some larvae are able to return to the tree crowns, but many are lost to predators or are unable to reestablish on suitable host plants. Larvae of the jack pine budworm, C. pinus pinus Freeman, exhibit similar behavior (Jennings 1971). If a large proportion of the larvae can be stimulated to drop from the host trees, and if few are able to return, the dropping behavior may be used advantageously to reduce populations. This note reports information on return of larvae from the ground to overstory jack pines.
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