Author： SOLOMON J. D.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.68, Iss.2, 1975-03, pp. : 325-328
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Abstract
By tunneling in the trunks of green ash and other species of Oleaceae, larvae of Podosesia syringae (Harris) damage trees grown for timber and ornamental purposes. Open-grown trees are more heavily infested than those in dense stands. Life history studies revealed that moth emergence is heaviest during spring and occurs earliest from stems of smallest diameter. Females call, mate, and begin ovipositing on the day of emergence. They deposit ca. 400 eggs, mostly during the first 2 days. Larval galleries extend inward in the sapwood, then turn upward and back to the surface; they range from 7 to 32 cm in length. Woodpeckers, most important of the natural enemies, captured 67–81 % of the larvae in a young stand.
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