The Development and Reproduction of Bedellia somnulentella on Hedge Bindweed and Sweet Potato

Publisher： Entomological Society of America

ISSN： 1938-2901

Source： Annals of the Entomological Society of America, Vol.70, Iss.6, 1977-11, pp. : 925-928

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Abstract

Bedellia somnulentella (Z.) is a leaf miner found on hedge bindweed (Convolvulus sepium L.) in southwestern Virginia from Sept. through Oct. Females maintained at 23.9°C laid an average of 169 eggs, most of them within the 1st 8 days of oviposition. At this temperature, the egg stage averaged 4.5 days with 98.0% hatch, and larval and pupal duration were 13.2 and 5.6 days, respectively. Mean development period from egg to adult was 23.3 days at 23.9° C. Successful completion of the larval stage at this temperature was 98.0%, but only 4.6% at 29.4°C. Adult longevity averaged 22 days for the female and 26 days for the male. Fecundity decreased with increasing sex ratio; ranging from 280 eggs/female at 0.25 (♂/♀) to 110 at 1.25. Four out of 84 field-collected larvae were parasitized by Apanteles bedelliae Vier. No difference was found in the rate of development of B. somnulentella on 9 varieties of sweet potato.