Oriental fruit moth eggs are obtained in a greenhouse incubator regulated to 75º to 80ºF. at sundown. Green apples obtained in orchards at thinning time are used for feeding larvae. Hibernation is prevented by bringing all stock indoors in August and breeding at 75º or above. Nearly a million and a half fruit moth eggs were obtained in 1932. Optimum air conditions for Macrocentrus Ancylivorus are considered to be 70 to 75ºF. and 40 to 80 per cent relative humidity. Methods of handling have considerable influence on the sex ratio. Host larvae five days old at 80ºF. are used for exposure to parasites. Successful hibernation of Macro-centrus is not fully solved, but about 36,000 were bred in 1932. The general procedure is given.
Document Type: Research Article
Publication date: April 1, 1933
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.