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It has been found possible to rear large numbers of codling moth larvae at any time during the year when larvae may be desired for laboratory tests. Larvae are collected from orchard trees by the usual banding methods. These are transferred to Mason jars containing a number of corrugated paper strips one-half inch wide and four to five inches in length. After the larvae have sought shelter in these strips they are placed in refrigeration or held outdoors at winter temperatures until spring and then placed in refrigeration at 50°F. and kept until needed. When newly hatched larvae are desired, the corrugated strips are placed in black emergence jars in an incubator held at a temperature of 8O-82°F. and humidity of approximately 70°. The adults after emergence are transferred to special stone oviposition jars with moist sand in the bottom and lined with waxed paper and an apple is placed on the sand. These jars are covered with cheese cloth and held at the above temperatures and humidity in a light approximating that of summer twilight. The adults readily oviposit on the paper on the sides and bottoms of these jars, or on apples placed in the jars, and have averaged about thirty eggs per female moth. After the papers are well covered with eggs they are cut into strips, placed in light proof tubes with a shell vial inserted in the side of the tube and held at ordinary room temperatures. The young larvae on hatching crawl into the vials and can then be readily transferred direct to the fruit. By following these methods it has been found possible to secure large numbers of codling moth larvae at any time during the year when they are desired.
Document Type: Research Article
Publication date: February 1, 1930
More about this publication?
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.