The activities of the Mexican bean beetle (Epitachnu corruptaMuls) in South Carolina during the year 1925 arc reported. Extreme drouth prevailed so activities were more limited than in previous years. Cage and field emergence studies showed that emergence of adults assuming normal feeding and breeding activities occurred during May and June. Fourteen and two-tenths per cent of the adults emerged from the hibernation cage. One generation developed and all the adults died before the period for hibernation arrived. A second generation developed, many of the adult females laid eggs during a short period, and then the majority of the adults went into hibernation. A small number of third generation beetles developed and went into hibernation. A very few females of the third generation produced eggs; A few individuals of the fourth generation appeared but produced no eggs. Host plants, during the spring and summer, were chiefly string or snap beans and to a lesser extent lima beans. September and October they were found developing on cowpeas just before going into hibernation. Many larvae in the first and second instar died in August from what appeared to be a bacterial disease. The ladybird beetle, usually called Megilla maculatadestroyed portions of many egg groups.
Document Type: Research Article
Publication date: April 1, 1926
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.