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3 January 2019 Evaluation of Mexican Bean Beetle (Coleoptera: Coccinellidae) Host Selection, Survival, and Feeding Injury Among Snap Bean and Lima Bean Cultivars
Louis B. Nottingham, Thomas P. Kuhar
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Abstract

Mexican bean beetle, Epilachna varivestis Mulsant (Coleoptera: Coccinellidae), is a serious pest of snap bean, Phaseolus vulgaris L. (Fabales: Fabaceae), lima bean, Phaseolus lunatus L. (Fabales: Fabaceae), and an occasional pest of soybean, Glycine max (L.) Merr. (Fabales: Fabaceae), in the United States. Past research indicates that some bean cultivars endure greater injury from this pest than others, suggesting that such crops are either more preferred, better hosts, and/or have poorer defenses. This study characterizes injury potential among three snap bean and three lima bean cultivars by measuring ovipositional preference, survival, and feeding injury of E. varivestis in field and greenhouse experiments. Snap beans, as a group, were more preferred and susceptible to injury than lima beans. The purple wax snap bean, Dragon's Tongue, was the most susceptible overall; while the dwarf bush lima bean, Henderson, was the least susceptible. The results of this study will aid in the development of integrated pest management strategies for E. varivestis, while also providing broader biological information for future research on this pest and others.

© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Louis B. Nottingham and Thomas P. Kuhar "Evaluation of Mexican Bean Beetle (Coleoptera: Coccinellidae) Host Selection, Survival, and Feeding Injury Among Snap Bean and Lima Bean Cultivars," Journal of Economic Entomology 112(2), 736-744, (3 January 2019). https://doi.org/10.1093/jee/toy391
Received: 10 September 2018; Accepted: 21 November 2018; Published: 3 January 2019
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KEYWORDS
BIOLOGY
Epilachna
host preference
Snap bean
trap crop
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