description Bean Leaf Beetle Overview
The bean leaf beetle (Cerotoma trifurcata) is a leaf beetle in the family Chrysomelidae native to North America and one of the most significant insect pests of soybean crops in the United States. Adults chew round holes in leaves and scar developing pods, while larvae feed on roots and nitrogen-fixing root nodules underground. The beetle is also an important vector of bean pod mottle virus, which further reduces yield and seed quality, making it a persistent concern for soybean growers.
help Bean Leaf Beetle FAQ
What is the scientific name of the bean leaf beetle?
The bean leaf beetle is Cerotoma trifurcata. It is a member of the leaf beetle family Chrysomelidae and is native to North America.
What damage does the bean leaf beetle cause to soybeans?
Adults chew round holes in soybean leaves and can scar developing pods. The larvae feed on roots, so damage can occur both above and below ground.
Why is the bean leaf beetle important to soybean growers?
It is one of the significant insect pests of soybean crops in the United States. Feeding can reduce leaf area and damage pods, while beetles may also contribute to disease spread in some production regions.
What life stages feed on soybean plants?
Adult bean leaf beetles feed on leaves and pods, while the larval stage feeds on roots. This two-stage feeding pattern makes the pest relevant throughout different parts of the soybean growing season.
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