Michigan State University Extension
Michigan Soybean Information - 00000044
11/16/00
Bean Leaf Beetle (Cerotoma trifurcata)
List of files and visuals associated with this text.
Bean leaf beetles are about 1/4 inch long and yellow,
tan, or red in color with various black markings. They
are distinguished by a black triangular mark at the front
of the wing covers (Vis. 1). This beetle feeds on
foliage, blooms, small pods, and the outer layers of
older pods (Vis. 2). In addition to direct feeding
injury, the adults also transmit viral diseases which
reduce seed quality. Larvae feed on soybean roots and
nodules, but their economic significance is uncertain.
Bean leaf beetle occurs throughout the Midwest and South.
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This file was generated from data base S1 on 11/16/00.
Data base S1 was last revised on 11/16/00.
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