Walk through an alfalfa field this time of year and you are likely to find numerous insects at your feet. Many are beetles. With the economic importance of bean leaf beetles rising, it is vital that this beetle be correctly identified from other beetles, many of which can later be found in soybean as well.
Iowa State University
Bradshaw, Jeffrey and Rice, Marlin E., "Bean leaf beetles and others: correctly identifying the pest" (2003). Integrated Crop Management News. 1613.
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