spotted cucumber beetle

insect

Also known as: Diabrotica undecimpunctata

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Last updated

July 14, 2026

Quick Summary

The spotted cucumber beetle (Diabrotica undecimpunctata howardi) is a greenish-yellow beetle, about 2.5 to 11 mm long, marked with black spots. It is considered an important pest.12

Adults feed on various ornamental and crop plants, including cucumbers and squashes, while their larvae feed on roots. The spotted cucumber beetle is also a vector for wilt disease, particularly in cucumbers and melons. This insect belongs to the subfamily Galerucinae within the family Chrysomelidae.123

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cucumber beetle
…wing cover (elytron), and the spotted cucumber beetle (D. undecimpunctata) has black spots on each wing cover. They both feed on garden plants, and their larvae feed on the roots. The green-colored D. longicornis eats corn pollen and silk; the root-feeding larvae are known as corn rootworms.
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…wing cover (elytron), and the spotted cucumber beetle (D. undecimpunctata) has black spots on each wing cover. They both feed on garden plants, and their larvae feed on the roots. The green-colored D. longicornis eats corn pollen and silk; the root-feeding larvae are known as corn rootworms.
Read More