The Spotted Cucumber Beetle is a bright greenish-yellow beetle with 12 black spots on its elytra, making it resemble a large ladybug. It is a serious agricultural pest as both adult and larva (the corn rootworm), attacking cucurbits, corn, and many other crops. It also vectors bacterial wilt disease in cucumbers and squash.
Best time to see a Spotted Cucumber Beetle
The best time to see a Spotted Cucumber Beetle is June–October, when about 64% of U.S. sightings happen, based on 58,338 research-grade iNaturalist observations.
Not certain it is a Spotted Cucumber Beetle? What bug is this? walks through what to check first and the lookalikes that catch people out.
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