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Destructive species (Lema trilineata) of leaf beetle (family Chrysomelidae). Less than 0.25 in. (6 mm) long, it is yellow and has three black stripes on its wing covers. Eggs are laid on the underside of a potato leaf, on which both larvae and adults feed. The larvae are camouflaged by excrement the beetles pile on their back. Two generations are produced each year; the second overwinters in the ground in the pupal stage. See alsoColorado potato beetle.
This entry comes from Encyclopædia Britannica Concise. For the full entry on potato beetle, visit Britannica.com.