Explanation of Names
Phyllotreta denticornis Horn 1889
Elytra with only a narrow stripe, or, most commonly, two elongate spots each, or completely black. Dorsally coarsely punctate.
Male: antennal segments 4+5 strongly dilated; 6th with a spine on underside;
Female: antennal segment 5 longer (up to 1.5 times) than 6.