How to Tell the Gender of a Ten-Lined June Beetle

Print pictures of the male and female beetles, available online, so as to have a visual reference. Choose pictures that show the antennae of each insect clearly. These pictures do not need to be in color.

Note whether the beetle is attracted to lights. A ten-lined June beetle flying around a lamp in the evening is most likely to be a male.

Catch the beetle in a net and transfer it to a transparent glass or plastic tub.

Examine the beetle's antennae. The antennae of the male ten-lined June beetle are significantly larger than those of the female. On the male they look like thick, crooked clubs. On the female, they are relatively small, thin and unobtrusive.