Roly poly bug的意思

"Roly poly bug" is a common name for several different types of insects, but it is most often used to refer to members of the order Polyphaga, which includes the beetles. Specifically, it is used for the family Geotrupidae, which are a group of large, cylindrical beetles that can roll up into a ball when threatened. These insects are also known as "dung beetles" because they feed on animal dung.

The name "roly poly bug" comes from the insect's ability to roll up into a ball, much like a pillbug (also known as a sowbug) does. However, pillbugs are not actually insects, but rather crustaceans that belong to the order Isopoda.

In some regions, "roly poly bug" may also be used to refer to other types of beetles or even other insects that have the ability to roll up into a ball, such as certain species of caterpillars.