The beetle-like insect that hibernates in large groups during winter is the ladybug, also called a ladybird or ladybird beetle. Ladybugs belong to the beetle family Coccinellidae.
In temperate regions, adult ladybugs overwinter in sheltered places such as leaf litter, beneath bark, under rocks, in dense grass, and along forest edges. Many gather into clusters, which can help reduce exposure to cold and may improve survival in a stable microhabitat. Some species migrate to suitable wintering sites before becoming dormant.
Ladybugs prepare by feeding heavily during the warmer months. Predatory species normally eat aphids and other soft-bodied insects, but before winter they may also consume pollen, nectar, or fungal spores to build fat reserves. As temperatures rise in spring, the adults leave their shelters and resume feeding and reproduction.
The word hibernation is commonly used for ladybugs, although insect specialists may distinguish winter diapause from mammalian hibernation. That technical distinction does not change the quiz answer. Bees and ants can also overwinter socially, but the familiar beetle-like insect associated with large winter clusters is the ladybug.