Cucumber beetles, a threat to cucumbers and other vine crops, overwinter as adult beetles in debris, waiting for spring to return and fresh plants to appear. Many nuisance insects and insect relatives overwinter in sheltered areas and debris, such as under the siding of your house or in a pile of firewood. These include boxelder bugs, centipedes, earwigs, and millipedes. The Asian multicolored ladybug, which was so common back in October, is now most likely resting under siding or perhaps someplace inside the home. These types of insects may become active during warm spells of the winter months.
White grubs can be big problems on lawns in late summer and early fall.
The adult beetle will emerge late next spring to start the cycle over again. You don't readily see them, but some caterpillars overwinter on the host tree. But since early July the Eastern tent caterpillar has been an egg case on the twig of host tree, often a crabapple. The egg case will stay there all winter, with caterpillars hatching out and feeding as the trees leaf out again in spring. Finally, most of the insect borers that attack trees spend winter as a larva in trunk of host tree.