Not all insects are inactive in winter in the temperate zone. In areas with snow cover, there are insect species adapted to life on top of the snow such as Snow Fleas (Collembola) and other species adapted to sub-nivean habitats or life underneath the snow.
Jaskuła & Soszyńska-Maj* list 79 species of ground beetles (Carabadae) that remain active under the snow pack. These beetles have adaptations to prevent their bodies from freezing at low temperatures. They are not frozen…
Source: Living With Insects Blog