Vespulid Wasps - Hibernation
Once the queen has mated she goes to find a dark, dry place to sleep for the winter. When the queens hibernate, they tuck their antennae neatly between their legs, and bite the substrate in order to hang on.
Hibernation uses up very little of their stored fat, and most queens survive this resting period. However, 99% of queens fail to establish nests the following spring. Some don't survive hibernation, but many die at the nest initiation stage when the queen has to work alone building and defending the nest as well as foraging for herself and the first developing larvae.