Where do flat bugs live and what do they eat?

Flat bugs, belonging to the family Aradidae, are small, dark-colored insects that typically inhabit obscure, protected environments. They are commonly found living under stones, in the crevices of dead or dying trees, or beneath loose bark. They generally remain in these hidden habitats and will only leave if environmental conditions become unsatisfactory.123

Regarding their diet, flat bugs feed on fungi and the sap found in decaying wood.1