Hibernacula

The places in which an animal hibernates or overwinters; winter quarters (Morris 1992).
Found on http://imnh.isu.edu/digitalatlas/bio/glsry.htm

hibernacula

Caves or other structures used by bats for hibernation. ... (05 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

Hibernacula

Shelters occupied during the winter by dormant insects, i.e., spruce budworm larvae overwinter in hibernacula.
Found on http://www.fs.fed.us/r3/resources/health/field-guide/glossary.shtml
No exact match found