dermestid
noun
der·mes·tid (ˌ)dər-ˈme-stəd 
: any of a family (Dermestidae) of beetles with clubbed antennae that are very destructive to organic material of animal origin (such as dried meat, wool, or museum specimens)
dermestid adjective
Example Sentences
Recent Examples on the Web Then the cleaning crew dries the skulls for a few days before putting them in a colony of dermestid beetles, which will eat off the rest of the fleshy bits. 
National Geographic, 23 Aug. 2016
National Geographic, 23 Aug. 2016 Word History
Etymology
ultimately from Greek dermēstēs, a leather-eating worm, literally, skin eater, from derm- + edmenai to eat — more at eat
First Known Use
circa 1888, in the meaning defined above