The Collaborative International Dictionary
Beetle mite
Beetle \Bee"tle\, n. [OE. bityl, bittle, AS. b[imac]tel, fr. b[imac]tan to bite. See Bite, v. t.] Any insect of the order Coleoptera, having four wings, the outer pair being stiff cases for covering the others when they are folded up. See Coleoptera.
Beetle mite (Zo["o]l.), one of many species of mites, of the family Oribatid[ae], parasitic on beetles.
Black beetle, the common large black cockroach ( Blatta orientalis).
Wiktionary
beetle mite
n. Any of many species of mites of the family (taxlink Oribatidae family noshow=1), parasitic on beetles.