The Collaborative International Dictionary of English v.0.48:

Anthrenus \An*thre"nus\ ([a^]n*thr[=e]"n[u^]s), n. [NL., fr. Gr.
   'anqrh`nh a hornet.] (Zool.)
   A genus of small beetles, several of which, in the larval
   state, are very destructive to woolen goods, fur, etc. The
   common "museum pest" is Anthrenus varius; the carpet beetle
   is Anthrenus scrophulari[ae]. The larv[ae] are commonly
   confounded with moths.
   [1913 Webster] Anthropic