Zopheridae

Definition

A family of beetles (Coleoptera) in the superfamily Tenebrionoidea, encompassing roughly 1,700 described species in six recognized subfamilies. The family has undergone substantial taxonomic expansion: historically restricted to the ironclad beetles (Zopherinae), it now includes the cylindrical bark beetles (Colydiinae), monommid beetles (Monommatinae), and several smaller lineages formerly treated as separate families. Members are typically saproxylic or mycophagous, with heavily sclerotized bodies and reduced flight wings. Zopheridae exemplifies ongoing debate in beetle classification regarding the rank and boundaries of constituent groups.

Etymology

From Zopherus (type genus, Greek zōphēros 'gloomy, dusky') + -idae (family suffix)

Example

The ironclad beetle Zopherus nodulosus (subfamily Zopherinae) can survive being run over by a car due to its fused, armor-like elytra, while the cylindrical bark beetle Cerylon unicolor (subfamily Colydiinae) inhabits decaying hardwoods.

Related Terms

• Colydiinae
• Zopherinae
• Tenebrionoidea
• Cucujiformia
• ironclad beetle
• cylindrical bark beetle
• saproxylic beetle

Usage Notes

Taxonomic circumscription remains unsettled: some authorities recognize up to six subfamilies, while others merge all except Colydiinae into an expanded Zopherinae. The family is not to be confused with Zopherus, the type genus. Formerly, Colydiidae and Monommatidae were treated as separate families; their inclusion makes Zopheridae morphologically heterogeneous.