Phalacridae

Definition

A family of small, oval beetles (Coleoptera) commonly known as shining flower beetles, typically 2 mm in length with tan or metallic coloration. Adults frequent composite flowers (Asteraceae), while most larvae and adults feed on fungal spores and hyphae; some species consume flower heads. The compact body and smooth, glossy cuticle distinguish them from similar flower-visiting beetles.

Etymology

From Greek phalakros (bald, smooth) + Latin -idae (family suffix), referring to the polished, hairless appearance.

Example

Phalacridae such as Olibrus spp. are common in daisy and sunflower heads, where they feed on powdery mildews and rust fungi while occasionally damaging developing florets.

Synonyms

• Shining flower beetles

Related Terms

• Coleoptera
• Cucujoidea
• Olibrus
• Asteraceae
• mycophagy
• flower beetle

Usage Notes

The family is placed in the superfamily Cucujoidea. Species-level identification requires examination of antennal club structure and male genitalia. The common name 'shining flower beetles' distinguishes them from the unrelated but ecologically similar 'flower beetles' of family Melyridae. Not to be confused with Phalacrocoracidae (cormorants, a bird family with similar etymology).