Paelobiidae

Definition

A family of aquatic beetles (Coleoptera: Adephaga) now treated as a synonym of Hygrobiidae. These small, oval beetles inhabit shallow, muddy freshwater habitats and are known for stridulatory sounds produced by rubbing the elytra against abdominal ridges—hence the common name 'squeak beetles' or 'screech-beetles'. The family-level name Paelobiidae has been used historically and appears in some taxonomic databases, though current classifications recognize Hygrobiidae as the valid family name with Hygrobia as its sole genus.

Etymology

From Greek pailos (mud, ooze) + bios (life) + -idae (family suffix), alluding to their muddy habitat.

Example

Specimens identified in older collections under Paelobiidae should be reclassified under Hygrobiidae, with the genus Hygrobia containing species such as H. hermanni in Europe and H. australis in Australia.

Synonyms

• Hygrobiidae

Related Terms

• Hygrobiidae
• Hygrobia
• Adephaga
• stridulation
• aquatic Coleoptera

Usage Notes

Paelobiidae is a nomenclatural synonym; specialists now use Hygrobiidae. The name persists in some databases and historical literature. Not to be confused with similarly named families in other orders.