Beraeidae

Definition

A family of small caddisflies (order Trichoptera) characterized by reduced or absent wing venation, short antennae, and larvae that inhabit cold, clean, fast-flowing streams where they feed on periphyton and detritus. Adults typically have reduced mouthparts and do not feed.

Etymology

From the genus Beraea, the type genus of the family.

Example

Beraeidae larvae are sensitive indicators of stream health and are commonly used in biomonitoring programs to assess water quality in pristine mountain streams.

Related Terms

• Trichoptera
• caddisfly
• Beraea
• aquatic insect
• stream ecology
• biomonitoring
• periphyton

Usage Notes

Beraeidae is one of several families of 'microcaddisflies' or 'purse-case caddisflies' distinguished by their small size and simplified morphology. The family is sometimes grouped with other reduced-wing families in the superfamily Sericostomatoidea, though higher-level trichopteran phylogeny remains under revision. Larval cases are typically purse-shaped or saddle-shaped constructions of sand grains or plant material.