Molannidae

Definition

A family of caddisflies (order Trichoptera) commonly known as hood casemakers, characterized by larvae that construct distinctive portable cases with a hood-like anterior extension. The family comprises at least three genera and approximately 40 described species. Larvae typically inhabit lentic or slow-flowing lotic environments where they feed as detritivores or scrapers.

Etymology

From the type genus Molanna (origin uncertain, possibly related to Greek molos 'toil' or a proper name) + -idae (family suffix).

Example

Molannidae larvae differ from other caddisfly families by their uniquely shaped cases: the anterior hood can be closed to protect the larva when disturbed, a behavioral adaptation seen in genera such as Molanna and Molannodes.

Synonyms

• hood casemakers (common name)

Related Terms

• Trichoptera
• caddisfly
• case-making
• Molanna
• Molannodes
• Beraeidae
• Leptoceridae
• aquatic insect

Usage Notes

The family is sometimes overlooked in routine biomonitoring due to its relatively low diversity and restricted distribution compared to larger trichopteran families. Identification to genus relies on adult genitalia and larval case architecture; the hood structure is diagnostic but may be damaged in preserved specimens. Not to be confused with Molanninae, a subfamily-rank grouping used in some historical classifications.