TrichopteraHydroptilidae – Microcaddisflies

Hydroptila arctia

This record describes Hydroptila arctia (species). Recorded family: Hydroptilidae. Recorded order: Trichoptera.

Identification and Appearance

Hydroptila arctia - Hydroptila arctia
Contributed by Ken Schneider; Additional contributions by Mike Quinn

Would require specimen collection and microscopic examination, cannot be identified by color pattern (fide D Ruiter).

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Trichoptera (Caddisflies)
Suborder
Integripalpia
Superfamily
Hydroptiloidea
Family
Hydroptilidae (Microcaddisflies)
Subfamily
Hydroptilinae
Genus
Hydroptila

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

w. N. Amer. - Map , From Dave Ruiter: "quite common and widespread throughout the western US".

Additional species information

Species notes from the sources

Etymology: Hydroptila arctia Ross, 1938

About Caddisflies: the wider group

Order-level background for Trichoptera, the group containing Hydroptila arctia. Species-specific details appear above.

Group overview

Trichoptera (caddisflies) includes ~14,500 described species worldwide. Larvae are aquatic and build protective cases from silk, sand, pebbles, and plant material - each species creates a distinctive case design.

Ecological role of the group

Caddisfly larvae are critical food sources for trout and other freshwater fish, making them essential to recreational fishing industries worth billions annually. Their silk is being researched as an underwater adhesive for medical applications.

Economic and practical significance of the group

Caddisfly larvae are among the most important biological indicators of water quality. Their presence or absence in streams is used by the EPA and state agencies to assess pollution levels and ecosystem health.

Recorded sources for this group: EPA, freshwater ecology research. Imported estimates may describe particular regions or reporting periods.

Explore Trichoptera families and species →

Frequently Asked Questions About Hydroptila arctia

What is Hydroptila arctia?

Hydroptila arctia is a species in the family Hydroptilidae, within the order Trichoptera.

How do you identify Hydroptila arctia?

Would require specimen collection and microscopic examination, cannot be identified by color pattern (fide D Ruiter).

Where is Hydroptila arctia found?

Range: w. N. Amer. - Map , From Dave Ruiter: quite common and widespread throughout the western US.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Ken Schneider; Additional contributions by Mike Quinn. Contributors retain copyright over their individual contributions.