Uenoidae

Iwata, 1927

Stonecase Caddisflies

Genus Guides

is a of caddisflies (Trichoptera) commonly known as stonecase caddisflies. The family comprises approximately 7 and at least 80 described , distributed across North America, Asia, and Europe. Larvae construct portable cases using mineral materials, hence the . The family was revised taxonomically in 1988 to include the Uenoinae and Thremmatinae, incorporating genera formerly placed in separate families. Studies of Neophylax species demonstrate with temporal segregation between co-occurring species.

Neophylax oligius by (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block. Used under a CC-BY license.

Neophylax by no rights reserved, uploaded by nmacelko2. Used under a CC0 license.

Pronunciation

How to pronounce Uenoidae: /juˈɛnɔaɪdiː/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Larvae identified by their mineral-constructed cases. distinguished from other caddisfly by genitalic characters, particularly structures of segment X and sternum IX. Keys exist for adults of Farula and Neothremma incorporating diagnostic characters.

Images

Habitat

Larvae inhabit running water environments, primarily streams and rivers. Specific microhabitat preferences vary by : some occupy faster-flowing, deeper microhabitats while others prefer slower-flowing, shallower areas. Co-occurring species may partition longitudinally along stream gradients.

Distribution

Holarctic distribution spanning North America, Asia (Japan, China), and Europe. Documented from Japan (Akigawa River, Tama River system), northern California streams, Tennessee (USA), Vermont (USA), and southeastern Europe.

Seasonality

timing varies by and latitude. In Japanese streams, Neophylax japonicus adults emerge in October, while N. koizumii emerges one month later. Where species co-occur, emergence periods may be separated by 6 months.

Life Cycle

() documented in multiple . Larval development spans most of the year with temporal segregation between co-occurring . Pre-pupal and pupal stages together occupy more than half of the total life cycle in some species. First-instar larvae appear in late autumn to winter depending on species.

Behavior

Larvae exhibit gregarious during pre-pupal and pupal stages. Temporal segregation in larval, pupal, and periods occurs between co-occurring , with partial overlap in larval and pre-pupal stages.

Similar Taxa

LimnephilidaeHistorically, some were classified as Neophylacinae within Limnephilidae; revised phylogenetic analysis supports separate status for Uenoidae.
ThremmatidaeFormerly recognized as separate ; now included within as Thremmatinae based on cladistic analysis.

More Details

Taxonomic revision

The was revised by Weaver (1988) to include two : Uenoinae (Uenoa, Sericostriata, Neothremma, Farula) and Thremmatinae (Thremma, Neophylax, Oligophlebodes). This classification has predictive value for and .