Namamyia plutonis

Larvae are distinguished from other caddisfly families by their case architecture: cases are curved, tapering, and composed of sand grains arranged in a spiral or coiled pattern, unlike the straight or four-sided cases of related families. Adults require examination of genitalia for definitive identification; they lack the distinctive wing markings found in some other odontocerid genera.

Adults have the general form typical of Odontoceridae: elongated body, long filiform antennae approximately equal to body length, and two pairs of hairy membranous wings held roof-like over the body at rest. Coloration is generally dull brown to gray. Larvae construct portable cases from sand grains and small mineral particles, cemented together with silk in a distinctive curved or spiral form.

Larvae inhabit cool, clear streams and rivers with moderate current. They are typically found on submerged rocks and woody debris in well-oxygenated water. Specific microhabitat preferences within the stream environment are not well documented.

Recorded from North America, specifically within the Nearctic region. Distribution records are sparse and likely incomplete due to limited sampling effort.

Larvae are presumed to be detritivores or grazers, feeding on periphyton and organic matter on submerged surfaces, as is typical for the family. Specific dietary observations have not been published.

Complete metamorphosis with egg, larva, pupa, and adult stages. Larval development occurs entirely in aquatic environments. Pupation takes place within a modified case attached to substrate. Adult emergence timing is undocumented.

Larvae are sessile within their cases, extending the head and thorax to feed. Cases provide protection and camouflage. Adults are weak fliers and likely nocturnal, though specific behavioral observations are lacking.

Larvae contribute to nutrient cycling in stream ecosystems through processing of organic matter and periphyton. They serve as prey for fish and other aquatic predators. The family Odontoceridae is generally considered indicative of good water quality, though species-specific tolerance values are unavailable.

No direct economic importance. Occasionally encountered in biomonitoring programs assessing stream health, though not among the most commonly sampled caddisfly taxa.

• Other Odontoceridae genera (e.g., Psilotreta, Triaenodes)Share similar adult morphology and larval case construction from mineral particles; distinguished by case shape (Psilotreta cases are four-sided, Triaenodes cases are straight and cylindrical) and genitalia structure
• GoeridaeLarvae also construct mineral cases; distinguished by case morphology and head capsule sclerotization patterns

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life