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“Microcaddisflies, Purse Casemakers”
Genus Overview
No genus-level description defined.
Characteristics
POLLUTION TOLERANCE
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Piercer / Herbivore
Scraper / Grazer
MOVEMENT
Clinger
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Lotic-erosional
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Diagnostic Characters
+ Expanded Character List
Order: Larvae: Wings/wing pads absent. Eye spots present, but compound eyes absent. Antennae usually small, inconspicuous. Three pairs of segmented legs present on thorax. Pair of anal prolegs, each with single hook, located on last abdominal segment. Larvae can be free-living, in silken retreats attached to substrate, or in usually-portable tubes or cases made of sand, rocks, or plant material.
Family: The larva is very small (less than ¼ inch) and lives in a case, usually flat, made of silk or sand or filamentous algae; the tops of all three thoracic segments are covered by sclerites; there are no gills on the ventral side of the abdomen; usually the anal prolegs are mostly fused with the end of the abdomen except their apical hooks.
Genus: Not defined.