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Genus Overview
No genus-level description defined.
Characteristics
POLLUTION TOLERANCE
Southeast: 2.1 and higher
Upper Midwest: 2 and higher
Midwest: 1.3 and higher
Mid-Atlantic: 2 and higher
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Collector / Gatherer
MOVEMENT
Clinger
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Lotic-erosional
Diagnostic Characters
+ Expanded Character List
Order: Wings developing in wing pads. Mouthparts suitable for chewing. Gills present on tops and sides of abdomen. Segmented legs present. One tarsal claw per leg. Usually with 3 tails (sometimes 2).
Family: Gills on abdominal segment 1 rudimentary or absent. Abdominal segment 2 without gills. Gills on abdominal segments 3 (if present) and 4–7 have two layers: a top layer that is oval and plate-like and a bottom layer that is multi-lobed; in preserved specimens these gills lying in paired dorsal depressions and camouflaged, not readily seen by novices. Abdominal terga often with paired tubercles. Mature larvae 5–15 mm long, not including tails.
Genus: Not defined.