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Genus Overview
This mayfly genus is widespread in North America. They are sprawlers and clingers in running water pools and margins (lotic-depositional streams) partially burrowing into silty bottoms and leaf litter, and feed by collecting or scraping organic matter.
Characteristics
POLLUTION TOLERANCE
Southeast: 1.4 and higher
Upper Midwest: 5 and higher
Mid-Atlantic: 4 and higher
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Collector / Gatherer
Scraper / Grazer
MOVEMENT
Clinger
Sprawler
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Media
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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: Short, broad mayfly; the top of the pronotum forms a shield over the rest of the thorax and the basal segments of the abdomen; this shield often has a prominent pair of lateral spines.
Genus: Not defined.