“Riffle Beetles”
Genus Overview
This genus is represented as one species in North America. There are several species known across the globe as "Spider Riffle Beetles" because of their long legs. They are univoltine with six instars.
Characteristics
POLLUTION TOLERANCE
Southeast: 6.9 and higher
Upper Midwest: 6 and higher
Midwest: 4 and higher
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Collector / Gatherer
Scraper / Grazer
Scraper / Grazer
MOVEMENT
Clinger
Sprawler
Sprawler
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Lotic-erosional
Lotic-erosional
Diagnostic Characters
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