Genus Overview
14 species in North America. Larvae are found in gravel along larger rivers generally near the shore.
Characteristics
POLLUTION TOLERANCE
Southeast: 5.5 and higher
Midwest: 3.7 and higher
Mid-Atlantic: 4 and higher
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Engulfer / Predator
MOVEMENT
Climber
Swimmer
Swimmer
DISTRIBUTION
Southeast
HABITAT
Lentic-littoral
Lotic-depositional
Lotic-depositional
Diagnostic Characters