order
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Coleoptera
“Adult Beetles”
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Coleoptera
“Larval Beetles”
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Diptera
“True Flies”
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Ephemeroptera
“Mayflies”
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Hemiptera
“True Bugs”
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Lepidoptera
“Aquatic Caterpillars, Snout Moths”
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Megaloptera
“Alderflies, Dobsonflies, and Fishflies”
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Odonata
“Dragonflies and Damselflies”
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Plecoptera
“Stoneflies”
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Trichoptera
“Caddisflies”
family
Potamanthidae
genus
Anthopotamus
“Hackle-gills”
Genus Overview
4 species in North America. Species identification requires mature larvae with large tusks. This is the only genus in the family, Potamanthidae.
Characteristics
POLLUTION TOLERANCE
Southeast: 1.6 and higher
Upper Midwest: 4 and higher
Midwest: 3.2 and higher
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Collector / Filterer
MOVEMENT
Burrower
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Diagnostic Characters
order
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Abdominal Gills
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Single Tarsal Claw
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Usually 3 Tails
family
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Gills on 2-7 Forked, Long, Projecting Laterad
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Legs Slender
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Long Tusks
+ 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:
Long slender mayfly with its gills long, forked, marginally fringed, and projecting laterad; pair of sharp tusks projecting beyond head; the legs are not unusually thick and flattened for digging.
Genus:
Flat bodied, long prothoracic legs, tusks are flatten
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Dorsal
Ventral