order
Coleoptera
“Adult Beetles”
Coleoptera
“Larval Beetles”
Diptera
“True Flies”
Ephemeroptera
“Mayflies”
Hemiptera
“True Bugs”
Lepidoptera
“Aquatic Caterpillars, Snout Moths”
Megaloptera
“Alderflies, Dobsonflies, and Fishflies”
Odonata
“Dragonflies and Damselflies”
Plecoptera
“Stoneflies”
Trichoptera
“Caddisflies”
family
Capniidae
genus
Allocapnia
“Small Winter Stoneflies”
Genus Overview
A very diverse genus with about 43 species, most of which the nymph stage of most are undescribed. Some species have been found to diapause in the summer months in the hyporheic zone.
Characteristics
POLLUTION TOLERANCE
Southeast: 2.8
Upper Midwest: 3
Mid-Atlantic: 3
FEEDING HABITS
Shredder / Detritivore
MOVEMENT
Clinger
DISTRIBUTION
Widespread (east of the Rocky Mtns.)
HABITAT
Lotic-depositional
Lotic-erosional
Lotic-erosional
Diagnostic Characters
Order
Two Tails
Two Tarsal Claws
Family
Gills Absent
Hind Legs Don't Reach
Membranous Pleural Fold
Paraglossae And Glossae Subequal
Small Postmentum
+ Expanded Character List
Order:
Wings developing in wing pads. Mouthparts suitable for chewing. Gills digitiform and located near mouthparts, on neck, sides of thorax, or underside of base of abdomen, never on top or sides of abdomen. Two tarsal claws per leg. Only two tails (cerci).
Family:
The body is small (~1/4 inch) and slender and without gills; the hind legs do not reach the end of the abdomen; the wing pads are about as long as wide; the abdomen is a little wider in the middle than at it anterior base.
Genus:
metathorax wingpads truncated, cerci without well-developed fringe
Dorsal
Lateral
Ventral