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Family Overview
This family includes 130 North American species and about 300 worldwide. This members of this family have a patterned head and thorax and often longitudinal black-and-yellow stripes on the abdomen, giving the nymphs the common name "Stripetails." Similar to other predators, the larvae of this group have paraglossae that are much longer than the glossae; however, some species in this group are also facultative shredders or collector-gatherers. They are often found clinging to the substrate, plants, or other materials in the stream. 
Characteristics
POLLUTION TOLERANCE
Mid-Atlantic: up to 2
Upper Midwest: 1 - 2
Southeast: 0 - 5.6
0 = least tolerant, 10 = most tolerant
FEEDING HABITS
Engulfer / Predator
MOVEMENT
Clinger
Diagnostic Characters
+ 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: Paraglossae and glossae about same length. Second tarsal segment of each leg about same length as first. Wing pads divergent, not parallel with body. Gills absent from thoracic and abdominal segments of eastern species. Hind legs do not reach end of abdomen. Tails are subequal to the length of abdomen or longer. Thoracic nota usually with distinct pigment pattern.