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Peltoperlidae
Roach-like Stoneflies
“Roachy” appearance
Thoracic sterna overlapping
Conical thoracic gills
Pteronarcyidae
Giant Stoneflies
Finely branched gill segments on thoracic and abdominal segments
Usually very large in size
Paraglossae and glossae equal
Perlidae
Common Stoneflies
Finely branched, tufted gills only present on thorax
Sometimes golden in color
Glossae shorter than paraglossae
Relatively large
Taeniopterygidae
Winter Stoneflies
Wingpads angled away from the midline of the body
Small, untufted gills
Tarsal segments equal
triangular plate present on ventral apex of abdomen
Small
