The scientific name for this order of insects is Plecoptera, which in Latin
means “braided wing.” The wings of adults have numerous veins, making
them appear braided. Stoneflies, as you can guess, live in habitats
with plenty of stones. They prefer fast-moving, clear streams with a bottom
of rocks and stones. Small mountain brooks and large streams in wooded
areas usually have plenty of this type of habitat, and often many stoneflies.
Stoneflies, like mayflies, have incomplete metamorphosis. The stages
of incomplete metamorphosis include egg, nymph and adult, or “ENA.”
Tioga County Stones
     Pa Stoneflys
Pygmy Snowfly - Allocapnia pygmaea
            Area: Ansonia

Eastern Snowfly - Allocapnia recta
     Area: E. Tioga River
Woodlands Sallfly - Alloperla petasata
Area: Blossburg on US Rt. 15

York Sallfly - Suwallia marginata
Area: Blossburg on US Rt. 15
Area: nr Ansonia

Curved Sallfly - Sweltsa lateralis
Area: nr Ansonia

Ontario Sallfly - Sweltsa onkos
Area: nr mouth Morris (Morris Quad)
Area: nr Ansonia
Area: Blossburg on US Rt. 15
Atlantic Needlefly - Leuctra duplicata
Area: Blossburg on US Rt. 15

Eastern Needlefly - Leuctra ferruginea
     Area: Blossburg on US Rt. 15

Narrow-lobed Needlefly - Leuctra tenuis
Area: nr Ansonia
Eastern Forestfly - Amphinemura delosa
Area: Blossburg on US Rt. 15

Spiked Forestfly - Amphinemura wui
Area: Blossburg on US Rt. 15

Bent Forestfly - Ostrocerca prolongata
Area: trib. Pine Creek nr Morris

Prostoia completa (no common name)
Area: Blackwell on PA Rt 414
Common Roachfly - Tallaperla maria
Area: nr mouth Morris (Morris Quad)
Common Stone - Acroneuria abnormis
Area: nr Ansonia
Area: Blackwell above brg M-6
Area: Gaines rest area M-3
Area: Owassee M-5

Carolina Stone - Acroneuria carolinensis
Area: Blackwell above brg M-6
Area: Blossburg on US Rt. 15

Boreal Stone (Giant Brown Stonefly) - Acroneuria
lycorias
Area: Blackwell above brg M-6
Area: Owassee M-5

Northern Stone (Eastern Stonefly) - Agnetina capitata
Area: nr Ansonia
 Area: Blossburg on US Rt. 15

Giant Stone - Attaneuria ruralis
Area: Blackwell above brg M-6
Area: Owassee M-5

          Appalachian Stone - Hansonoperla applachia
                Area: trib. Pine Creek nr Morris

    Beautiful Stone - Paragnetina immarginata
               Area: nr Ansonia

       Embossed Stone - Paragnetina media
                   Area: Gaines rest area M-3
Sable Stripetail - Isoperla dicala
Area: nr Ansonia

Pale Stripetail - Isoperla holochlora
Area: nr Ansonia
Atlantic Willowfly - Taenionema atlanticum
Area: nr Ansonia

Boreal Willowfly (Early Brown Stonefly) - Taeniopteryx nivalis
        Area: PA Rt 414
Found 4/30/2006
Straight Run
Found 5/2/2007
Straight Run
RoachFly
Found 5/2/2007
Straight Run
Found 4/29/2006
Straight Run
Pygmy Snowfly
Asaph 3/30/06
Knobbed Salmonfly - Pteronarcys biloba
Area: Gaines rest area M-3

Appalachian Salmonfly - Pteronarcys proteus
Area: nr Ansonia
Area: Gaines rest area M-3