Pteronarcys Biloba
''Pteronarcys biloba'', the knobbed salmonfly, is a species of giant stonefly in the family Pteronarcyidae The Pteronarcyidae, also known as giant stoneflies or salmonflies, are a family of the order Plecoptera. Natural history Two genera of Pteronarcyidae are found; ''Pteronarcys'' is found in all of North America, while ''Pteronarcella'' is f .... It is found in North America. References * DeWalt R, Cao Y, Tweddale T, Grubbs S, Hinz L, Pessino M, Robinson J (2012). "Ohio USA stoneflies (Insecta, Plecoptera): species richness estimation, distribution of functional niche traits, drainage affiliations, and relationships to other states". ''ZooKeys'' 178: 1-26. Further reading * Plecoptera {{plecoptera-stub ...
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Pteronarcyidae
The Pteronarcyidae, also known as giant stoneflies or salmonflies, are a family of the order Plecoptera. Natural history Two genera of Pteronarcyidae are found; ''Pteronarcys'' is found in all of North America, while ''Pteronarcella'' is found only in the west. The two genera comprise 10 distinct species, two of which are ''Pteronarcella''. Lifespans range from one to four years. The name "salmonflies" comes from their role in the diets of salmon, and they play an important role in fly fishing. Adults emerge from April to June. The giant stoneflies are very sensitive to stress. Habit and habitat They live in a lotic-erosional habitat. Larvae of giant stoneflies live in cool streams of small to medium size, in leaf and woody debris packs. They prefer swift riffle A riffle is a shallow landform in a flowing channel. Colloquially, it is a shallow place in a river where water flows quickly past rocks. However, in geology a riffle has specific characteristics. Topographi ...
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