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Perlodidae

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Perlodidae
Isoperla sp
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Cohort: Polyneoptera
Order: Plecoptera
Superfamily: Perloidea
Family: Perlodidae
Yugus nymph
Helopicus subvarians nymph

The Perlodidae, also known as the perlodid stoneflies, stripetails, or springflies, are a family of stoneflies.

Natural history

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The family Perlodidae is composed of at least 50 genera and over 350 species, with the fossil records extending at least from the Triassic. The majority of perlodid stoneflies are univoltine - one generation occurs per year. Usually, adults emerge from April to June. Many species have an egg diapause during the warmer months; this allows them to inhabit otherwise unfriendly environments like temporary seeps or streams. Larvae have flattened bodies, often with patterns on their heads and thoraces, long tails, and divergent hind wing pads. Unlike the similar common stoneflies, perlodid larvae do not have branching gills on their thoraces. The perlodids are found throughout North America.

Habit and habitat

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The Perlodidae are generally lotic and lentic erosional. These habitats are flowing streams or pools that contain sediments, vascular plants, and detritus. They are most often found in cool, clear streams with rocky bottoms. They are found under rocks and in coarse particulate organic matter where many prey are to be found. The larvae are generally considered to be clingers as can be seen by their wide stance for gripping substrates.

Functional feeding group

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The perlodid larvae are mostly predators that engulf their prey, although a few species are scrapers and collector-gatherers. They will eat a variety of small invertebrates, but they are also known to eat plant matter, especially when young.

Genera

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Selected genera in the two subfamilies include:[1][2]

Isoperlinae
Perlodinae
Extinct, incertae sedis

References

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  1. ^ DeWalt, R.E.; Maehr, M.D.; Neu-Becker, U.; Stueber, G. (2019). "family Perlodidae". Plecoptera species file online, Version 5.0. Retrieved 2019-06-11.
  2. ^ "Perlodidae". GBIF. Retrieved 2019-06-11.
  • Voshell, J.R. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward. Blacksburg, Va. 2002.
  • Merritt and Cummins. An Introduction to the Aquatic insects of North America 3rd ed. Kendall Hunt. Dubuque, Iowa. 1996.
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