Stoneflies (Order Plecoptera) are a small group of aquatic insect. There are a little under 40 British species.
Although as adults they resemble in many ways Lacewings (suborder Plannipennia) and Alderflies (suborder Megaloptera), they are more closely related to Mayflies (Ephemeroptera).
Other names for (or types of) Plecoptera include:
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