Guy Edwardes / Stone fly (Leuctra fusca) on Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium) Zelske Jame, Skocjan Karst Gorge, Rakov Skocjan, Slovenia, April

Jan Hamrsky / Stonefly nymph (Plecoptera) resting on the stones at the bottom, Europe, April, controlled conditions

Jan Hamrsky / Prong-gilled mayfly nymph (Leptophlebiidae) and Stonefly nymph (Plecoptera), hiding in the algae at the bottom, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera) grazing algae, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera), grazing algae, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera), grazing algae, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera), grazing algae, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera), grazing algae, Europe, April, controlled conditions

Jan Hamrsky / Stonefly nymph (Plecoptera) adhering to the stem of plant, Europe, May, controlled conditions

Phil Savoie / American Dipper (Cinclus mexicanus) with mayfly and stonefly nymphs in bill, Montana, USA

Jan Hamrsky / Stonefly (Plecoptera) larva on stem. Czech Republic. Controlled conditions.

MYN / Piotr Naskrecki / Stonefly (Leuctra sp) dorsal view, Concord, Massachusetts, USA, May. meetyourneighbours.net project

MYN / Piotr Naskrecki / Stonefly (Leuctra sp) Concord, Massachusetts, USA, May. meetyourneighbours.net project

Jan Hamrsky / Stonefly (Plecoptera) larva. Europe, April.

Jan Hamrsky / Stonefly (Plecoptera) larva. Europe, April.

Nature Production / Stonefly (Oyamia lugubris / gibba) Japan

MYN / Niall Benvie / Stonefly {Dinocras sp} larva, Alicante, Spainmeetyourneighbours.net project

John Cancalosi / Cast-off skins of the aquatic nymphs of the Giant stonefly {Plecoptera} Yellowstone River, Wyoming, USA

Duncan Mcewan / Stonefly {Perla} Scotland, UK

Nature Production / Stonefly larva {Paragnetina tinctipennis} Japan

Nature Production / Stonefly larva {Kamimuria uenoi} Japan

Nature Production / Stonefly larva {Oyamia sp} Japan

Nature Production / Wingless Stonefly larva {Scopura longa} Japan

Nature Production / Wingless Stoneflies mating {Scopura longa} Japan

Nature Production / Wingless Stonefly {Scopura longa} male recently emerged from larval case, Japan

Michael Durham / Golden Stonefly (Hesperoperla pacifica) carrying a load of parasitic mites flying near the bank of the Metolius River, Deschutes National Forest, Oregon

Michael Durham / Golden Stonefly (Hesperoperla pacifica) flying near the bank of the Metolius River, Deschutes National Forest, Oregon

Willem Kolvoort / Long-bodied water scorpion / Water stick insect (Ranatra linearis) feeding on Stonefly larva, garden pond, Holland

Kim Taylor / Stone fly {Leuctra fusca} on balsam flower, Europe

Kim Taylor / Stone fly larva {Plecoptera}

Michael Durham / Golden Stonefly (Calineuria sp) female dipping into water to lay eggs, Metolius River, Oregon

Michael Durham / Golden Stonefly (Calineuria sp) female dipping into water to lay eggs, Metolius River, Oregon

Duncan Mcewan / Stonefly - aquatic nymph stage of development

Duncan Mcewan / Stonefly - aquatic nymph stage of development

Duncan Mcewan / Stonefly - aquatic nymph stage

Nature Production / Stonefly {Perla tibialis} larva, Japan