insect
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Dragonfly nymph
Dragonfly nymph. Aquatic larva stage living in freshwater before emerging as a free flying, terrestrial adult insect. Possibly taxon family Libellulidae. England, UK.

Black darter dragonfly head
Head on view of Black darter dragonfly, Sympetrum danae on rock. Showing head, mouth and compound eyes. Photographed in Cumbria near Hawkeshead, UK

Mosquito aquatic larva – 01
Mosquito aquatic larva, Culex pipiens. Microbial feeders eating micro-plankton, small algae etc.

Stonefly nymph Plecoptera
Aquatic nymph stage, Stonefly nymph. The adult is a free flying insect of the order Plecoptera These species are intolerant of water pollution and so are regarded as an indicator species i.e their presence in a body of freshwater suggests … Continued