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    • Electrogena
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Summer mayfly nymphs (Siphlonurus lacustris) and Flathead mayfly nymph (Electrogena sp.), underwater, Europe, June, controlled conditions
01608840
Jan Hamrsky / Summer mayfly nymphs (Siphlonurus lacustris) and Flathead mayfly nymph (Electrogena sp.), underwater, Europe, June, controlled conditions
Flathead mayfly nymph (Electrogena sp.) and Stonefly nymph (Isoperla sp.), underwater, Europe, June, controlled conditions
01608838
Jan Hamrsky / Flathead mayfly nymph (Electrogena sp.) and Stonefly nymph (Isoperla sp.), underwater, Europe, June, controlled conditions
Flathead mayfly nymph (Electrogena sp.), clinging at the bottom, Europe, June, controlled conditions
01608837
Jan Hamrsky / Flathead mayfly nymph (Electrogena sp.), clinging at the bottom, Europe, June, controlled conditions