Jan Hamrsky: Prong-gilled mayfly nymph (Ephemeroptera, Leptophlebiidae)
Jan Hamrsky: Prong-gilled mayfly nymph (Ephemeroptera, Leptophlebiidae)
Jan Hamrsky: Prong-gilled mayfly nymph (Ephemeroptera, Leptophlebiidae)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)
Jan Hamrsky: Prong-gilled mayfly nymph (Paraleptophlebia submarginata)