Jan Hamrsky:
Flathead mayfly nymph (Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymphs (Ephemeroptera, Heptageniidae)
Jan Hamrsky:
Flathead mayfly nymph (Ephemeroptera, Heptageniidae)