Jan Hamrsky:
Hacklegill mayfy nymph (Ephemeroptera, Potamanthidae) crawling on the stone
Jan Hamrsky:
Hacklegill mayfy nymph (Ephemeroptera, Potamanthidae) crawling on the stone
Jan Hamrsky:
Hacklegill mayfy nymph (Ephemeroptera, Potamanthidae) crawling on the stone
Jan Hamrsky:
Hacklegill mayfy nymph (Ephemeroptera, Potamanthidae) crawling on the stone
Jan Hamrsky:
Hacklegill mayfy nymph (Potamanthus luteus). Branched and fringed tracheal gills increase the body surface area and enable the nymphs to extract oxygen directly from the surrounding water.
Jan Hamrsky:
Hacklegill mayfy (Potamanthidae) emerging from its nymphal skin on the water surface.
Jan Hamrsky:
Hacklegill mayfy nymph (Potamanthus luteus) crawling at the bottom.
Jan Hamrsky:
Hacklegill mayfy nymph (Potamanthidae) hiding at the bottom.
Jan Hamrsky:
Hacklegill mayfy nymph (Potamanthus luteus)