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Hexagenia nymphs. 1921. Hexagenia; Mayflies--Anatomy; Nymphs (Insects).

Sivun Hexagenia kuva

Kuvaus:

Hexagenia nymphs. Nymph of H. bilineata Say, dorsal view. The hind feet are turned forward for comparison with the other feet, and the gills on the right are moved aside to show the markings on the abdomen. The 3-branched, rudimentary gills on the first abdominal segment are abnormal

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cc-publicdomain
julkaisija
Freshwater and Marine Image Bank, University of Washington Libraries Digital Collections
tarjoaja
Freshwater and Marine Image Bank