Placement of Helopicus rickeri Stark in Hydroperla frison (plecoptera: Perlodidae) with the description of the adult female, nymph, and egg and a cladistic analysis of Hydroperla

C H Nelson

Published in Proceedings of the Entomological Society of Washington, in 1996, in volume 98, pages 237-244

Date published:1996

BHL: 28254416
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