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Type: Article
Published: 2017-09-06
Page range: 47–81
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On the affinity of Isocypridinae and Herpetocypridinae, with redescriptions of four species of Ilyodromus Sars, 1894 (Crustacea, Ostracoda)

UMR CNRS 5558 – LBBE, Laboratoire Biométrie et Biologie Evolutive, Université Claude Bernard Lyon 1 – Bâtiment Mendel, VILLEURBANNE Cedex, France Centre for Ecosystem Management, Edith Cowan University, 270 Joondalup Dv, Joondalup, WA 6027, Australia. Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium.
Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium.
Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium. University of Hasselt, Research Group Zoology, Agoralaan Building D, B-3590 Diepenbeek, Belgium.
Bennelongia Environmental Consultants, 5 Bishop Street, Jolimont WA 6014, Australia
Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium. University of Ghent, Department of Biology, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
Crustacea Herpetocypridinae Isocypridinae Ilyodromus morphology SEM


In previous studies, the high degree of similarity of some species of Ilyodromus Sars, 1894 (Herpetocypridinae) to species of another subfamily (Isocypridinae) was noted, calling for a revision of their systematic placement. Here, the systematics of Ilyodromus Sars, 1894 are revised within this context by redescribing four species and comparing these to other genera of Herpetocypridinae and Isocypridinae. Material for the four redescribed species (I. amplicolis De Deckker, 1981, I. dikrus De Deckker, 1981, I. candonites De Deckker, 1981, and I. williamsi (McKenzie, 1966)) was obtained from Museum Victoria and recollected topotypes. It was found that most genera within Isocypridinae share morphological characters that are diagnostic of the subfamily Herpetocypridinae. On these grounds, the transfer of Isocypridinae to the rank of Tribe Isocypridini Rome, 1965 of subfamily Herpetocypridinae Kaufmann, 1900 is proposed here to account for the present understanding of morphological similarity.



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