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Ilyocryptus spinifer Herrick 1882 (Anomopoda, Branchiopoda): a redescription based on North American material and designation of a neotype from Minnesota

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Abstract

The morphology of Ilyocryptus spinifer Herrick, 1882 is redescribed based on material from USA and Canada with special attention to features, regarded now as important for Ilyocryptidae taxonomy. Morphological variability is analysed, and a neotype of this species is designated from Lake Alice Bog, MN, USA. Scanning electron microscopy is used to illustrate fine morphological details. Males, ephippial females and ephippia are described for the first time for North American populations. Historical descriptions of well-known previous North American authors are critically discussed. Only a single species from I. spinifer s. lat. species group is present in USA and Canada, Ilyocryptus longiremis Sars 1888 is a junior synonym of I. spinifer.

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Kotov, A.A., Williams, J.L. Ilyocryptus spinifer Herrick 1882 (Anomopoda, Branchiopoda): a redescription based on North American material and designation of a neotype from Minnesota. Hydrobiologia 428, 67–84 (2000). https://doi.org/10.1023/A:1003983723896

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