Species (var. antilopaeum) : Cell body 45-72 μm long, 43-71 μm wide, L/W = 1, constriction 13-25 μm wide, spines 19-22 μm long, semicells with 4 spines (2 anterior, 2 basal), cell wall at the center of semicells thickened and punctated (Illustrations of The Japanese Fresh-water Algae, 1977).

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X. antilopaeum var. antilopaeum 51 x 51 μm Kasuga Fukuoka, 2001	X. antilopaeum var. antilopaeum 71 x 61 μm Hiroshima Univ. Hiroshima, 1998 Movies	X. antilopaeum var. antilopaeum μm Tsuchiura Ibaraki, 2003
X. antilopaeum var. antilopaeum μm Numappara marsh Kuroiso Tochigi, 2003	X. antilopaeum var. antilopaeum 55 x 72 μm Ohnuma Nasu-shiobara Tochigi, 2007	X. antilopaeum var. antilopaeum μm Kareki-numa m. Nikko Tochigi, 2008
X. antilopaeum var. antilopaeum μm Water reservoir Nabekura highland Nagano, 2008	X. antilopaeum var. antilopaeum 51 x 51 μm Maimeno-ike Norikura highland Nagano, 2006	X. antilopaeum var. antilopaeum 50 x 51 μm Dojo-ike Norikura highland Nagano, 2006	X. antilopaeum var. antilopaeum μm Dojo-ike 1 Norikura highland Nagano, 2007
X. antilopaeum var. antilopaeum 59 x 52 μm Kashibaru marsh 5 Karatsu Saga, 2006	X. antilopaeum var. antilopaeum μm Kashibaru marsh 4 Karatsu Saga, 2008

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