Species:
Lorica cylindrical (var. abrupta 22-30 x 15-19 μm and var. minor 16-20 x 10-12 μm) with semispherical ends,
or elongated ellipsoidal (var. arcuata 20-30 x 14-18 μm); collar absent; surface granulated or dotted
(many small and short spines)
(An Illustrated Guide to Freshwater Zooplankton in Japan, 2000)
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