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)

Similar species -->> T. lacustris (elongated cylindrical, dotted); T. hispida (ellipsoidal, spiny); T. allia (broad cylindrical, spiny); T. klebsii (cylindrical, spiny);

31 μm 63 μm 94 μm; x 640