Genus: Oral aperture small, oval (Carey, 1992).
With more than 10 body kineties and cross-striations between adjacent kineties (Illustrated Guide, 1985).
Species:
Pseudomicrothorax sp.,
cell body 90 μm long, 56 μm wide,
x 640, Kasumi-ga-ura Sogo Koen (park), Tsuchiura city, Ibaraki Pref., Japan, July 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640