Genus: Cigar- or foot-shaped; a single macronucleus and 1 to several vesicular or compact microuclei
Species: 100-150 μm long, 50-60 μm wide; foot-shaped; green with symbiontic Chlorella; a compact micronucleus; a macronucleus; two contractile vacuoles (Kudo, 1966). Ovoid, anterior transversely truncated, posterior rounded; 80-150 μm long; oral groove wide; cytoplasm filled with green zoochlorellae; two contractile vacuoles; a single ovoid macronucleus and a micronucleus; caudal cilia present (Carey, 1992).
Images of collecting locality:
a small pond at Omachi natural park, Ichikawa city, Chiba Pref., Japan, December 16, 2006 by Y. Tsukii