Family: Body more or less triangular to spatulate; tapered, round-tipped pseudopods.
Genus: Clear pseudopods, formed from clear anterior, more or less broad margin (Illustrated Guide, 1985).

Mayorella sp. 6 clips Higashi-hiroshima Hiroshima, 1998

Mayorella sp. 6 clips Higashi-hiroshima Hiroshima, 1998

Mayorella sp. 2 clips Kurome river Asaka Saitama, 1999