Family: Body monopodial; locomotion by slight forward bulging (Illustrated Guide, 1985).
Genus: Limax amoebae with hyaline cap reduced to shallow crescent or absent in continuing locomotion, though always seen on initiation of pseudopodium; advance often with non-eruptive slight antero-lateral bulging; villous-bulb uroid with more or less rigid fine villi often present (Page, 1976).
Species: Monopodal, 75-125 μm; pseudopods, more or less eruptive; uroid, temporary, of gnarled filaments, 10-15 μm long; ectoplasm smooth; nucleus spherical 14 μm with endosome distinct 8 μm (Illustrated Guide, 1985).

S. clava 7 clips Higashi-hiroshima Hiroshima, 1998	S. clava 4 clips Higashi-hiroshima Hiroshima, 1998	S. clava 3 clips μm Higashi-hiroshima Hiroshima, 1998
S. clava 4 clips Shinrin-koen Namegawa Saitama, 1998	S. clava 7 clips Japan, 1998	S. clava multinucleate 4 clips 122 μm Japan, 1999