Species: 0.5-1 mm long; anterior end expanded; body surface with groups of longer cilia; posterior portion
drawn out and often within a gelatinous tube (lorica); macronucleus long band-form (Kudo, 1966).
Body attenuated, peristome widely expanded, attains 0.5-1.0 mm; peristome has no central raised dome;
somatic bristles present; gelatinous lorica; macronucleus moniliform but usually
observed as a long rod; colourless