uroleptus musculus uroleptus musculus uroleptus musculus is a species of ciliates. uroleptus musculus scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: ciliophora class: spirotrichea order: stichotrichida family: urostylina genus: uroleptus species: u. musculus binomial name uroleptus musculus(müller, 1786) description the organism is either white or rose-coloured. the collar extends from ventral files, that extends a short distance along the right side of the body. the body is also elongated and has a tail-like portion, that has 3 frontals and 2-4 rows of ventral cirri. it has no transverse cirri. the oral area is not u-shaped. further information: uroleptus limnetis