Seven scuticociliates (Protozoa, Ciliophora) from Alabama, USA, with descriptions of two parasitic species isolated from a freshwater mussel Potamilus purpuratus Author Xuming Pan text European Journal of Taxonomy 2016 249 1 19 journal article 37563 10.5852/ejt.2016.249 09521c67-41e4-40da-9d43-97412eb789e9 118-9773 200009 urn:lsid:zoobank.org:pub:43278833-B695-4375-B1BD-E98C28A9E50E Mesanophrys cf. carcini Small & Lynn in Aescht, 2001 Fig. 2A–C ; Table 1 Description Description based on Alabama population: body ( in vivo ) 35–55 × 15–25 μm, spindle-shaped ( Fig. 2A ) or pyriform ( Fig. 2B ), having sharply pointed anterior end and narrowly rounded caudal end ( Fig. 2A ); variability in shape likely attributable to nutritional conditions ( Fig. 2A–B ) or division ( Fig. 2C ). Buccal field 10–15 μm in length or 25–30% of body length. Somatic cilia distributed in a dense lateral field, 5–8 μm long ( Fig. 2A ). Extrusomes undetectable ( Fig. 2A–C ). Cytoplasm transparent or grey, granulated; cytoplasmic granules 3–5 μm long, 1–1.5 μm wide, refractive. Macronucleus single, large, 8–13 μm long or 20–30% of body length, 8–12 μm wide or 40–50% of body width, spheroid, centrally located. One micronucleus attached to macronucleus. Locomotion by moving on substrate or swimming in water. Somatic cilia 7 to 10 μm long, ten somatic kineties composed of dikinetids in anterior ⅔ of cell. Membranelle 1 (M1) slightly separated from apex of anterior end, comprising two rows of kinetids each with seven to nine basal bodies ( Fig. 2D ). M2 bearing three to five longitudinal rows of cilia, with each longitudinal row having six to eight basal bodies ( Fig. 2D ). M3 posterior to M2, comprising three rows of kinetids ( Fig. 2D ).