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Spirotrichea: Stichotrichida: Urostylidae

 Holosticha sp.
Wrzesniowski, 1877
Syn.: Amphisia Sterki, 1878

Holosticha Family: Frontal cirri differ in size and/or pattern from ventral ones of files; "collar" extends short distance along right edge of body; oral area not U-shaped (Illustrated Guide, 1985).
Genus: Many species; usually ovoid or elongate in shape; AZM 1/4 of the body length; two rows of ventral cirri; frontal cirri present (Carey, 1992). Frontventral cirri in zig-zag files; rear rounded, body oval to long (Illustrated Guide, 1985).
Species:

Holosticha sp., cell body 150-170 μm long, 40 μm wide, many macronuclei distributed throughout the body, x 400, Japan, 1998 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Holosticha Holosticha Holosticha

H. diademata (Rees, 1884) Kahl, 1930-5: Elongate, 140 μm long; a long AZM occupying 1/3 body length; 7 long & stout frontal cirri; two ovoid macronuclei (Carey, 1992).
H. kessleri (Wrzesnioski, 1877) Kahl, 1930-5: Elongate, anterior rounded, but posterior truncated; 150 μm long; AZM 1/4 body length; two groups (?) of ovoid macronuclei (Carey, 1992).

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