Spirotrichea: Stichotrichia: Stichotrichina: Spirofilidae
Stichotricha
(Claparède and Lachmann, 1858) Perty, 1849
Suborder: Ventral cirri as 1 or more files of varied length; linear.
Family: Cirral files spiral obliquely around body (Illustrated Guide, 1985).
Genus: Oral cavity not wide; 2 oval macronuclei; marginal cirri confluent at rear;
frontventral cirri not linear; body firm, not laterally flexible (Illustrated Guide, 1985).
a large AZM at least 1/2 body length; caudal & transverse cirri present;
two ovoid macronuclei (Carey, 1992).
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Stichotricha sp. (secunda large variety ??),
250 μm long,
x 100, x 200, Aug. 7-13 1999, Vermont-Maine U.S.A., by Y. Tsukii
x 400, x 640
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
x 400, x 640
S. aculeata Wrzesnioski, 1884: Spindle-shaped; posterior end rounded; thin neck; 90
μm long; peristome 1/2 the body
length; contractile vacuole anteriorly located; two ovoid macronuclei (Carey, 1992).
* S. secunda Perty: 130-200 μm long;
fresh water (Kudo, 1966).
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