Spirotrichea: Stichotrichia: Stichotrichina: Spirofilidae

 Stichotricha
(Claparède and Lachmann, 1858) Perty, 1849

Stichotricha 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).

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
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 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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