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Authority

(Ehrenberg) Schewiakoff (1893: 67)

Class

Heterotrichea

 

Order

Euplotida

Family

Uronychiidae

Additional References

Kahl (1932: 625), Borror (1963: 514), Curds & Wu (1983: 203), Hill & Borror (1992: 148), Petz et al. (1995: 182), Song & Packroff (1997: 352)

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Basionym

Stylonychia appendiculata Ehrenberg (1838: 373, pl. 42, fig. 3)

Synonyms

Diophrys marina Dujardin (1841: 445, pl. 10, fig. 4)
Styloplotes appendiculatus (Ehrenberg) Stein (1859b: 62)
Diophrys sp. (Thompson, 1972: 283, fig. 23)
See Curds & Wu (1983) for additional synonyms.

Description

In vivo 30–120 × 30–70 µm. Body ellipsoidal, slightly indented in region of caudal cirri, sometimes with a spur-like edge on anterior right, dorsoventrally flattened. Cirri: 5 or 6 frontoventral, 2 or 3 pretransverse, 4 or 5 transverse, 1–3 left-marginal, 3 caudal and prominent. Dorsal kineties 5 or 6. Adoral zone composed of 30–37 membranelles that do not extend onto the right ventral body side. Macronuclear nodules 2 (–5); micronuclei 2–4. Contractile vacuole 1. Movement: moderately rapid.

Distribution

Ross Sea, at 74°02’S 140°01’W, in sea-ice (Petz, unpublished data); Bellings-hausen Sea (Thompson, 1972); Weddell Sea (Petz et al., 1995); cosmopolitan (Dragesco & Dragesco-Kernéis, 1986).

Comments

N/A

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