Main Content
< Top page

The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Rimostrombidium

Rimostrombidium Jankowski, 1978

See the description of genus Strobilidium.
  1. Rimostrombidium armeniensis (Zharikov, 1987) n. comb. (ref. ID; 4613 redescribed paper)
    Syn; Strobilidium armeniensis Zharikov, 1987 (ref. ID; 4613)
  2. Rimostrombidium brachykinetum Krainer, 1995 (ref. ID; 4613)
  3. Rimostrombidium conicum (Kahl, 1932) n. comb. (ref. ID; 4356 redescribed paper) reported author and year? (ref. ID; 4613)
  4. Rimostrombidium epacrum (Lynn & Montagnes, 1988) n. comb. (ref. ID; 4356 redescribed paper)
  5. Rimostrombidium humile (Penard, 1922) Petz & Foissner, 1992 (ref. ID; 4356 redescribed paper, 4613)
    Syn; Strobilidium humile Penard, 1922 (ref. ID; 4613)
  6. Rimostrombidium hyalinum (Mirabdullajev, 1985) Petz & Foissner, 1992 (ref. ID; 4356 redescribed paper, 4613)
    Syn; Strobilidium hyalinum Mirabdullaev, 1985 (ref. ID; 4613)
  7. Rimostrombidium kahli n. comb. (original nomenclatural act) (ref. ID; 4356)
  8. Rimostrombidium lacustris (Foissner, Skogstad & Pratt, 1988) Petz & Foissner, 1992 (ref. ID; 4356 redescribed paper, 4613) reported year? (ref. ID; 6141)
    Syn; Strobilidium lacustris Petz & Foissner, 1992 (ref. ID; 6141), Foissner et al., 1999 (ref. ID; 6141); Strobilidium velox Foissner, Skogstad & Pratt, 1988 (ref. ID; 4613)
  9. Rimostrombidium lineolatum (Tucolesco, 1962) n. comb. (ref. ID; 4356 redescribed paper)
  10. Rimostrombidium marinum (Faure-Fremiet, 1924) n. comb. (ref. ID; 4356 redescribed paper)
  11. Rimostrombidium mirabile (Vuxanovici, 1962) n. comb. (ref. ID; 4356 redescribed paper)
  12. Rimostrombidium multinucleatum (Lynn & Montagnes, 1988) n. comb. (ref. ID; 4356 redescribed paper)
  13. Rimostrombidium polyhalinum (Tucolesco, 1962) n. comb. (ref. ID; 4356 redescribed paper)
  14. Rimostrombidium saltans (Vuxanovici, 1962) n. comb. (ref. ID; 4356 redescribed paper) reported author and year? (ref. ID; 4613)
  15. Rimostrombidium sphaericum (Lynn & Montagnes, 1988) n. comb. (ref. ID; 4356 redescribed paper)
  16. Rimostrombidium sulcatum (Tucolesco, 1962) n. comb. (ref. ID; 4356)
  17. Rimostrombidium velox (Faure-Fremiet, 1924) Jankowski, 1978 (ref. ID; 4613)
    Syn; Strobilidium velox Faure-Fremiet, 1924 (ref. ID; 4613)

Rimostrombidium armeniensis (Zharikov, 1987) n. comb. (ref. ID; 4613 redescribed paper)

Synonym

Strobilidium armeniensis Zharikov, 1987 (ref. ID; 4613)

Descriptions

1) Size in vivo (?) about 55-60 um. 2) Body of silver nitrate-impregnated specimens roughly hemispherical with anterior end transversely truncated and posterior broadly rounded. 3) Macronucleus near anterior end of cell, globular. 4) Contractile vacuole in posterior end, as in R. lacustris. 5) Cytoplasm like colourless. 6) About 12 longitudinal bristle (ciliary) rows. 7) Oral apparatus occupies anterior end of cell, consists of about 31 membranelles forming prominent, circular adoral zone. 8) Movement likely rapid, probably as in R. lacustris. (ref. ID; 4613)

Comments

This species was overlooked by Petz & Foissner (1992), who transferred most Strobilidium species to Rimostrombidium because they have slightly spiralling somatic ciliary rows not extending to the posterior end of the cell, that is, do not form a caudal spiral as in Strobilidum caudatum. Detailed redescriptions needed, especially of live specimens. This species is unique by it globular macronucleus. In all other freshwater strobiliids, the macronucleus is semicircular and underneath the adoral zone of membranelles. Other oligotrichs have conspicuous extrusomes (Pelagostrombidium, Limnostrombidium) or prominent jumping bristles (Halteria, Pelagohalteria). (ref. ID; 4613)