Article · Wikipedia archive · Last revised Jun 8, 2026

Acinetactis

Acinetactis is a possible genus of protist first described in 1886 by A.C. Stokes, who also described the type species A. mirabilis. In 1928, Valkanov reported the discovery of a second species, A. arnaudovii. The most recently recorded specimen of A. mirabilis was reported in 1940, no Acinetactis specimens have been reported since.

Last revised
Jun 8, 2026
Read time
≈ 1 min
Length
231 w
Citations
6
Source
Acinetactis
Acinetactis mirabilis
Scientific classification Edit this classification
Domain: Eukaryota
Clade: incertae sedis
Family: Acinetactidae
Genus: Acinetactis
A.C. Stokes

Acinetactis is a possible genus of protist first described in 1886 by A.C. Stokes, who also described the type species A. mirabilis.1 In 1928, Valkanov reported the discovery of a second species, A. arnaudovii.2 The most recently recorded specimen of A. mirabilis was reported in 1940, no Acinetactis specimens have been reported since.3

The validity and classification of this genus is contested. In 1914, Adolf Pascher cast doubt on Acinetactis, suggesting that it was a junior synonym of Dimorpha mutans.4 Cavalier-Smith classified Acinetactis as a heliomonad in 1993.5 Bass et al. suggested in 2009 that the genus was a cercozoan in the class Granofilosea.6

References

References

  1. Stokes (1886), "Notices of new fresh-water infusoria", Proceedings of the American Philosophical Society, 23: 562–568
  2. Valkanov (1928), "Beitrag zur Kenntnis der Flagellaten von Bulgarien", Izvestiya Na Bulgarskoto Botanichesko Druzhestvo, 1: 105–120
  3. Lackey (1940), "The Microscopic Flora and Fauna of Tree Holes", Ohio Journal of Science, 40 (4): 186–192
  4. Pascher (1914), Die Süsswasser-Flora: Deutschlands, Österreichs und der Schweiz, vol. 1, p. 51
  5. Cavalier-Smith, T (1993). "Kingdom protozoa and its 18 phyla". Microbiological Reviews. 57 (4): 953–94. doi:10.1128/mmbr.57.4.953-994.1993. PMC 372943. PMID 8302218.
  6. Bass D, Chao EE, Nikolaev S, et al. (February 2009). "Phylogeny of Novel Naked Filose and Reticulose Cercozoa: Granofilosea cl. n. and Proteomyxidea Revised". Protist. 160 (1): 75–109. doi:10.1016/j.protis.2008.07.002. PMID 18952499.