Female Cymothoa eremita, from Martin et al. (2016).

Belongs within: Cymothoida.

Cymothoa is a genus of marine isopods that are parasitic or commensal on fishes.

Characters (from Menzies & Kruczynski 1983): Cephalon more or less deeply immersed in pereonite I. First antennae widely separated at base. Pereonite I longer than pereonite II. Pleon immersed in pereonite VII. Uropoda of mature adult much shorter than pleotelson.

<==Cymothoa Fabricius 1793T08
    |--*C. oestrum (Linnaeus 1758) [=Oniscus oestrum]MK83
    |--C. asilusL02
    |--C. caraibica Bovallius 1885MK83
    |--C. curta Schioedte & Meinert 1884T08
    |--C. epimerica Avdeev 1979T08
    |--C. eremita (Brünnich 1783)T08
    |--C. excisa Perty 1833MK83
    |--C. eximia Schioedte & Meinert 1884T08
    |--C. indica Schioedte & Meinert 1884T08
    |--C. oestroides [=Meinertia oestroides]D56
    `--C. selari Avdeev 1978T08

*Type species of generic name indicated


[D56] Dawes, B. 1956. The Trematoda with special reference to British and other European forms. University Press: Cambridge.

[L02] Latreille, P. A. 1802. Histoire Naturelle, générale et particulière des crustacés et des insectes vol. 3. Familles naturelles des genres. F. Dufart: Paris.

[MK83] Menzies, R. J., & W. L. Kruczynski. 1983. Isopod Crustacea (exclusive of Epicaridea). Memoirs of the Hourglass Cruises 6 (1): 1–126.

[T08] Trilles, J.-P. 2008. Some marine isopods from the Senckenberg Research Institute (Frankfurt am Main, Germany) (Crustacea, Isopoda: Cymothoidae, Aegidae, Corallanidae, Cirolanidae). Senckenbergiana Biologica 88 (1): 21–28.

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