Zeuxoides Sieg 1980

Edgar, Graham J., 2008, Shallow water Tanaidae (Crustacea: Tanaidacea) of Australia, Zootaxa 1836 (1), pp. 1-92 : 29

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https://doi.org/ 10.11646/zootaxa.1836.1.1



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Zeuxoides Sieg 1980


Genus Zeuxoides Sieg 1980

Diagnosis. Five pleonites present plus pleotelson. Antennule with four articles, first article 2.2 to 3 times length of second article, terminal article with five to ten aesthetascs. Antenna with seven articles, article 2 longer than wide, last two articles small. Maxillule endite with eight large terminal spiniform setae, palp with several long setae. Labium outer lobe with small terminal process. Pereopod 1 coxa with anterior bulge. Pleopod basis with one or two plumose setae on inner margin and five to nine setae on outer margin, endopod inner margin with three to six plumose setae. Uropod with six or seven articles, terminal article greatly reduced. Sexually dimorphic.

Remarks. Zeuxoides is very closely related to Zeuxo , differing in the greatly reduced terminal article of the uropod and presence of numerous aesthetascs on the antennule ( Sieg 1980b). Additional study is required to validate whether these minor differences are sufficient to warrant generic distinction. The two clades may not be monophyletic, given that species within both genera possess a highly variable number of aesthetascs and uropod articles, key features used to distinguish these genera.

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