European Journal of Taxonomy
2016 (229) - Pages 1-11 (EJT-229)
13 September 2016
A new genus and species of axiid shrimp, Montanaxius mediumquod gen. et sp. nov., is described and illustrated based on three specimens collected from hexactinellid sponges from a seamount in the southwest Indian Ocean. The new genus is characterized by a laterally denticulate rostrum, short lateral carina, absence of submedian carina, a prominent toothed median carina, round pleomere pleura 2–5, pleurobranchs on second to fourth pereopods, and the presence of a male first pleopod and appendix interna on pleopods 3–5. It most closely resembles Levantocaris Galil & Clark, 1993 and Planaxius Komai & Tachikawa, 2008, but differs from the former by being gonochoristic, having a strongly elevated gastric region and well-developed eyes, and from the latter by its toothed median carina and the presence of a median telson spine.
Montanaxius mediumquod gen. et sp. nov., Axiidae, seamount, sponge associate.
DWORSCHAK P. C. 2016. — A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount. European Journal of Taxonomy 2016 (229): 1-11 (EJT-229). https://doi.org/10.5852/ejt.2016.229