Australian Axiidae (Crustacea: Decapoda: Axiidea)

Abstract.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.Keywords. Montanaxius mediumquod gen. et sp. nov., Axiidae, seamount, sponge associate.

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“…Mouthparts similar to those of other species of the family, without specific characters (see Poore & Collins 2009). Third maxilliped (Fig.…”

Section: Materials Examined Holotypementioning

confidence: 80%

A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount

Dworschak

2016

EJT

680

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show abstract

“…Here, colour photographs and figures of the carapace, pereopods 1 and tail fan are included. Sakai (2011) based a new species Alienaxiopsis lizardensis on the specimen from Lizard I., Great Barrier Reef, Australia (AM P.25014) that was examined and identified by Poore and Collins (2009) as Allaxius clypeatus. Sakai listed Poore and Collins' record under the synonymy and distribution of both species.…”

Section: Resultsmentioning

confidence: 99%

“…All of the males lack pleopod 1 but possess a minute tubercle in its place. Kensley (2003) and Poore and Collins (2009) justified the generic placement of this species.…”

Section: Paraxiopsis Austrinus (Sakai 1994)mentioning

confidence: 88%

Untitled

2018

Mem. Mus. Vic.

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“…-The family was recently rediagnosed (Poore & Collins, 2009) to include smaller specialised taxa previously included in other families, Calocarididae Ortmann, 1891 and Eiconaxiidae Sakai & Ohta, 2005. Parascytoleptus Sakai & de Saint Laurent, 1989 Parascytoleptus Sakai & de Saint Laurent, 1989: 39. Type species. -Paraxius tridens Rathbun, 1906, by original designation.…”

Section: Taxonomic Accountmentioning

confidence: 99%

“…-Sakai & Ohta (2005) Poore & Collins, 2009. Axius pitatucensis has few but strong rostral and gastric carinal spines and does not belong to Spongiaxius (de Saint Laurent, pers.…”

Section: Spongiaxius Sakai and De Saint Laurent 1989mentioning

confidence: 99%