Planaxius Komai and Tachikawa, 2008

Poore, Gary C. B. & Collins, David J., 2009, Australian Axiidae (Crustacea: Decapoda: Axiidea), Memoirs of Museum Victoria 66 (2), pp. 221-287 : 272

Planaxius Komai and Tachikawa, 2008

Planaxius Komai and Tachikawa, 2008: 22–24 .

Remarks. Planaxius is recognised by the combination of the absence of submedian gastric carinae, uropodal exopod with a transverse suture, pereopodal epipods present, three pairs of pleurobranchs, toothed triangular rostrum, male pleopods 1 and 2 present and pleopods 3–5 with an appendix interna. It is the absence of submedian gastric carinae and presence of appendices internae that distinguishes the genus from Bouvieraxius whose species have five gastric carinae and lack appendices internae ( Komai and Tachikawa, 2008). These authors described the type and only species as lacking a median gastric carina. The single individual from Australia referred to this species below has a definite median gastric carina at the base of the rostrum extending as far back as the lateral gastric carinae.