A new classification of Callianassidae and related families (Crustacea: Decapoda: Axiidea) derived from a molecular phylogeny with morphological support Author Poore, Gary C. B. Author Dworschak, Peter C. Author Robles, Rafael Author Mantelatto, Fernando L. Author Felder, Darryl L. text Memoirs of Museum Victoria 2019 Mem. Mus. Vic. 2019-12-31 78 73 146 http://dx.doi.org/10.24199/j.mmv.2019.78.05 journal article 10.24199/j.mmv.2019.78.05 1447-2554 12214175 urn:lsid:zoobank.org:pub:263C1363-0ADA-4972-9224-AC690A1FD238 Vulcanocalliax Dworschak and Cunha, 2007 Vulcanocalliax Dworschak and Cunha, 2007: 37 .— Sakai, 2011: 350–351. Type species . Vulcanocalliax arutyunovi Dworschak and Cunha, 2007 , by original designation and monotypy. Diagnosis . Rostrum obsolete or obtusely triangular, flat, not reaching cornea; carapace without median carina; cardiac sulci absent. Pleomere 6 without lateral projections. Maxilliped 3 exopod absent. Male major cheliped merus with 1–2 small proximal teeth on lower margin . Remarks . The sole species, Vulcanocalliax arutyunovi Dworschak and Cunha, 2007 , was placed in its own subfamily of Callianassidae close to Bathycalliacinae by its authors but the subfamily was transferred to Bathycalliacidae by Sakai (2011) . Contrary to Sakai’s (2011) assertion, the only species does not have a dorsal plate on the uropodal exopod. It differs from Bathycalliax geomar in the absence of cardiac sulci and possession of a maxilliped 3 exopod.