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 Lipkecallianassa Sakai, 2002 Lipkecallianassa Sakai, 2002: 477 .— Sakai, 2005b: 212 . — Sakai, 2011: 522. Type species . Lipkecallianassa abyssa Sakai, 2002 , by original designation and monotypy. Diagnosis . Rostrum acute, anteriorly directed, as long as eyestalks. Cornea with scattered reduced pigmentation. Maxilliped 3 merus almost rectangular, distally truncate with squarish angle between distal and lower margins, longer than wide at ischium-merus suture, with acute distomesial angle . Pereopod 3 propodus linear, without lobe on lower margin. Uropodal endopod ovoid, usually longer than wide, anterior margin straight or slightly convex, posterodistal margin evenly convex. Uropodal exopod about 1.5–1.8 times as long as wide. Telson anterolateral lobe obsolete, undefined; posterior margin with pair of broad posterolateral lobes, widely excavate at midpoint, with mesial spine . Remarks. The monotypic genus Lipkecallianassa is known from a single damaged incomplete specimen of the type species. But based on Sakai’s (2002) short description and figures, the species has a linear propodus of pereopod 3, seen elsewhere only in Praedatrypaea longicauda and P. modesta but neither of these species has a strongly excavate posterior telsonic margin. The telson resembles that of species of Pugnatrypaea in having an excavate posterior margin; both genera have a narrow ischium-merus of maxilliped 3. All of these three genera have a tooth or spine on the distal margin of the merus of maxilliped 3 but are not allied in the molecular or morphological trees of Robles et al. (in press).