Anaspidesidae, Ahyong & Alonso-Zarazaga, 2017

Ahyong, Shane T. & Alonso-Zarazaga, Miguel A., 2017, Anaspidesidae, a new family for syncarid crustaceans formerly placed in Anaspididae Thomson, 1893, Records of the Australian Museum 69 (4), pp. 257-258 : 258

Anaspidesidae fam. nov.

urn:lsid:zoobank.org:act:544D99A2-B92D-4752-9084-18779C90234C

Diagnosis. Rostrum broadly triangular. Cephalon and pereonite 1 fused; cervical groove distinct. Pereonites 2–8 shorter than pleonites; terga smooth. Pleonites with smooth terga; pleonite 6 unarmed or with short spines along posterior margin. Telson longitudinally subquadrate to subtriangular, dorsoventrallY flattened, apex BlUntlY angUlar to sUBtrUncate. Eyes pedunculate. Antenna 2 with lamellar scaphocerite. Mandible with palp. Thoracopod 1 forming maxilliped; exopod liguliform; epipods present or absent. Thoracopods 2–7 endopod similar; 2 epipods; exopods 2–6 slender, flagellum multiannulate; exopod 7 simple, lamellate or absent. Thoracopod 8 without exopod or epipods. Pleopods 1–5 exopod mUltiannUlate. Pleopods 1–2 endopod modified as gonopods in males. Pleopods 3–5 endopod reduced or absent, simple. Uropodal rami lamellar, exopod with weak, partial diaeresis. Uropods lamellar, forming tailfan with telson.

Type genus. Anaspides Thomson, 1894 .

Composition. Anaspides Thomson, 1894 : A. clarkei Ahyong, 2015 ; A. eberhardi Ahyong, 2016 ; A. jarmani Ahyong, 2015 ; A. richardsoni Ahyong, 2016 ; A. spinulae Williams, 1965 ; A. swaini Ahyong, 2015 ; A. tasmaniae ( Thomson, 1893) .

Allanaspides Swain, Wilson, Hickman & Ong, 1970 : Al. helonomus Swain, Wilson, Hickman & Ong, 1970 ; Al. hickmani Swain, Wilson & Ong, 1971 .

Paranaspides Smith, 1908 : P. lacustris Smith, 1908 ; P. williamsi Ahyong, Schwentner & Richter, 2017 .

Remarks. Eleven species in three genera are recognized in Anaspidesidae fam. nov., all endemic to Tasmania, Australia ( Ahyong, 2016; Ahyong et al., 2017).Although the taxonomic position and composition of the new family is congruent with that of Thomson’s Anaspididae , we take the opportunity to update contemporary diagnoses applicable to Anaspidesidae (e.g., Lake et al., 2002; Coineau & Camacho, 2013, as Anaspididae ). Namely, in anaspidesids, the telson is distally truncate to bluntly angular (rather than pointed or spinular), tHe maxillipedal exopod is flattened (instead of tUBUlar), and the maxilliped is not clearly eight-segmented, with the demarcation between the proximal two articles usually scarcely discernable.

ACKNOWLEDGMENTS. We are most grateful to Peter Ng for his assistance, insights and comments on the manuscript. This study was partially funded by a grant from the Australian Biological Resources Study and is a contribution from the Australian Museum Research Institute. M.A. Alonso-Zarazaga was partly supported BY project CGL2015‐66571‐P (MINECO/FEDER) (Ministerio de Economía y Competitividad, Spain).