Revision of the squat lobsters of the genus Phylladiorhynchus Baba, 1969 (Crustacea, Decapoda, Galatheidae) with the description of 41 new species Author Rodríguez-Flores, Paula C. Author Macpherson, Enrique 0000-0003-4849-4532 macpherson@ceab.csic.es Author Machordom, Annie text Zootaxa 2021 2021-07-30 5008 1 1 159 http://dx.doi.org/10.11646/zootaxa.5008.1.1 journal article 10.11646/zootaxa.5008.1.1 1175-5326 5157455 BF65A422-9D58-4CC6-82DD-04F3A2F7B730 Phylladiorhynchus erebus Schnabel & Ahyong, 2019 Phylladiorhynchus erebus Schnabel & Ahyong, 2019: 311 , figs. 4, 5. Diagnosis (modified from Schnabel & Ahyong 2019 ). Rostrum triangular, subapical spines obsolescent, lateral margins straight. Carapace with transverse row of 5 epigastric spines; parahepatic spines on protogastric region absent; anterior protogastric ridge usually medially interrupted; anterior metagastric ridge scale-like; anterior branchial margin with 3 spines. Pleonal tergite 3 without posterior transverse ridge. Thoracic sternite 3 anterior margin sinuous, with shallow median concavity. Antennular article 1 with 5 or 6 distal spines: distomesial spine distinctly shorter than upper distolateral spine. Antennal article 1 mesial process distally falling well short of second lateral antennular spine; article 2 distolateral and distomesial spines subequal; article 3 with small to distinct mesial spine, laterally unarmed. Mxp3 merus with 2 prominent spines on flexor margin. P2–4 dactylus extensor margin without upright spines at bases of movable spines. Genetic data. COI, Table 1 . Distribution. New Zealand , Norfolk and Kermadec ridges, at 290– 506 m . Remarks. This species is characterized by the presence of 5 epigastric spines, 3 spines on the anterior branchial margin and the anterior protogastric ridge usually medially interrupted. The species is closely related to P. acastus from the Philippines , Papua New Guinea , Vanuatu , Chesterfield Islands and New Caledonia , P. argus , from French Polynesia , New Caledonia and Chesterfield Islands, P. paula , from SW Indian Ocean, and P. eneus from Indonesia to New Caledonia (see the differences under the Remarks of P. eneus ).