The Lampropidae (Crustacea: Cumacea) of the World Author Gerken, Sarah text Zootaxa 2018 2018-06-01 4428 1 1 192 journal article 22652 10.11646/zootaxa.4428.1.1 e10e53f2-0e1b-46f6-8b0f-af19d5529711 1175-5326 3769771 2419A7F0-5AED-47EC-86BB-06AADB2A4BD9 Platytyphlops bamberi n. sp. ( Figs 54–55 ) Type material . Holotype : subadult female, NIWA 120051 , 44°30’S , 174°18.6’E , 760 m , NZOI station S147, Chatham Rise , New Zealand . Paratype : subadult female, dissected, NIWA 120052 , collected with holotype . Diagnosis . Carapace without lateral ridges, thickly covered in large spines dorsal of marginal carina, with sparser smaller spines ventral of marginal carina, marginal carina dentate, ridge absent on pseudorostrum; eyelobe without lenses or timidities, with medial line of spines. Antennule article 1 not expanded; accessory flagellum equal to main flagellum length. Telson 0.7 uropod peduncles, with 3 terminal setae, central seta short. Uropod peduncles with 15 medial setae. Adult male unknown. Description. Holotype subadult female, NIWA 120051; paratype subadult female, NIWA 120052. Subadult female, 11.8 mm . Carapace thickly covered with spines dorsal of marginal carina, with smaller sparser spines ventral of marginal carina, posterior dorsolateral expansion, sharp dorsal crest on frontal lobe continuing onto eyelobe; pseudorostral lobes 0.3 carapace length; eyelobe 0.07 carapace length, with medial line of spines; carapace 1.4 length of pereonites; pereonites with spines dorsally; pleonites with dorsal small spines ( Fig. 54 A–B). Paratype subadult female, NIWA 120052 . Antennule peduncle article 1 subequal to articles 2 and 3 together, margin with spines, with plumose setae; article 2 1.3 article 3 length, without spines, with plumose setae; article 3 with plumose setae; main flagellum of 7 articles, shorter than peduncle, with simple setae and 2 small aesthetascs terminally; accessory flagellum of 4 articles, with simple setae ( Fig. 54C ). Antenna of 4 articles; article 1 without spines, unarmed; article 2 with 6 pappose and 1 simple setae; article 3 with 2 pappose setae; article 4 2.0 length of article 3, with 2 small simple setae terminally ( Fig. 54D ). Mandible navicular, with 11 microserrate setae medially ( Fig. 54E ). Maxillule with 2 endites; outer endite with 8 stout setae; inner endite with 3 simple and 1 tricuspid setae; palp with 2 setae ( Fig. 54F ). Maxilla not seen. Maxilliped 1 basis produced distally as broad lobe, medial margin with 3 pappose and 2 hook setae, 1 stout seta distally; ischium absent; merus with 2 plumose setae laterally; carpus 1.3 merus length, with plumose and comb setae medially, plumose seta laterally; propodus 0.8 carpus length, with plumose setae; dactylus 0.6 propodus length, with simple setae ( Fig. 54G ). Maxilliped 2 basis equal to all other articles together, medial margin with 4 pappose setae, distal margin with 2 pappose and 3 plumose setae; ischium unarmed; merus 3.0 ischium length, with plumose seta laterally; carpus 2.5 merus length, with plumose setae medially, plumose seta laterally; propodus 0.7 carpus length, with plumose and simple setae; dactylus 0.5 propodus length, with simple setae terminally ( Fig. 55A ). Maxilliped 3 basis 0.8 all other articles together, medial margin with plumose setae, lateral margin with simple setae, with 4 plumose setae at distal corner; ischium 0.06 basis length, unarmed; merus 2.7 ischium length, with plumose seta medially, 2 plumose setae laterally; carpus 3.1 merus length, with sparsely plumose setae medially, 2 plumose setae laterally; propodus 0.7 carpus length, with sparsely plumose setae medially, plumose setae laterally; dactylus 0.4 propodus length, with 4 simple setae terminally; exopod equal to basis length, basal article with 2 plumose setae, flagellum with plumo-annulate setae ( Fig. 55B ). Pereopod 1 broken, basis with plumose setae on margins; exopod 0.7 basis length, basal article with 5 plumose setae, flagellum with plumo-annulate setae ( Fig. 55C ). Pereopod 2 basis shorter than all other articles together, with 12 plumose setae; ischium 0.06 basis length, unarmed; merus 3.0 ischium length, with 1 stout microserrate, 1 plumose and 2 simple setae; carpus 3.2 merus length, with 13 microserrate and 1 plumose setae; propodus 0.2 carpus length, with simple seta; dactylus broken, with simple setae; exopod 0.6 basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Fig. 55D ). FIGURE 54. Platytyphlops bamberi n. sp. Holotype subadult female NIWA 120051, A, side view. Paratype subadult female NIWA 120052, B, dorsal view; C, antennule; D, antenna; E, mandible; F, maxillule; G, maxilliped 1. Scale bars full body 1.0 mm, all others 0.1 mm. FIGURE 55. Platytyphlops bamberi n. sp. Paratype subadult female NIWA 120052, A, maxilliped 2; B, maxilliped 3; C, basis pereopod 1; D, pereopod 2; E, pereopod 3; F, pereopod 5; G, terminal seta of pereopod 5; H, telson and uropods. Scale bars 0.1 mm. Pereopod 3 basis 1.5 all other articles together, with 2 plumose setae; ischium 0.06 basis length, with plumose seta; merus 4.8 ischium length, with 5 plumose setae; carpus 0.5 merus length, with 2 plumose and 2 annulate setae; propodus 0.8 carpus length, with annulate seta; dactylus 0.7 propodus length, with 2 simple and 1 stout microserrate setae terminally; exopod rudimentary, 0.09 basis length, of 2 articles with 2 simple setae ( Fig. 55E ). Pereopod 4 broken, not figured. Pereopod 5 basis 1.3 all other articles together, with 3 simple setae; ischium 0.1 basis length, with 2 plumose setae; merus 1.6 ischium length, with simple seta; carpus 1.3 merus length, with1 simple and 2 annulate setae; propodus 0.7 carpus length, with annulate seta; dactylus 0.6 propodus length, with 2 simple and 1 stout microserrate setae terminally ( Fig. 55 F–G). Telson 1.4 length of pleonite 6, with 3 lateral setae with single subterminal setule, 3 simple terminal setae, central seta short, outer pair more than twice length of central seta ( Fig. 55H ). Uropod peduncles 2.0 pleonite 6 length, 1.4 telson length, with 15 medial setae with single subterminal setule. Uropod endopod of 3 articles, 1.1 peduncle length; article 1 4.1 length of article 2, with 13–17 medial setae with single subterminal setule; article 2 with 5 medial setae with single subterminal setule; article 3 0.8 article 2 length, with 4 medial setae with single subterminal setule. Uropod exopod of 2 articles, 0.9 length of endopod; article 1 0.2 length article 2, with simple seta; article 2 with many long slender simple setae ( Fig. 55H ). Etymology . The new species is named in honor of the late Roger Bamber, who was an excellent and productive taxonomist on the Tanaidacea and other peracarid groups. Depth. 760 m . Distribution . Chatham Rise, New Zealand , 44°30’S , 174°18.6’E . Remarks . Platytyphlops bamberi , found in New Zealand waters, is most similar to P. echinatus , from Australian waters, but can be distinguished by the presence of spines ventral of the marginal carina and the unequal terminal setae on the telson; P. echinatus has no spines on the carapace ventral of the marginal carina, and the telson terminal setae are subequal in length.