Iphimediidae of New Zealand (Crustacea, Amphipoda) Author Coleman, Charles Oliver 1EC18609-2D14-462B-8E59-B1CE40166FAF Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Invalidenstrasse 43, 10115 Berlin, Germany & urn: lsid: zoobank. org: author: 1 EC 18609 - 2 D 14 - 462 B- 8 E 59 - B 1 CE 40166 FAF & Corresponding author, e-mail: oliver. coleman @ mfn-berlin. de Author Lörz, Anne-Nina 9442484E-43A4-4383-A1A6-AE493087BCA1 National Centre for marine Biodiversity & Biosecurity, National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington 6021, New Zealand E-mail: Anne-Nina. Loerz @ niwa. co. nz & urn: lsid: zoobank. org: author: 9442484 E- 43 A 4 - 4383 - A 1 A 6 - AE 493087 BCA 1 text European Journal of Taxonomy 2013 2013-11-06 62 1 18 journal article 22239 10.5852/ejt.2013.62 4a3616f3-c7cc-426c-8b63-2dac26ccca08 2118-9773 3820698 F38609C6-9244-424B-B692-D18DF5FEBEBD Labriphimedia martinae sp. nov. Figs 7-11 urn:lsid:zoobank.org:act: D8ED7489-8474-4E50-9856-27119A69E933 Material examined Holotype ♂ , 6.5 mm , NIWA 84743 . Locus typicus NEW ZEALAND : TAN0705/136, 14 April 2007 , 43°17’25ˮ S , 175°33’08ˮ W – 43°17’36ˮ S , 175°33’47ˮ E , 638- 644 m . Etymology This species is named for the amiable Ms Martine Willcox, the mother of the son-in-law of the senior author. Description LENGTH. Based on male holotype , 6.5 mm . HEAD ( Fig. 7A ). Eyes ovate; rostrum strongly curved; anterior margin with angular spine, anteroventral corner with an acute long narrow spine. Antenna 1 ( Fig. 7 C-D) peduncular article 1 with a long distomedial spine and a small anterodistal spine; peduncular article 2 with longer dorsal and small spine, with an anterodistal spine; accessory flagellum present, accessory flagellum 1-articulate; article 3 with anterodistal process; article 4 subequal to 3. Antenna 2 ( Fig. 7G ) articles 2 and 3 serrate distomedially. Mouthparts arranged in a cone. Upper lip ( Fig. 7B ) tapering distally, apex asymmetrical. Mandibular body ( Fig. 7E, F, I, H ) tapering distally; incisor not dentate; lacinia mobilis on right side rather stout; molar not triturative, but protruding; palp 3 articulate, ratios of articles 1-3 1:2.75:1.5. Lower lip ( Fig. 8A ) inner lobes absent; lobes tapering distally into pointed apex. Maxilla 1 ( Fig. 8 D-E) palp 1-articulate, much shorter than outer plate, very small scale with an apical seta. Maxilla 2 ( Fig. 8 B-C, F) inner lobe considerably shorter than outer. Maxilliped ( Fig. 8 G-J) inner lobe elongate, surpassing the distal margin of 1st palp article, with setae on the apex and 2 rows of setae along the medial margin; outer plate Fig. 7. Labriphimedia martinae nov. sp. , holotype ♂, 6.5 mm, NIWA 84743. A . Habitus. B . Upper lip. C . Antenna 1 peduncular articles 1-2. D . Peduncular article 3 and flagellum of antenna 1. E . Left mandible, setation of palp omitted. F . Right mandibular palp. G . Antenna 2. H . Right mandibular body. I . Apical mandibular palp article. Scale bars: A = 1 mm, B-G = 100 µm. Fig. 8. Labriphimedia martinae nov. sp. , holotype ♂, 6.5 mm, NIWA 84743. A . Lower lip. B . Outer plate of maxilla 2. C . Inner plate of maxilla 2. D . Left maxilla 1. E . Palp of right maxilla 1. F . Outlines of maxilla 2. G . Palp of maxilliped. H . Inner plate of maxilliped. I . Outer plate of maxilliped. J . Outline of maxillipeds. Scale bars: A-J = 100 µm. Fig. 9. Labriphimedia martinae nov. sp. , holotype ♂, 6.5 mm, NIWA 84743. A . Gnathopod 1. B . Chela of gnathopod 1. C . Gnathopod 2. D . Chela of gnathopod 2. E . Pereopod 3. F . Presumed carpus to dactylus of pereopod 3. Scale bars: A, C, E-F = 100 µm. Fig. 10. Labriphimedia martinae nov. sp. , holotype ♂, 6.5 mm, NIWA 84743. A . Pereopod 4. B . Presumed carpus to dactylus of pereopod 4. C . Pereopod 7. D . Pereopod 6. Scale bars: A-D = 100 µm. Fig. 11. Labriphimedia martinae nov. sp. , holotype ♂, 6.5 mm, NIWA 84743. A . Pereopod 5. B . Pleopod 1. C . Right uropod 2. D . Uropod 1. E . Uropod 3. F . Telson . Scale bars: A-F = 100 µm. tapering distally, bordered with plumose setae apically; palp consisting of 3 long articles and 1 minute distolateral article; 2nd palp article expanded distomedially. PEREON ( Fig. 7A ). Pereonite 1 enlarged, 3-4 x as long as pereonite 2. Pereonites 5-6 posteroventral angle acute; that of pereonite 7 pointed and drawn out. Pereonite 7 without mid-dorsal carina, dorsodistal margin with 2 large pointed spines, space between spines widely excavate, with 1 posteroventral spine. Gnathopod 1 ( Fig. 9 A-B) coxa subrectangular, ventrally truncated and serrate; basis slightly longer than coxa; carpus somewhat longer than propodus, both carpus and propodus narrow; setation restricted to anterior margin of basis and region of chela. Gnathopod 2 ( Fig. 9 C-D) slightly shorter than gnathopod 1; coxa tapering, ventrally truncated, ventral margin with 2 notches with microtrichs; carpus and propodus subequal in length, strongly setose; Pereopod 3 ( Fig. 9 E-F) coxa ventrally rounded, ventral margin weakly serrate; basis and ischium with rounded lobe distomarginally. Pereopod 4 ( Fig. 10 A-B) coxa wide, apically rounded, with angular posteroventral corner, ventral margin serrate; posterior margin with rounded lobe; basis and ischium with rounded lobe distomarginally. Pereopod 5 ( Fig. 11A ) coxa wider than long, bilobate, posterior margin pointed; basis subrectangular, posterior margin straight, weakly serrate, posteroventral corner subquadrate, anterodistal angle pointed; ischium anterodistal angle pointed; merus drawn out posterodistally; carpus expanded distally, slightly shorter than propodus; dactylus not curved much, with small unguis. Pereopod 6 ( Fig. 10D ) coxa bilobate, anterior lobe shorter, with posteroventral spine; basis anterodistally pointed, posterodorsal corner subquadrate, posterior margin weakly serrate, posteroventral corner with small spine; ischium and merus as for pereopod 5. Pereopod 7 ( Fig. 10C ) coxa with posteroventral spine; basis anterodistally pointed, posterodorsal corner rounded, posterior margin weakly serrate, posteroventral corner with large spine; merus and carpus as for pereopod 5. PLEON ( Fig. 7A ). Pleonite 1 with a low, truncated mid-dorsal carina with a small posterior point, with 2 large, pointed spines, space between spines wide. Epimeron 1 posterior margin with 1 mid-lateral spine, posteroventral corner acutely with short point. Pleonite 2 with a low truncated mid-dorsal carina with a small posterior point, dorsodistal margin with 2 large, pointed spines, space between spines wide. Epimeron 2 posterior margin with 1 mid-lateral spine, posteroventral corner pointed. Pleonite 3 with a broadly rounded, large mid-dorsal carina. Epimeron 3 posterior margin without well developed lateral spines, posteroventral corner produced into 1 smooth spine, its dorsal part minutely serrate. Urosomite 1 large with broadly rounded, large mid-dorsal carina with a shallow depression. Urosomite 2 shortest, smooth. Telson ( Fig. 11F ) truncate, with several small notches along the distal margin. Distribution Chatham Rise, New Zealand (South-western Pacific), 638- 644 m .