New Amphipod Crustaceans From The Indo-West Pacific (Amathillopsidae: Eusiridae: Iphimediidae) Author Lowry, J. K. Author Myers, A. A. text Raffles Bulletin of Zoology 2003 51 2 219 256 journal article 10.5281/zenodo.4619401 2345-7600 FF91FFEEFF9DDF128D2BFFDF5B78F067 4619401 Iphimedia maitrensis , new species ( Figs. 18-20 ) Material examined. – Holotype – sex unknown, 3.6 mm , AM P46983, off Ilôt Maitre , New Caledonia , 22 20.57’S 166 25.43’E , dead coral, 20 m , coll. ORSTOM divers, 7 Nov.1995 , stn NCL- 40. Type locality. – Ilôt Maitre , South-east Lagoon , New Caledonia . Description. – Head laterocephalic margin with sharp spine, ventrolateral corner notched. Antenna 1 peduncular article 1 with posterodorsal spines, without posteroventral spine; peduncular article 2 without posterodorsal spine, without posteroventral spine; accessory flagellum absent. Maxilla 1 palp reduced, shorter than outer plate, 2-articulate. Pereon . Pereonite 1 enlarged. Gnathopod 1 coxa small, ventrally truncated, ventral margins smooth. Gnathopod 2 coxa small, ventrally truncated, ventral margins smooth. Pereopod 3 coxa ventrally truncated or ventrally rounded, ventral margins smooth. Pereopod 4 coxa ventral margins smooth. Pereopod 5 coxa posteroventral corner subquadrate; basis posterodorsal corner rounded, posterior margin without spines, weakly serrate, posteroventral corner subquadrate; merus posteroventral lobe not or very slightly produced along carpus. Pereopod 6 coxa posteroventral corner rounded; basis posterodorsal corner rounded, posterior margin without spines, weakly serrate, posteroventral corner subquadrate; merus posteroventral lobe not produced. Pereopod 7 coxa with posteroventral spine, or subquadrate; basis posterodorsal corner rounded, posterior margin without spines, weakly serrate or strongly serrate, posteroventral corner grossly excised, bounded by 2 large spines. Pereonite 7 without middorsal carina, dorsodistal margin slightly to strongly produced, with 2 large spines, without posteroventral spine. Pleon . Pleonites 1-3 without mid-dorsal carina, dorsodistal margin slightly to strongly produced, with 2 large spines. Epimeron 1 posterior margin without mid-lateral spines; posteroventral corner subquadrate or rounded. Epimeron 2 posterior margin without mid-lateral spines, posteroventral corner rounded. Epimeron 3 posterior margin without lateral spines, posteroventral corner serrate, notched. Telson notched, longer than broad, parallel sided, with pair of dorsodistal fine setae. Fig. 18. Iphimedia maitrensis , new species , unknown sex, 3.6 mm, AM P46983, off Ilôt Maitre, New Caledonia. Fig. 19. Iphimedia maitrensis , new species , unknown sex, 3.6 mm, AM P46983, off Ilôt Maitre, New Caledonia. Scale bar = 0.1mm. Fig. 20. Iphimedia maitrensis , new species , unknown sex, 3.6 mm, AM P46983, off Ilôt Maitre, New Caledonia. Scale bar = 0.2 mm, uropods; telson = 0.1mm. Remarks. – This species can be distinguished from all other described world species of Iphimedia by the following combination of characters: coxa 5 posteroventral corner subquadrate, pereonite 7 dorsodistal margin with 2 large spines and epimeron 3 posteroventral corner serrate. Distribution. – New Caledonia . Etymology. – Named for Ilôt Maitre, the type locality.