Some new and known species of Lernanthropidae (Copepoda, Siphonostomatoida) parasitic on Japanese actinopterygian fishes, with a revision of two known species of the family

in Crustaceana
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Six species of Lernanthropidae parasitic on the branchial lamellae of Japanese actinopterygian fishes are (re-)described. They are: Lernanthropinus maajii sp. nov. from Trachurus japonicus (Temminck & Schlegel, 1844) (Carangidae), L. sphyraenae (Yamaguti & Yamasu, 1959) from Sphyraena pinguis Günther, 1874 and S. japonica Bloch & Schneider, 1801 (Sphyraenidae), Lernanthropsis mugilii (Shishido, 1898) from Mugil cephalus Linnaeus, 1758 (Mugilidae), Lernanthropus seriolii Shishido, 1898 from Seriola lalandi Valenciennes, 1833 (Carangidae), Sagum brotulae sp. nov. from Brotula multibarbata Temminck & Schlegel, 1846 (Ophididae), and S. epinepheli (Yamaguti & Yamasu, 1960) from Epinephelus akaara (Temminck & Schlegel, 1842) (Serranidae). Lernanthropinus holiulini sp. nov. and Sagum pillaisebastiani sp. nov. are herein established for Ho et al.’s (2008) Lernanthropinus sphyraenae and Pillai & Sebastian’s (1967) Sagum epinepheli, respectively.

Some new and known species of Lernanthropidae (Copepoda, Siphonostomatoida) parasitic on Japanese actinopterygian fishes, with a revision of two known species of the family

in Crustaceana

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References

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Figures

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    Lernanthropinus maajii sp. nov., female. A, habitus, dorsal; B, same, ventral; C, same, lateral; D, urosome, dorsal; E, antennule, dorsal; F, antenna and adjacent structure, ventral; G, mouthparts, ventral; H, maxilla, ventral; I, maxilliped, ventral; J, leg 1, ventral; K, leg 2, ventral. Abbreviations: ap, adhesion pad; gp, gonopore; md, mandible; mx1, maxillule; oc, oral cone; pap, postantennal process; p3-5, leg 3-5. Scale bars: 1 mm for A-C; 0.2 mm for D; 0.1 mm for F; 0.05 mm for E, G-K.

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    Lernanthropinus maajii sp. nov., male. A, habitus, dorsal; B, caudal ramus, dorsal; C, antennule and postantennal process, dorsal; D, antenna, ventral; E, mouthparts, ventral; F, maxilla, ventral; G, maxilliped, ventral; H, leg 1, ventral; I, leg 2, ventral. Scale bars: 0.5 mm for A; 0.01 mm for D, G; 0.05 mm for B, E, F, H, I; 0.03 mm for C.

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    Lernanthropinus sphyraenae (Yamaguti & Yamasu, 1959), female. A, habitus, dorsal; B, same, lateral; C, same, ventral; D, urosome, dorsal; E, antennule, dorsal; F, antenna, ventral; G, mouthparts, ventral; H, maxilla, ventral; I, maxilliped, ventral; J, leg 2, ventral; K, leg 1, ventral. Additional abbreviations: cd, copulatory duct; sp, spermatophore. Scale bars: 1 mm for A-C; 0.2 mm for D; 0.1 mm for F-K; 0.05 mm for E.

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    Lernanthropinus sphyraenae (Yamaguti & Yamasu, 1959), male. A, habitus, dorsal; B, caudal ramus, dorsal; C, antennule, ventral; D, antenna, ventral; E, mouthparts, ventral; F, maxilla, ventral; G, maxilliped, ventral; H, leg 1, ventral; I, leg 2, ventral. Scale bars: 0.5 mm for A; 0.1 mm for B, D, G; 0.05 mm for C, E, F, H, I.

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    Lernanthropinus sphyraenae (Yamaguti & Yamasu, 1959), copepodid IV female. A, body, dorsal; B, antennule, ventral; C, postantennal process; ventral; D, mouthparts, ventral; E, maxilla, ventral; F, maxilliped, ventral; G, leg 1, ventral; H, leg 2, ventral; I, leg 3, ventral. Scale bars: 0.5 mm for A, I; 0.1 mm for D-H; 0.05 mm for C; 0.03 mm for B.

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    Lernanthropsis mugilii (Shishido, 1989). A-E, female: A, habitus, dorsal; B, anterior portion of cephalothorax, ventral; C, antennule and postantennal process, dorsal; D, leg 1, ventral; E, leg 2, ventral; F-N, male: F, habitus, dorsal; G, anterior portion of cephalothorax, ventral; H, antennule and postantennal process, dorsal; I, caudal ramus, dorsal; J, mouthparts, ventral; K, maxilla, ventral; L, maxilliped, ventral; M, leg 1, ventral; N, leg 2, ventral. Scale bars: 1 mm for A, F; 0.5 mm for B, G; 0.2 mm for L; 0.1 mm for C-E, H-K M, N.

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    Sagum brotulae sp. nov., female. A, habitus, dorsal; B, same, ventral; C, urosome, dorsal; D, antennule, ventral; E, antenna and adhesion pad, ventral; F, mouthparts, ventral; G, maxilla, ventral; H, maxilliped, ventral; I, leg 1, ventral; J, leg 2, ventral; K, leg 3, ventral; L, leg 4, dorsal; M, caudal ramus, dorsal. Scale bars: 1 mm for A, B; 0.5 mm for K, L; 0.3 mm for C; 0.2 mm for E; 0.1 mm for F-J, M; 0.05 mm for D.

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    Sagum epinepheli (Yamaguti & Yamasu, 1960), female. A, habitus, dorsal; B, urosome, dorsal; C, antennule, ventral; D, antenna, ventral; E, mouthparts, ventral; F, maxilla, ventral; G, maxilliped, ventral; H, leg 1, ventral; I, leg 2, ventral; J, leg 3, ventral; K, leg 4, ventral. Additional abbreviation: cp, copulatory pore. Scale bars: 1 mm for A, J, K; 0.2 mm for B, D; 0.1 mm for C, E-I.

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