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FIG. 5. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 5. — Pseudoniphargus leucatensis n. sp., ♀ holotype: A, right mandible, medial view; B, detail of distal portion of left mandible, ventral view; C, detail of incisor and lacinia of latter; D, maxillule; E, maxilla; F, right maxilliped with unnaturally bent basal endite, posterior view. Scale bar: 0.1 mm.

FIG. 6. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 6. — Pseudoniphargus leucatensis n. sp., ♀ holotype: A, left gnathopod I, medial view; B, right gnathopod II, medial view. Scale bar: 0.1 mm.

FIG. 4. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 4. — Pseudoniphargus leucatensis n. sp., ♀ holotype: A, general aspect, lateral view; B, inset of head with left antennule and antenna attached, lateral view; C, labrum, anterior view; D, paragnaths. Scale bars: A, 0.5 mm; B, 0.2 mm; C, D, 0.1 mm.

FIG. 3 in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 3. — Temperature and salinity profile of the water column at Grotte des Fées de Leucate (Leucate, Aude,France) on December 7, 2003. Layers in gray correspond to pycnoclines.

FIG. 8. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 8. — Pseudoniphargus leucatensis n. sp.: A-G, ♀ holotype; A, right epimeral plates, lateral view; B, right pleopod I, anterior view; C, same showing detail of retinacle; D, left uropod I, anterior view; E, left uropod II, anterior view; F, left uropod III, lateral view; G, telson, dorsal view; H, right uropod III of ♂ paratype 4.41 mm, lateral view. Scale bars: A, B, 0.25 mm; D-F, H, 0.125 mm; G, 0.1 mm.

FIG. 9. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 9. — Pseudoniphargus leucatensis n. sp.: A, left pereopod VII of brooding ♀ paratype 5.19 mm, lateral view; B, same showing detail of nail; C-E, proximal portion of left pereopods V to VII of ♂ paratype, lateral view; F, propodus and nail of right gnathopod I of brooding ♀ paratype 5.19 mm, medial view; G, same showing detail of palm angle, with bifid robust setae on lateral side not represented to unveil row of six short and more slender bifid robust setae not shown in F, medial view. Scale bars: A-E, 0.25 mm; F, G, 0.1 mm.

FIG. 5 in Centropages orsinii Giesbrecht, 1889 (Copepoda, Calanoida, Centropagidae) from an anchialine cave in Vanuatu

FIG. 5. — Centropages orsinii Giesbrecht, 1889 adult male: A, leg 4, posterior view showing right leg, with rami of left leg not drawn; B, basis of right leg 4, lateral view showing processes; C, leg 5, posterior view; D, basis of right leg 4 of male from John Murray expedition (BMNH 1949.12.31.352), lateral view showing processes; E, coxa and basis of right leg 4 of male from Great Barrier Reef expedition (BMNH 1948.4.28.72), posterior view showing processes on basis. Scale bars: A-C, 100 μm; D, E; 50 μm.

FIG. 2 in Centropages orsinii Giesbrecht, 1889 (Copepoda, Calanoida, Centropagidae) from an anchialine cave in Vanuatu

FIG. 2. — Centropages orsinii Giesbrecht, 1889 adult male: A, non-geniculate left antennule, expressed segments 1 to 12; B, left antennule, expressed segments 13 to 17; C, left antennule, expressed segments 18 to 24 (some setal elements missing from apex); D, geniculate right antennule, expressed segments 1 to 13; E, right antennule, expressed segments 14 to 17; F, right antennule expressed segments 18 to 21 (setal elements missing from segment 19, as indicated by scars). Scale bar: 100 μm.

FIG. 1 in Centropages orsinii Giesbrecht, 1889 (Copepoda, Calanoida, Centropagidae) from an anchialine cave in Vanuatu

FIG. 1. — Centropages orsinii Giesbrecht, 1889 adult male: A, habitus, dorsal; B, last prosomite and urosome, dorsal; C, rostrum and frontal filaments, ventral; D, antenna. Scale bars: A, 0.05 mm; B, 250 μm; C, D, 100 μm.

FIG. 4 in Centropages orsinii Giesbrecht, 1889 (Copepoda, Calanoida, Centropagidae) from an anchialine cave in Vanuatu

FIG. 4. — Centropages orsinii Giesbrecht,1889 adult male: A, leg 1, anterior; B, leg 3, anterior;C, endopod of leg 2, anterior.Scale bars:100 μm.

FIG. 3 in Centropages orsinii Giesbrecht, 1889 (Copepoda, Calanoida, Centropagidae) from an anchialine cave in Vanuatu

FIG. 3. — Centropages orsinii Giesbrecht, 1889 adult male: A, mandibular palp; B, mandibular gnathobase; C, maxillule, lacking marginal armature from praecoxal arthrite, posterior; D, praecoxal arthrite of maxillule showing margin setation (only insertion sites of posterior setae shown); E, maxilla (with two long endopodal setae drawn truncated for clarity); F, maxilliped. Scale bars: 100 μm.

Fig. 14. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 14. Macrobrachium xmas n. sp., coloration of live specimens. A, paratype ovigerous female (pocl 21.66 mm) (ZRC 2015.281), Whip Cave; B, C, paratype ovigerous female (pocl 20.20 mm) (QM-W28316), Freshwater Cave (Photographs by: HH Tan).

Fig. 12. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 12. Macrobrachium xmas n. sp., paratype ovigerous female (pocl 20.20 mm) (QM-W28316). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view; C, right second pereiopod, lateral view; D, left second pereiopod, lateral view; E, same, basal part of fingers, dorsal view. Scale bars = 1.0 mm.

Fig. 11. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 11. Macrobrachium xmas n. sp., paratype ovigerous female (pocl 21.66 mm) (ZRC 2015.281). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, right second pereiopod, lateral view; D, left second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 10. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 10. Macrobrachium xmas n. sp., paratype male (pocl 13.22 mm) (RUMF-ZC-2802). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, right second pereiopod, lateral view; D, left second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 9. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 9. Macrobrachium xmas n. sp., paratype male (pocl 16.26 mm) (ZRC 2015.282). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, left second pereiopod, lateral view; D, same, basal part of fingers, dorsal view; E, right second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 7. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 7. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). Third to fifth pereiopods, lateral view. A, third pereiopod, lateral view; B, same, posterior part of propodus, lateral view; C, fourth pereiopod, lateral view; D, same, posterior part of propodus, lateral view; E, fifth pereiopod, lateral view; F, same, posterior part of propodus, lateral view. Scale bars = 1.0 mm.

Fig. 4. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 4. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). A, rostrum and carapace, lateral view; B, tip of rostrum, lateral view; C, rostrum, anterior part of carapace and cephalic appendages, dorsal view; D, epistome, venral view; E, abdomen and telson, and left uropod, lateral view: F, posterior margin of sixth abdominal sternite and interuropodal sclerite, ventrolateral view; G, same, ventral view; H, telson, dorsal view; I, posterior margin of telson, dorsal view; J, eye (left side), ventral view (above), dorsal view (below). Scale bars = 1.0 mm.

Fig. 6. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 6. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). Chelipeds. A, first pereiopod, lateral view; B, chela of first pereiopod, ventral view; C, right second pereiopod, lateral view; D, same, tip of dactylus, dorsal view; E, same, basal part of fingers, dorsal view; F, left second pereiopod, lateral view; G, same, tip of dactylus, dorsal view; H, same, tip of fixed finger, dorsal view; I, same, basal part of fingers, dorsal view. Scale bars = 1.0 mm.