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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.

FIGURE 2 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 2. Pseudoniphargus djemoi sp. n. A, pereopod 4 of female 1 (6,5 mm); B, pereopod 7 of male 1 (6 mm) with detail of basis (B1), propodus and dactylus (B2); C, pereopod 5 of male 1 with detail of propodus and dactylus (C1); D, pereopod 6 of male 1 with detail of basis (D1), propodus and dactylus (D2); E, Antenna 2 of male 1.

FIGURE 4 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 4. Pseudoniphargus djemoi sp. n. A, maxillipeds of male 2 (5,5 mm), with detail of distal part of inner plates (A1); B, left mandible of female 1 (6,5 mm); C, right mandible of female 1 (6,5 mm); D–F, epimera 1 to 3; G, labrum of male 2 (5,5 mm); H, labium of male 2 (5,5 mm); I, maxilla 1 of female 1 (6,5 mm).

FIGURE 3 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 3. Pseudoniphargus djemoi sp. n. A, uropod 3 of female 1 (6,5 mm); B, uropod 3 of male 2 (6,5 mm); C, telson of female 1 (6,5 mm); D, telson of male 1 (6 mm); E, uropods 1 and 2 of female 1 (6,5 mm); F,antenna 1 of female 2 (6 mm) with detail of accessory flagellum (F1), and apex of flagellum (F2); G, antenna 1 of male 1 (6 mm) with detail of apex of flagellum (G1) and accessory flagellum (G2); H, uropods 1 and 2 of male 1 (6 mm).

FIGURE 5 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 5. Pseudoniphargus djemoi sp. n., male 1 (6 mm). A, gnathopod 1; B, pereopod 4, C, gnathopod 2.

FIG. 2 in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 2. — Profile of Grotte des Fées de Leucate (Leucate, Aude, France). Survey: F. Bréhier, D. Gramont and G. Tixier.

FIG. 7. — Pseudoniphargus leucatensis n in A new species of Pseudoniphargus (Crustacea, Amphipoda, Melitidae) from an anchialine cave on the French Mediterranean coast

FIG. 7. — Pseudoniphargus leucatensis n. sp., ♀ holotype: A, left pereopod III, lateral view; B, same showing detail of nail, medial view; C, left pereopod IV, lateral view; D, same showing detail of nail, medial view; E, right pereopod V, lateral view; F, same showing detail of nail, lateral view; G, left pereopod VI, lateral view; H, same showing detail of nail, lateral view. Scale bar: A, C, E, G, 0.25 mm; B, D, F, H, 0.125 mm.

FIGURE 1 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 1. Pseudoniphargus djemoi sp. n. Habitus of female 3 (6 mm).

FIGURE 6 in A new groundwater species of Pseudoniphargus (Amphipoda: Pseudoniphargidae) fromAlgeria

FIGURE 6. Distribution of African species of Pseudoniphargus species.