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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.

FIGURE 8 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 8. Gene tree for mtCOI showing proportional differences between individual females of Centropages mohamedi sp. nov. and C. orsinii from neritic waters of the central Red Sea. Numbers at branch points are bootstrap values (i.e., percentage of trees with that branch point among 1000 subreplicates). The specimen numbers correspond to those in Table 1.

FIGURE 7 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 7. SEM micrograph of Centropages mohamedi sp. nov. male from the Red Sea. (A) Rostrum, ventral view; (B) Basis of right leg 4, posterior view; (C) Fused exopodal segments 2 and 3 of male left leg 5; (D) Third exopodal segment of male right leg 5 (serration of distal part indicated by arrow).

FIGURE 5 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 5. Centropages mohamedi sp. nov. Female (holotype). (A) Leg 1; (B) Leg 2; (C) Leg 3; (D) Leg 4; (E) Leg 5; (F) Endopod of left leg 5; (G) Left medial process of second exopodal segment of female leg 5; (H) Right medial process of second exopodal segment of female leg 5. Scale bars in mm.

FIGURE 4 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 4. Centropages mohamedi sp. nov. Female (holotype). (A) Antenna; (B) Mandibular gnathobase; (C) Mandibular palp; (D) Maxillule; (E) Maxilla, (F) Maxilliped. Scale bars in mm.

FIGURE 3 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 3. SEM micrographs of Centropages mohamedi sp. nov. female. (A) Rostrum, lateral view; (B) Urosome, lateral view; (C) Genital double somite, lateral view, (D) Maxillipod basis (middle seta with proximal, spirally located spinule indicated by arrow), lateral view; (E) Medial process of second exopodal segment of female leg 5 indicated by arrow; (F) Enlarged medial process of second expodal segment of female leg 5.

FIGURE 2 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 2. Centropages mohamedi sp. nov. Female (holotype). (A) Habitus, dorsal view; (B) Habitus, lateral view; (C) Rostrum, lateral view; (D) Urosome, dorsal view; (E) Urosome, ventral view; (F) Urosome, lateral view; (G–H) Antennule. Scale bars in mm.

FIGURE 6 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 6. Centropages mohamedi sp. nov. Male (allotype). (A) Habitus, dorsal view; (B) Rostrum, ventro-lateral view; (C) Urosome, dorsal view; (D) Right antennule; (E) Right leg 4; (F) Basis of right leg 4, posterior view; (G) Leg 5, posterior view. Scale bars in mm.

FIGURE 1 in A new species of Centropages (Copepoda: Calanoida: Centropagidae) from the central Red Sea based on morphological and molecular evidence

FIGURE 1. Sampling sites of Centropages mohamedi sp. nov. and C. orsinii off Jeddah and entrance of Obhur Creek, central Red Sea.