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Fig. 17 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 17. Map of the New Zealand region with 1000 m water depth contours. A. Location of the sites sampled on Chatham Rise and Challenger Plateau. – B-F. Distributions of individual species. – B. Pseudocheironchus ingluviosus gen. et sp. nov. C. Synonchiella rotundicauda sp. nov. D. Cobbionema trigamma sp. nov. E. Gammanema agglutinans sp. nov. F. Bendiella thalassa gen. et sp. nov.

Fig. 16 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 16. Bendiella thalassa gen. et sp. nov. Light micrographs. A. Lateral view of male cuticle. B. Female head, showing shape of buccal cavity. C. Female head, showing details of rhabdions in anterior and posterior buccal cavity. Scale bar = 10 μm.

Fig. 14 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 14. Bendiella thalassa gen. et sp. nov. A. Surface view of male head. B. Surface view of female head. C. Female head, showing buccal cavity. D. Posterior body region of male. E. Spicule and gubernaculum. F. Posterior body region of female. G. Anterior body region of male. Arrow shows position of lateral hypodermal gland near posterior end of intestine. Scale bar: A-C, G = 25 μm; D, F = 32 μm; E = 13 μm.

Fig. 11 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 11. Gammanema agglutinans sp. nov. A. Surface view of female head. B. Surface view of male head. C. Female head, showing buccal cavity. D. Female head, showing buccal cavity. E. Entire male. F. Spicule and gubernaculum. Scale bar: A-D = 30 μm; E = 40 μm; F = 18 μm.

Fig. 9 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 9. Cobbionema trigamma sp. nov. A. Entire holotype. B. Entire female. C. Entire male paratype. Scale bar = 100 μm.

Fig. 13 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 13. Gammanema agglutinans sp. nov. Light micrographs. A. Entire male. B. Buccal cavity of female, showing paired rhabdions in posterior buccal cavity. C. Posterior region of pharynx, cardia, and anterior region of intestine of female. D. Buccal cavity of female, showing pointed projections at posterior extremity of rhabdions in anterior buccal cavity. E. Cuticle of male, showing punctations, spines, and somatic setae. Scale bar A = 30 μm; B, D = 15 μm; C = 12 μm; E = 7 μm.

Fig. 12 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 12. Gammanema agglutinans sp. nov. A. Entire female. B. Entire male. Scale bar: A = 60 μm; B = 50 μm.

Fig. 8 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 8. Cobbionema trigamma sp. nov. A. Surface view of holotype head. B. Surface view of paratype male head. C. Buccal cavity of paratype male. D. Holotype anterior body region. E. Spicule and gubernaculum of holotype. F. Holotype posterior body region. G. Paratype male posterior body region. H. Female posterior body region. Scale bar: A-C = 30 μm; D = 80 μm; E = 36 μm; F-G = 70 μm; H = 40 μm.

Fig. 4 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 4. Pseudocheironchus ingluviosus gen. et sp. nov. A. Lateral view of anterior body region of male. B. Sublateral view of anterior body region of female. C. Surface view of female head. D. Surface view of male head. E. Male posterior body region. F. Spicule and gubernaculum. G. Female posterior body region. Arrow shows location of ejaculatory glands. Scale bar: A-B = 25 μm; C-D = 15 μm; E, G = 62 μm; F = 10 μm.

Fig. 3 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 3. Synonchiella rotundicauda sp. nov. Light micrographs. A. Anterior body region of male showing buccal cavity. B. Tail of male. C. Spicular apparatus. Scale bar = 25 μm.

Fig. 10 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 10. Cobbionema trigamma sp. nov. Light micrographs. A. Buccal cavity of holotype. B. Cuticle of holotype, showing cuticle pores. Scale bar: A = 25 μm; B = 12 μm.

Fig. 7 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 7. Pseudocheironchus ingluviosus gen. et sp. nov. Light micrographs. A. Female head region showing buccal cavity and mandibles. B. Female posterior pharyngeal bulb and anterior portion of intestine. C. Male posterior body region showing right spicule and cup-shaped supplements. D. Detail of pre-cloacal supplements. Scale bar: A-C = 30 μm; D = 10 μm.

Fig. 6 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 6. Pseudocheironchus ingluviosus gen. et sp. nov. A. Entire male. B. Entire female. Scale bar = 100 μm.

Fig. 5 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 5. Pseudocheironchus ingluviosus gen. et sp. nov. A. En face and side views (left and right, respectively) of mandibles. B. Sub-lateral view of female head showing position of mandibles and cuticularised ridges. a = mandible axis; m = membrane; r = cuticularised ridge; t = teeth. Scale bar: A = 10 μm; B = 20 μm.

Fig. 1 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 1. Synonchiella rotundicauda sp. nov. A. Anterior body region of female. B. Male head. C. Surface view of male head. D. Surface view of female head. E. Male posterior body region. F. Female posterior body region. G. Mandibles, en face (left) and lateral (right) views. H. Spicule and gubernaculum. Arrow shows position of duct connecting anterior end of marginal tube and buccal cavity. Scale bar: A, E-F = 25 μm; B-D = 15 μm; G = 8 μm; H =13 μm.

Fig. 2 in Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand

Fig. 2. Synonchiella rotundicauda sp. nov. A. Entire male. B. Female reproductive system. Scale bar: A = 150 μm; B = 75 μm.

Fig. 13 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 13. Bayesian phylogenetic tree of Selachinematidae Cobb, 1915 inferred from 28S rRNA data, using alignments based on secondary structure models using REV GAMMA for unpaired sites and RNA16A for paired sites.

Fig. 11 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 11. Bayesian phylogenetic tree of Selachinematidae Cobb, 1915 inferred from 18S rRNA data, using alignments based on secondary structure models using REV GAMMA for unpaired sites and RNA16A for paired sites.

Fig. 9 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 9. Cobbionema acuminata sp. nov. Light micrographs. A. Stoma of male holotype (SMNH Type-9221) showing stoma armament, arrow pointing to the right ventrosublateral tine. B. Anterior part of a male showing sphincter muscle surrounding the anterior stoma chamber (arrow). C. Stoma of male holotype (SMNH Type-9221) showing the arrangement of the pointed projections and the left ventrosublateral tine. D–E. Caudal region of male paratype (SMNH Type-9222) showing the crura (arrow) and spicule. F. Male tail, holotype (SMNH Type-9221).

Fig. 5. Cobbionema cylindrolaimoides Schuurmans Stekhoven, 1950. Light micrographs. A in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 5. Cobbionema cylindrolaimoides Schuurmans Stekhoven, 1950. Light micrographs. A. Female stoma showing stoma armament, arrow pointing to the right ventrosublateral tine (SMNH-179211). B. Anterior part of a female showing sphincter muscle surrounding the anterior stoma chamber (arrow) (SMNH-179212). C. Anterior part of a female with arrow showing the ampulla of the secretory-excretory system (SMNH-179211). D. Male stoma showing buccal armament (SMNH-179213). E. Cuticle showing lateral ala (SMNH-179211). F. Caudal region of a male showing spicule and crura (SMNH-179214). G. Male tail (SMNH-179214). H. Female tail (SMNH-179212).