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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).

Fig. 10 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 10. Maximum Likelihood phylogenetic tree of Selachinematidae Cobb, 1915 inferred from 18S rRNA data, using alignments based on secondary structure models using GTR GAMMA for unpaired sites and RNA7A for paired sites.

Fig. 8 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 8. Cobbionema acuminata sp. nov. A. Male paratype head region (ventral side to the right) (SMNH Type-9222). B. Surface view of male holotype head (ventral side to the right) (SMNH Type-9221). C. Anterior part of male holotype (ventral side to the right) (SMNH Type-9221). D. Caudal region of male holotype (SMNH Type-9221). E. Spicule. F. Crura. Scale bar = 20 µm.

Fig. 7 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 7. Cobbionema brevispicula sp. nov. Light micrographs. A. Stoma of male holotype showing stoma armament, arrow pointing to the left ventrosublateral tine (SMNH Type-9219). B. Anterior part of male holotype showing sphincter muscle surrounding the anterior end of posterior stoma chamber (arrow) (SMNH Type-9219). C. Anterior part of a female; arrow pointing to a mandible with heavily cuticularized basal knob (SMNH-182041). D. Cuticle showing no lateral ala (SMNH Type-9219). E. Male tail (SMNH Type-9219). F. Caudal region of male holotype showing spicule (SMNH Type-9219). G. Caudal region of male holotype showing crura (arrow) (SMNH Type-9219).

Fig. 12 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 12. Maximum Likelihood phylogenetic tree of Selachinematidae Cobb, 1915 inferred from 28S rRNA data, using alignments based on secondary structure models using GTR GAMMA for unpaired sites and RNA7A for paired sites.

Fig. 6 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 6. Cobbionema brevispicula sp. nov. A. Female head region (ventral side to the right) (SMNH-182041). B. Surface view of female head (ventral side to the right) (SMNH-182041). C. Surface view of the male holotype head (ventral side to the right) (SMNH Type-9219). D. Anterior part of male holotype (ventral side to the right) (SMNH Type-9219). E. Female caudal region (SMNH-182041). F–G. Male holotype caudal region (SMNH Type-9219). H. Spicule. I. Crura. Scale bar = 20 µm.

Fig. 4. Cobbionema cylindrolaimoides Schuurmans Stekhoven, 1950. A in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 4. Cobbionema cylindrolaimoides Schuurmans Stekhoven, 1950. A. Female head region (ventral side to the left) (SMNH-179211). B. Surface view of female head (ventral side to the left) (SMNH-197211). C. Surface view of male head (ventral side to the right) (SMNH-179212). D. Anterior part of male (ventral side to the right) (SMNH-179212). E. Female mid body region showing anterior branch of the reproductive system and an egg (SMNH-179211). F. Dorsoventral view of spicules (SMNH-179213). G. Lateral view of spicules (SMNH-179214). H. Spicule. I. Crura. J. Female tail (SMNH-179211). Scale bar = 20 µm.

Fig. 3. Cobbionema acrocerca Filipjev, 1922. Light micrographs. A in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 3. Cobbionema acrocerca Filipjev, 1922. Light micrographs. A. Female stoma showing stoma armament, arrow pointing to the left ventrosublateral tine (SMNH-179217). B. Anterior part of a female with arrow pointing to the sphincter muscle surrounding the anterior stoma chamber (SMNH-179217). C. Anterior part of a female with arrow showing the ampulla of the secretory-excretory system (SMNH-179218). D. Caudal region a male showing spicule. E. Caudal region of a male showing the crura (arrow) (SMNH-179218). F. Cuticle showing lateral ala (SMNH-179223). G. Nematode prey inside a female (arrow) (SMNH-179216). H. Male caudal region (SMNH-179217). I. Female caudal region (SMNH-179223).

Fig. 2. Cobbionema acrocerca Filipjev, 1922. A in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 2. Cobbionema acrocerca Filipjev, 1922. A. Female head region (ventral side to the right) (SMNH-179223). B. Surface view of female head (ventral side to the right) (SMNH-179223). C. Surface view of male head (ventral side to the left) (SMNH-179217). D. Anterior part of male (ventral side to the left) (SMNH-179217). E. Female mid-body region showing anterior branch of the reproductive system and lateral ala (SMNH-179216). F. Female caudal region (SMNH-179216). G. Male caudal region (SMNH-179217). H. Spicule. I. Crura. Scale bar = 20 µm.

Fig. 1 in Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)

Fig. 1. Halichoanolaimus robustus (Bastian, 1865). Scanning electron micrographs. Abbreviations: a = anterior row of pointed projections; b = posterior row of pointed projections; c = field of distinct denticles; d = the three tines (one middorsal, two ventrosublateral). Scale bar = 25 µm.