. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic 37. Spinocalanus usitatus Park, 1970 (Figures 137-140) Spinocalanus pteronus Park, 1970, p. 487, fig. 43-50. Spinocalanus usitatus Park, 1970, p. 487-489, fig. 51-54. Type Holotype, female ( mm), USNM 123785. TYPE LOCALITY: Caribbean Sea, 487-950 m. Material Studied: 1 female ( mm), sample 31 (Table 3); 1 female ( mm), sample 32; 1 female ( mm), sample 34; holotype, female ( mm), sample 55; 2
. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic 37. Spinocalanus usitatus Park, 1970 (Figures 137-140) Spinocalanus pteronus Park, 1970, p. 487, fig. 43-50. Spinocalanus usitatus Park, 1970, p. 487-489, fig. 51-54. Type Holotype, female ( mm), USNM 123785. TYPE LOCALITY: Caribbean Sea, 487-950 m. Material Studied: 1 female ( mm), sample 31 (Table 3); 1 female ( mm), sample 32; 1 female ( mm), sample 34; holotype, female ( mm), sample 55; 2 paratypes, females (, mm), sam- ple 56. Also the following type specimens of Spinocalanus pteronus: holotype, female ( mm) and 1 paratype, female ( mm), sample 54; 5 paratypes, females ( mm, mean = mm), sample 59. Description PI Ri with 2 inner setae; P2 Ri2 with 1 outer seta. Female.—Length mm (Figs. 137, 138). Body similar to S. spinosus; prosome in dorsal view somewhat robust ovoid, head slightly truncate; in lateral view with abrupt forward slope. Th4 and Th5 separate; Th5 lateral corners rounded, not prolonged. Thl-Th4 with lateral spinules, number decreasing posteriorly, approximately even right and left. Prosome length 2V2 -3 times urosome. Al incomplete on specimens examined. A2 Rel with 2 setae. Mx2 (Fig. 139) as on S. spinosus except posterior surface of lobe-5 base with spines. Mxp (Fig. 140) as on S. spinosus except Bl with transverse spine-comb on outer edge; oblique row of setules on midanterior surface; distal hump with oblique row of spinules on anterior surface; posterior surface near distal outer edge with transverse row of setules. B2 with strong transverse spine-comb; longitudinal row of spinules. Remaining segments as on S. spinosus. Pi as on S. spinosus. Male.—Unknown. Remarks Park (1970) described a new species, S. pteronus, apparently differing from S. usitatus only by the presence, in S. pteronus, of laterall
Size: 892px × 2802px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionamericana, bookleafnumber70, books
