. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic Spinocalanus spinosus, female Figure 84.—PI; sample 5 (Table 3); scale D. 3-4 rows of spines. B2 inner surface with cluster of thin setules. P2 Re3 with 2 distal rows of short spines on posterior surface. P3 Re2 with midlength oblique row of strong spines and distal row of denticles. Re3 with 3 evenly spaced rows of short spines. Ri3 with 2 rows of strong spines. P4 Re2 with midlength oblique row of strong spines and dista
. Calanoid copepods of the genera Spinocalanus and Mimocalanus from the central Arctic Ocean, with a review of the Spinocalanidae / David M. Damkaer. Copepoda Arctic Spinocalanus spinosus, female Figure 84.—PI; sample 5 (Table 3); scale D. 3-4 rows of spines. B2 inner surface with cluster of thin setules. P2 Re3 with 2 distal rows of short spines on posterior surface. P3 Re2 with midlength oblique row of strong spines and distal row of denticles. Re3 with 3 evenly spaced rows of short spines. Ri3 with 2 rows of strong spines. P4 Re2 with midlength oblique row of strong spines and distal row of smaller spines. Re3 with 3 evenly spaced rows of spines, proximal spines longest, distal spines shortest. Re terminal seta with following number of primary teeth: P2 (30-36); P3 (28-33); P4 (29-32). Male.—Length mm (Figs. 78, 79). Prosome anterior irregular in dorsal view, posterior somewhat rectangular; in lateral view with gentle forward slope. Ce and Thl partly fused. Prosome length 1% times urosome. Caudal rami about as long as wide. Al reaching end of prosome; segment 1 with con- spicuous cluster of setules on anterodorsal surface. IV-2s, 2e; Vm-2s, 2e; XV-2s, le; XIX-ls, le; right XX-0; left XX-le; remainder as Table 4. Mn B2 without distal setules; 2 short setae on inner margin. Ril surface setules longer than on female. Segmentation and setation of Re and Ri as on female. Blade (Fig. 80) reduced; ventral tooth in some specimens larger than figured. Mxl very fragile, gnathobase reduced to 1-2 small spines on knob. Mx2 not robust; short, thin outer seta. Some inner setae of reduced size, but probably number as on female. Mxp (Fig. 81) with reduced size of setae; relatively fragile. Ri4-5 outer setae short and flat; spinules on in- ner edge of Ri5 as on female. PI Bl surface without setules, but hairs longer than on female. B2 surface without setules, inner margin hairs shorter than on female. Re3 posterior surface spines relatively longer than on fema
Size: 1007px × 2482px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionamericana, bookleafnumber52, books
