Porroecia cf. porrecta ( Claus, 1890 )

Chavtur, Vladimir G. & Bashmanov, Alexander G., 2018, Pelagic ostracods of the new subtribe Conchoeciina (Ostracoda, Crustacea) from the North Pacific, Zootaxa 4516 (1), pp. 1-127 : 80-81

Porroecia cf. porrecta ( Claus, 1890)

( Figs. 37 C–G)

Studied material. RV Akademik Keldysh, 22th Cruise: MIMB 18352 /11, 18352/12— 2 adult males (1.43 and 1.42 mm) and 18352/13, 18352/14— 2 adult females (1.62 and 1.70 m), station 2343, sample 83, 18°47.37´N– 155°10.9´W, total catch 2000–0 m, depth 5000 m, 4 September , 1990.

Remarks (table 3). In both sexes the carapace is more elongated (height about 43–44% in the male and 42– 43% in the female), with more noticeable sculpture than that in our specimens of P. porrecta . All limbs of specimens of P. cf. porrecta are similar to those of P. porrecta .

Distribution. C. cf. porrecta is recorded only at 18°47.37´N– 155°10. 9´W (total catch 2000–0 m) ( Fig. 38 ).

Figures

FIGURE 37. Porroecia porrecta (Claus, 1890) (Adult male: A and B—18352/2); P. cf. porrecta Claus, 1890 (Adult female: C and E—MIMB 18352/13; F and G—MIMB 18352/14. Adult male: D—MIMB 1852/1); and P. affinis Chavtur, sp. nov. Chavtur (Adult male: H and K—MIMB 18355/5; I—MIMB 18355/6; J and L—MIMB 18355/2). A—distal half of frontal organ and first antenna; B—“a”- and “b”-setae processus mamillaris of endopodite on second antenna; C and D—left valve of carapace in lateral view; E—carapace in ventral view; F and G—anterior and posterior parts of right valve of carapace in lateral view; H and I—right valve of carapace in lateral view; J—endopodite of right second antenna; K and L—clasping organs of right and left second antenna.

FIGURE 38. Map showing locations of stations at which Porroecia porrecta (Claus, 1890), P. cf. porrecta (Claus, 1890) and P. affinis Chavtur, sp. nov. Claus, 1890 were sampled.