Fig. 6

Muusoctopus aegir Golikov, Gudmundsson & Sabirov, sp. nov. Female reproductive anatomy. a, holotype BS-319–2012 (late maturing female, mantle length (ML) 43 mm, off the Barents Sea slope): female reproductive tract; b, paratype BS-304–2012 (spent female, ML 26 mm, off the Barents Sea slope): female reproductive tract; c, BIOICE-2033 (early maturing female, ML 21 mm, off Iceland): dissected female reproductive tract; d–f, paratype ICL-A13-570–2017 (pre-spent female, ML 24 mm, off Iceland): ripe ova in shell (d), post-ovulatory follicles (e) and part of the ovary with post-ovulatory follicles and resorbing oocytes (f); g, h, BIOICE-2516–1 (late maturing female, ML 32 mm, off Iceland): late vitellogenic oocytes (g) and part of the ovary with pre-vitellogenic oocytes (h). Scale bars: a = 5 mm, b–h = 1 mm. Abbreviations: do, distal oviduct; ev, early vitellogenic oocyte; lv, late vitellogenic oocyte; mv, mid-vitellogenic oocyte; o, ovary; og, oviducal gland; oo, oviduct opening; pf, post-ovulatory follicle; po, proximal oviduct; pr, pre-vitellogenic oocyte; re, resorbing oocyte; s, stalk