Orbiniella annulata Hartman 1967

• Main Author: Blake, James A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Orbiniidae; Orbiniella; Orbiniella annulata; Antarc*; Antarctica; Drake Passage
• Online Access: https://doi.org/10.5281/zenodo.4901825; http://treatment.plazi.org/id/8F2387DD0679097DFF31F9CDFC0FFE34

Orbiniella annulata (Hartman, 1967) Figure 54 A–C Falklandiella annulata Hartman, 1967: 109 –110, pl. 35; Buzhinskaja 1992: 76 –77. Material examined. Falkland Islands, Eltanin Sta. 8-558, 14 Mar 1963, 51.48°S, 56.63°W, 646–845 m, holotype (USNM 55536).— South Pacific Ocean, off Tasmania, Eltanin Sta. 16-1418, 86– 101 m (1, USNM 60629). Description. A small species, holotype 3.3 mm long, 0.48 mm wide for 34 setigerous segments; Tasmanian specimen only 1.5 mm long and 0.25 mm wide for 21 setigers. Body not divided into regions; segments simple, with reduced parapodia throughout, tapering somewhat posteriorly. Prostomium sub-triangular not acutely pointed (Fig. 54 A); eyespots not apparent (red eyespots reported from holotype by Hartman (1967) no longer discernable). Peristomium with two achaetous rings. Branchiae absent (Fig. 54 A). Species Body shape Prostomium Peristomial Eyespots Segmental Noto/Neuro Capillary setae Noto/neuro Gametes Pygidium Distribution/depth range; rings annulations post setal acicular References lobes or spines lamellae aciculata Short, thick, Broađly 2 complete, Absent Uni- anđ Absent Crenulateđ 1%4 large, Absent With 2 Galapagos Rift, from seđiments Blake, 1985 only 3.2 mm rounđeđ on one or both biannulate conspicuous, short anal near hyđrothermal vents, 2730 long anterior narrow acicular spines cirri m. Blake 1985. margin in both noto- anđ neuropođia andeepia Elongate, Broađly 2 complete, Absent; Uniannulate Present, Crenulateđ Notopođia Eggs Bilobeđ, Antarctica: Drake Passage, Narayanaswamy with up to 68 rounđeđ relatively pigmenteđ notopođia with 1 spine; present in with 2 short Weđđell Sea, South Sanđwich Blake, 2005 setigers anđ anteriorly narrow nuchal only neuropođia largest cirri Slope, 2257% 5338 m. 120 mm long organs with 2 spines specimens Narayanaswamy & Blake 2005; present This stuđy. annulata Elongate, Triangular, 2 complete Present, Uniannulate Absent Crenulateđ anđ 1%2 smooth Absent With 2 Falklanđ Islanđs, 646% 845 m; Hartman, 1967) thick, with weakly original ...