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Fig. 9 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 9. Ophelina grandis (Pillai, 1961). SEM micrographs, specimen from Kuwait (MNCN 16.01/17006). A. Anterior end, latero-ventral view. B. Buccal tentacles (framed in A). C. Nuchal organ and CH1, lateral view. D. CH2. E. CH11–12. F. CH11, detail (framed in E). Abbreviations: br = branchia; brb = branchial basis; bt = buccal tentacles; CH/ch = chaetiger; neu = neurochaetae; not = notochaetae; nuo = nuchal organ; pcl = prechaetal lobe; pvl = parapodial ventral lobe.

Fig. 8 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 8. Ophelina grandis (Pillai, 1961). Stereomicrographs, specimen from Kuwait (MNCN 16.01/17005). A. Complete specimen, ventral view. B. Anterior end, lateral view. C. Posterior end, lateral view. Abbreviations: at = anal tube; br = branchia; mo = mouth; nuo = nuchal organ; pa = palpode; pbp = pair of basal papillae; pmp_p = paired marginal papillae - posterior; pmp_v = paired marginal papillae - ventral; uac = unpaired anal cirrus; vg = ventral groove.

Fig. 5 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 5. Ophelina arabica sp. nov., paratype (MNCN 16.01/17004), SEM micrographs. A. Posterior end, lateral view. B. Anal tube and unpaired anal cirrus (framed in A). C. Anal tube, antero-ventral region, detail (framed in B). D. Pair of basal papillae, detail (framed in C). Abbreviations: atdi = anal tube dorsal incision; lclc = last chaetigers long chaetae; pbp = pair of basal papillae; uac = unpaired anal cirrus.

Fig. 13 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 13. Type localities of species of Ophelina described in the Indo-Pacific and Australia and records of Ophelina in the Arabian Gulf.

Fig. 2 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 2. Ophelina arabica sp. nov. Stereomicrographs. A. Paratype (MNCN 16.01/17002). B–C. Holotype (MNCN 16.01/17001). A. Complete specimen. B. Posterior end, dorsal view. C. Posterior end, ventral view. Abbreviations: at = anal tube; atdi = anal tube dorsal incision; atvdf = anal tube ventro-distal fusion line; atvpf = anal tube ventro-proximal fusion line; lclc = last chaetigers long chaetae; pa = palpode; pbp = pair of basal papillae; uac = unpaired anal cirrus; vg = ventral groove.

Fig. 7 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 7. Ophelina grandis (Pillai, 1961). Line drawings, specimen from Kuwait (MNCN 16.01/17005). A. Anterior end, lateral view. B–D. Parapodia: 2 (B), 3 (C) and 5 (D), right side. E. Anal tube, lateral view. F. Anal tube, lateral view, detail of posterior and ventral margins and papillae. G. Anal tube, ventral view. Abbreviations: ata = anal tube annulations; br = branchia; neu = neurochaetae; not = notochaetae; nuo = nuchal organ; pa = palpode; pbp = pair of basal papillae; pcl = parapodial prechaetal lobe; pmp_p = paired marginal papillae - posterior; pmp_v = paired marginal papillae - ventral; pvl = parapodial ventral lobe; uac = unpaired anal cirrus; vg = ventral groove. B–D = same scale.

Fig. 4 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 4. Ophelina arabica sp. nov., paratype (MNCN 16.01/17003), SEM micrographs. A. CH14. B. CH21. C. CH28. D. Posterior end, ventral view. E. Last chaetigers, detail (framed in D). F. Pair of basal papillae and unpaired anal cirrus, detail (framed in E). Abbreviations: ata = anal tube annulations; atvdf = anal tube ventro-distal fusion line; atvpf = anal tube ventro-proximal fusion line; lclc = last chaetigers long chaetae; neu = neurochaetae; not = notochaetae; pbp = pair of basal papillae; pcl = parapodial prechaetal lobe; pdc = parapodial dorsal cirrus; pvl = parapodial ventral lobe; uac = unpaired anal cirrus; vg = ventral groove.

Fig. 6 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 6. Sampling localities in Inner Arabian Gulf were Ophelina arabica sp. nov. and O. grandis (Pillai, 1961) were collected.

Fig. 3 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 3. Ophelina arabica sp. nov., paratype (MNCN 16.01/17003), SEM micrographs. A. Anterior end, latero-ventral view (framed: palpode, detail). B. Nuchal organ, left side. C. CH1–4, lateral view. D. CH2. E. CH6. F. CH9. Abbreviations: br = branchia; CH/ch = chaetiger; lg = lateral groove; neu = neurochaetae; not = notochaetae; nuo = nuchal organ; pa = palpode; pcl = parapodial prechaetal lobe; pdc = parapodial dorsal cirrus; pvl = parapodial ventral lobe; vg = ventral groove.

Fig. 1 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 1. Ophelina arabica sp. nov., holotype (MNCN 16.01/17001), line drawings. A. Anterior end, lateral view. B–G. Parapodia: 1 (B), 2 (C), 3 (D), 6 (E), 17 (F) and 29 (G), left side. H–J. Anal tube: ventral (H), dorsal (I) and lateral (J) views. Abbreviations: ata = anal tube annulations; atdi = anal tube dorsal incision; atvdf = anal tube ventro-distal fusion line; atvpf = anal tube ventro-proximal fusion line; br = branchia; neu = neurochaetae; not = notochaetae; nuo = nuchal organ; pa = palpode; pbp = pair of basal papillae; pcl = parapodial prechaetal lobe; pdc = parapodial dorsal cirrus; pvl = parapodial ventral lobe; uac = unpaired anal cirrus; vg = ventral groove. B–G = same scale; D–G, I: chaetae not illustrated.

Fig. 11 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 11. Ophelina grandis (Pillai, 1961). Stereomicrographs. A–B. Holotype (NHM 1960.3.13.17). C–F. Paratype (NHM 1960.3.13.18). A. Complete specimen, left lateral view. B. Posterior end and anal tube, detail (framed in A). C. Posterior end and anal tube, dorso-lateral view. D. Posterior end and anal tube, dorsal view. E. Anterior body half, left latero-ventral view. F. Posterior body half, left lateroventral view. Abbreviations: at = anal tube; ata = anal tube annulations; br = branchia; mo = mouth; pa = palpode; pmp_p = paired marginal papillae - posterior; pmp_v = paired marginal papillae - ventral; uac = unpaired anal cirrus; vg = ventral groove.

Fig. 10 in The genus Ophelina Örsted, 1843 (Annelida: Opheliidae) in the coast of Kuwait (northern Indian Ocean), with the description of a new species

Fig. 10.Ophelina grandis (Pillai, 1961). SEM micrographs, specimen from Kuwait (MNCN 16.01/17006). A. CH41. B. CH41, notopodium, detail. C. CH58–60. D. CH60 (framed in C). Abbreviations: brb = branchial basis; CH/ch = chaetiger; neu = neurochaetae; not = notochaetae; pcl = prechaetal lobe; pvl = parapodial ventral lobe.

Fig. 6 in New species of Ophelina (Annelida: Opheliidae: Ophelininae) from northern Australia

Fig. 6 Ophelina cyprophilia sp. nov. holotype, anterior (a) and posterior (b), Ophelina fauveli NTM W13673, anterior (c) and posterior (d), Ophelina tessellata sp. nov. holotype, anterior (e) and posterior (f). no Nuchal organ, pp palpode, pac paired anal cirri, uac unpaired anal cirri, mac margin anal cirri

Fig. 5 Ophelina fauveli NTM W13673 in New species of Ophelina (Annelida: Opheliidae: Ophelininae) from northern Australia

Fig. 5 Ophelina fauveli NTM W13673, right side parapodia from posterior body, ventral view. The branchia is not shown

Fig. 4 a–c in New species of Ophelina (Annelida: Opheliidae: Ophelininae) from northern Australia

Fig. 4 a–c Light microscope photographs showing the parapodia of Ophelina species in this study. a Ophelina cyprophilia sp. nov. holotype, parapodium from posterior chaetiger (ventral lobe small, not visible); b O. fauveli NTM W13673, parapodium, chaetiger 7; c O. tessellata sp. nov. holotype, parapodium, chaetiger 10. br Branchiae, pcl prechaetal lobe, vl ventral lobe

Fig. 2 in New species of Ophelina (Annelida: Opheliidae: Ophelininae) from northern Australia

Fig. 2 Maximum likelihood tree of the cytochrome oxidase I (COI) dataset drawn using MEGA with the HKY+I model. Support from 1,000 bootstrap replicates is given at the nodes if greater than 50 %. Branch lengths are shown below the branches and were measured in the number of substitutions per site

Fig. 13 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 13 Ophelina bowitzi sp. nov. (IMNH 24324, BIOICE sample 2863). a Anterior end, lateral view. b Detail of nuchal organ. c Chaetiger 11. d Chaetiger 18. e Chaetiger 25; arrows mark positions of two ciliary bands. (f) Chaetiger 28; arrow marks position of lateral organ. Scale bars: (a) 1 mm; (b) 90 μm; (c, d, f) 100 μm; (e) 900 μm

Fig. 10 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 10 Posterior body region in three North Atlantic-Arctic species of Ophelina not found in BIOICE samples. a O. groenlandica Støp-Bowitz, 1948 (holotype, SMNH T-7831). b O. norvegica Støp-Bowitz, 1945 (SMNH 11137). c O. nybelini Eliason, 1951 (syntype, GNHM Polych. 10999). Scale bars: (a) 0.5 mm; (b, c) 1 mm

Fig. 11 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 11 Ophelina helgolandica Augener (IMNH 24329, BIO- ICE sample 2579). a Anterior end, lateral view. b Detail of nuchal organ. c First chaetiger. d Chaetigers 2–3. e Last branchiate chaetiger; arrow marks position of lateral organ. f Posterior body region, lateral view; arrow marks position of last branchiate chaetiger followed by three abranchiate chaetigers. Scale bars: (a, f) 1 mm; (b, c, e), 100 μm; (d) 200 μm

Fig. 9 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 9 Posterior body region in some Atlantic Ophelina species (redrawn from originals). a O. abranchiata (from Støp-Bowitz 1948). b O. bowitzi sp. nov. (from Fauvel 1914, as A. arctica). c O. delapidans longicephala (from HartmannSchröder 1977). d O. groenlandica (from Støp-Bowitz 1948). e O. helgolandica (from Augener 1912). f O. norvegica (from Støp-Bowitz 1945). g O. nybelini (from Eliason 1951)