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Figure 12 in The diversity of polychaetes (Annelida: Polychaeta) in a longterm pollution monitoring study from the Levantine coast of Turkey (Eastern Mediterranean), with the descriptions of four species new to science and two species new to the Mediterranean fauna

Figure 12. Paraonis lobulata sp. nov. holotype, paratype and non-type specimens: (a) antero-dorsal view of body, arrows pointing to lobated shapes of segments, paratype (ESFM-POL/2019-12); (b) antero-ventral view of body (ESFM-POL/2019-12); (c) ventral view of body, branchial region (ESFMPOL/2019-12); (d) dorsal view of prostomium (ESFM-POL/2018-124); (e) lateral margin of prostomium, dorsal side (ESFM-POL/2018-124); (f) modified neurochaetae on chaetiger 63 (ESFM-POL/2019-11); (g) bilobated posterior lip (ESFM-POL/2019-12); (h) notopodial papilla on chaetiger 12 (ESFM-POL/2017- 157); (i) lateral view of branchial region, unlabeled arrow pointing to lobe-shaped segment (ESFMPOL/2019-12); (j) posterior body region, unlabeled arrow pointing to lobe-shaped segment (ESFMPOL/2019-11); (k) dorsal view of chaetiger 12, with branchia and notopodial papilla (ESFM-POL/2017- 157). Scale bar: a = 121 µm; b = 96 µm; c = 155 µm; d = 71 µm; e = 71 µm; f = 44 µm; g = 74 µm; h = 16 µm; i = 30 µm; j = 255 µm; k = 130 µm. Abbreviations. bran: branchia; cb: ciliary band; co: cheek organ; no: nuchal organ; np: notopodial papilla; ntpcl: notopodial postchaetal lobe; per: peristomium; vl: ventral lobe.

Figure 10 in The diversity of polychaetes (Annelida: Polychaeta) in a longterm pollution monitoring study from the Levantine coast of Turkey (Eastern Mediterranean), with the descriptions of four species new to science and two species new to the Mediterranean fauna

Figure 10. Leitoscoloplos mediterranea sp. nov. paratype (ESFM–POL/2014–488): (a) abdominal parapodium, dorso-lateral view; (b) abdominal parapodium, lateral view; (c) thoracic chaetigers, lateral view; (d) middle abdominal chaetigers, lateral view. Scale bar: a = 200 µm; b = 75 µm; c = 101 µm; d = 217 µm. Abbreviations. br: branchia; brc: branchial ciliae; Crcap: crenulated capillaries; neP: neuropodium; nePsL: neuropodial postchaetal lobe; noPsL: notopodial postchaetal lobe; sp: subpodial papillae; sPod flange: subpodial flange; vC: ventral cirrus.

Figure 8 in The diversity of polychaetes (Annelida: Polychaeta) in a longterm pollution monitoring study from the Levantine coast of Turkey (Eastern Mediterranean), with the descriptions of four species new to science and two species new to the Mediterranean fauna

Figure 8. Leitoscoloplos mediterranea sp. nov. paratypes: (a) anterior abdominal segment, cross section, anterior view (ESFM–POL/2015–304); (b) posterior abdominal parapodium, anterior view (ESFM–POL/2017–204); (c) thoracic parapodium, anterior view (ESFM–POL/2017–204); (d) crenulated capillary chaetae (a: in thoracic region; b: in anterior abdominal region; c: in posterior abdominal region). Scale bar: a = 0.5 mm; b = 0.36 mm; c = 0.45 mm; d(a) = 18 µm; d(b) = 14 µm; d(c) = 20 µm. Abbreviations. br: branchia; brc: branchial ciliae; br w/Lat lobe: branchia with a lateral lobe; Crcap: crenulated capillaries; neP: neuropodium; nePsL: neuropodial postchaetal lobe; neS: neuropodial chaeta; noPsL: notopodial postchaetal lobe; noS: notopodial chaeta; sPod flange: subpodial flange.

Figure 19 in The diversity of polychaetes (Annelida: Polychaeta) in a longterm pollution monitoring study from the Levantine coast of Turkey (Eastern Mediterranean), with the descriptions of four species new to science and two species new to the Mediterranean fauna

Figure 19. Chaetozone elakata ESFM-POL/2018-073 and ESFM-POL/2013-1430: (a) anterior end, dorsolateral view; (b) anterior end, dorsal view; (c) anterior end, dorsal view, stained with methyl green; (d) posterior parapodium, cross section. Scale bar: a = 0.96 mm; b = 0.72 mm; c = 0.98 mm; d = 0.14 mm.

Figure 7 in The diversity of polychaetes (Annelida: Polychaeta) in a longterm pollution monitoring study from the Levantine coast of Turkey (Eastern Mediterranean), with the descriptions of four species new to science and two species new to the Mediterranean fauna

Figure 7. Leitoscoloplos mediterranea sp. nov. paratype (ESFM-POL/2014-285): (a) anterior end, dorsal view; (b) anterior end, lateral view; (c) anterior end, lateral view with proboscis everted; (d) posterior end, dorso-lateral view. Scale bar: a = 0.5 mm; b = 0.63 mm; c = 0.42 mm; d = 0.27 mm. Abbreviations. aC: anal cirrus; an: anus; Crcap: crenulated capillaries; mo: mouth; neP: neuropodium; nePsl: neuropodial postchaetal lobe; noPsl: notopodial postchaetal lobe; nuO: nuchal organ; per: peristomium; pr: prostomium; prob: proboscis; sp: subpodial papillae; sPod flange: subpodial flange.

FIGURE 3 in Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

FIGURE 3. Levensteiniella manusensis sp. nov., detailed structures of the holotype (A–D, G–J) and paratypes (E, MBM285998; F, MBM285999; K, L, MBM285997). A, B, Head and anterior segments, in dorsal and ventral views, right palp detached; C, D, Lateral sides of segments 11–14 in ventral views, arrows point to the dichotomous branches in the first pair of ventral papillae; E, Extended pharynx in dorsal view; F, Posterior segments in ventral view; G, Left 1st elytron from segment 2; H, Left 2nd elytron from segment 4; I, Left 3rd elytron from segment 5; J, Elytron from posterior segment; K, Elytron from anterior segment; L, Elytron from posterior segment. Abbreviation: S1 referring to segment 1, and so on. Scale bars: 1 mm (A– D, K, L), 0.5 mm (E, F) and 2 mm (G–J).

FIGURE 4 in Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

FIGURE 4. Levensteiniella manusensis sp. nov., parapodia and chaetae of the holotype (A–D, G) and paratype (E, F, H–J, right 9 parapodium, MBM285999). A–D, Four parapodia in anterior (upper positions) and posterior (lower positions) views (A, Right 1st parapodium; B, Right 9th parapodium; C, Right 18th parapodium; D, Left last parapodium); E, Upper notochaetae; F, Lower notochaetae; G, Notochaetae; H, Subacicular neurochaetae; I, Same, showing details of proximal spinous region; J, Supra-acicular neurochaetae, showing details of distal (upper position) and proximal (lower position) spinous regions. Abbreviation: S2 referring to segment 2, and so on. Scale bars: 0.5 mm (A, D), 1 mm (B, C), 100 µm (E–H) and 10 µm (I, J).

FIGURE 1 in Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

FIGURE 1. Distribution of six species of Levensteiniella described to date based on present study and those of Pettibone (1985, 1988, 1989a, b, 1990) and Hourdez & Desbruyères (2000, 2003).

FIGURE 2 in Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

FIGURE 2. Levensteiniella manusensis sp. nov. in dorsal (A, C, E, G, I) and ventral (B, D, F, H, J) views. A, B, Holotype in vivo (MBM285996); C, D, Holotype preserved in alcohol; E, F, Paratype (MBM285999); G, H, The other paratype (MBM285999); I, J, Paratype (MBM286000). Scale bars: 5 mm (A, B) and (E–J).

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Supplementary material 1 from: Ribeiro RP, Alves PR, Almeida ZS, Ruta C (2018) A new species of Paraonis and an annotated checklist of polychaetes from mangroves of the Brazilian Amazon Coast (Annelida, Paraonidae). ZooKeys 740: 1-34. https://doi.org/10.3897/zookeys.740.14640

Brazilian records of the species identified from Amazon coast, Maranhão : Explanation note: Information on deposit number, record, state, coordinates, habitat, substrate and depth and references of the records are provided.

FIGURE 26 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 26. Euchonicoloides halli gen. et sp. nov. Holotype. A, female holotype, ventral showing paired bifurcate limbs (?antennae); B, female holotype, lateral showing embedded endosoma. Scale bars: A–B, 100 µm.

FIGURE 7 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 7. Scanning electron micrographs of Herpyllobius polynoes (Krøyer, 1864). A, ectosoma of female attached to host, dorsal; B, same, posterior view showing genital apertures. Scanning electron micrographs of Eurysilenium truncatum M. Sars, 1870. C, ectosoma of female attached adjacent to elytrophore of host, dorsal; D, same, showing incomplete male attached posteriorly (arrowed). Scale bars: A–C, 0.5 mm, D, 200 µm.

FIGURE 10 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 10. Pholoicola chambersae gen. et sp. nov. A, adult female with 3 males attached, ventral; B, female, dorsal; C, detached egg sac; D, adult male, lateral view showing position of developing paired spermatophores; E, adult male, ventral; F, cephalothorax of male, lateral view showing thickened frontal region and clawed limb; G, spermatophore; H, last male copepodid stage, antennule; I, antenna; J, maxilliped. Scale bars: A, 0.5 mm, B–C, 250 µm, D–E, 50 µm, F–H, 25 µm, I–J 10 µm.

FIGURE 22 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 22. Euchonicola caudatus gen. et sp. nov. female. A, detached female, lateral view; B, same, ventral view; C, attached female (to setiger 8 of host), lateral view showing extent of endosoma drawn through cleared body wall of host; D, posterior extremity, showing divergent, bilobate caudal rami and anus; E, stalk; F, lobate antennule; G, antenna. Scale bars: A– C, 100 µm, D–G, 25 µm.

FIGURE 15 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 15. Melinnacheres steenstrupi Bresciani & Lützen, 1961. A, ovigerous female, dorsal; B, same, ventral; C, same, lateral; D, detached egg sac. Melinnacheres terebellidis Levinsen, 1878. E, ovigerous female, dorsal; F, same ventral; G, detached egg sac. All scale bars 1 mm.

FIGURE 14. Melinnacheres ergasiloides M. Sars, 1870. A in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 14. Melinnacheres ergasiloides M. Sars, 1870. A, ovigerous female detached from host, ventral view showing 3 attached spermatophores (arrowed); B, another female with 2 males attached, ventral view showing longitudinal trunk musculature of female; C, posterior margin of trunk showing paired genital apertures and anal slit on median prominence; D, egg sac; E, adult male, dorsal view; F, same, ventral view showing paired appendages and surface ornamentation. Scale bars: A–B, D, 0.5 mm, C, 250 µm, E–F, 100 µm.

FIGURE 3 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 3. Herpyllobius arcticus Steenstrup & Lütken, 1861 from Harmothoe antilopes. A, habitus of ovigerous female with male attached (arrowed), lateral view showing position of cement glands (dotted); B, ectosoma of female, posterior view showing attachment site of male (arrowed) dorsal to genital apertures; C, adult male containing paired spermatophores. Scale bars: A, 0.5 mm, B, 250 µm, C, 100 µm.

FIGURE 18 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 18. Lanassicola arcticus gen. et sp. nov. male. A, habitus, ventral view showing paired maxillae immediately posterior to oral funnel; B, oral funnel, dorsal view showing paired antennules and antennae located just anterior to base of oral funnel, and spermatophore (arrowed) in process of being extruded through oral funnel. Scale bars: A, 50 µm, B, 25 µm.

FIGURE 2 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 2. Last male copepodid of Herpyllobius arcticus Steenstrup & Lütken, 1861 from female on Harmothoe fragilis. A, exuvium of last copepodid stage containing adult male (stippled), showing outline of spermatophores, dorsal; B, rostrum, ventral; C, antennule; D, maxilliped, E, leg 1 and intercoxal sclerite; F, leg 3 and intercoxal sclerite. Scale bars: A, 100 µm, B, D, 10 µm, C, E–F, 25 µm.

FIGURE 9 in Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas

FIGURE 9. Eurysilenium sp. from Harmothoe fragilis. A, ectosoma of female, ventral showing male attached between ventrally-located genital apertures of female; B, adult male, dorsal. Scale bars: A, 0.5 mm, B, 100 µm.