2,909 research outputs found
FIGURE 5 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand
No full textFIGURE 5. Magelona heteropoda (Holotype, BMNH:ZB.1971.54) A, anterior region, dorsal view, interparapodial abdominal glandular areas marked; B–G, chaetigers 1, 4, 5, 6, 8 and 9 respectively (anterior views); H, right notopodia from chaetiger 9.Published as part of Mortimer, Kate, 2010, Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand, pp. 1-26 in Zootaxa 2628 on page 10, DOI: 10.5281/zenodo.19826
Magelona
No full textKey to adult specimens of Magelona from the western Indian Ocean The western Indian Ocean is regarded here as including the seas around the Arabian Peninsula, the seas surrounding east Africa to its southern tip (including Seychelles), and those surrounding Pakistan and western India. The species included here are those known to occur in this region and are included in the following key (unconfirmed records have been omitted), confirmed localities are given for each species: 1. Prostomium with conspicuous, well–delineated frontal horns..................................................................................... 2 - Prostomium without horns, or rudimentary horns present........................................................................................... 5 2. Anterior margin crenulate............................................................................................................................................ 3 - Anterior margin smooth................................................................................................................................................ 4 3. Abdominal hooded hooks bidentate, unstained V shape present on venter of mid–thorax, when stained with methyl green ............................................................................................................................ M. crenulifrons (Gulf of Oman) - Abdominal hooded hooks tridentate ................................................................................... M. cornuta (Gulf of Oman) 4 Abdominal hooded hooks bidentate, unstained X shape present on venter of mid–thorax when stained with methyl green ................................................................................................................................... M. pulchella (Arabian Gulf) - Abdominal hooded hooks tridentate, distinctive swollen bud-like tips on the notopodial lamellae of chaetiger 9....... ................................................................................................... M. gemmata Mortimer & Mackie, 2003 (Seychelles) 5. Thoracic notopodia with dorsal processes................................................................................................................... 6 - Dorsal processes lacking............................................................................................................................................. 8 6. Anterior abdomen with lateral pouches, chaetiger 9 with modified chaetae................................................................ 7 - No anterior abdominal pouches, chaetiger 9 with capillary chaetae; prostomium onion–shaped with rudimentary horns ............................................................................................. M. cepiceps Mortimer & Mackie, 2006 (Seychelles) 7. Abdominal hooded hooks bidentate; notopodial dorsal processes absent in anterior thorax......................................... ..................................................................................................... M. conversa Mortimer& Mackie, 2003 (Seychelles) - Abdominal hooded hooks tridentate; notopodial dorsal processes on all thoracic chaetigers........................................ .................................................................................................. M. obockensis (Gulf of Aden, Red Sea, Arabian Gulf) 8. Anterior abdominal chaetigers with greatly enlarged re–curved hooded hooks........................................................... ..................................................................................................... M. falcifera Mortimer & Mackie, 2003 (Seychelles) - No enlarged hooks...................................................................................................................................................... 9 9. Neuropodial lamellae of chaetigers 1–4 expanded distally, scoop–shaped; pigment band present in anterior abdomen ................................................................................................................................................. M. cincta (South Africa) - Thoracic neuropodial lamellae not distally expanded.............................................................................................. 10 10. Thoracic notopodial postchaetal lamellae larger than neuropodial ones; neuropodial lobes reduced in size in mid– thorax .......................................................................................... M. mahensis Mortimer & Mackie, 2006 (Seychelles) - Thoracic postchaetal lamellae in both rami similar in size and shape........................................................................ 11 11. Postchaetal lamellae in thorax and abdomen long, sharply triangular; large, stout species........................................... ................................................................................................ M. symmetrica Mortimer & Mackie, 2006 (Seychelles) - Thoracic postchaetal lamellae short, triangular; abdominal lamellae lanceolate, basally constricted; small, slender species .................................................................................................................................... M. pygmaea (Seychelles)Published as part of Mortimer, Kate, 2010, Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand, pp. 1-26 in Zootaxa 2628 on pages 23-24, DOI: 10.5281/zenodo.19826
FIGURE 8 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
No full textFIGURE 8. Magelona minuta (NMW.Z.2005.014.0117) posterior region (ventral view).Published as part of Mills, Kimberley & Mortimer, Kate, 2018, Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta, pp. 541-559 in Zootaxa 4527 (4) on page 553, DOI: 10.11646/zootaxa.4527.4.5, http://zenodo.org/record/261248
FIGURE 9 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
No full textFIGURE 9. Known distribution records for Magelona japonica.Published as part of Taylor, Abbie, Mortimer, Kate & Jimi, Naoto, 2022, Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica, pp. 451-491 in Zootaxa 5196 (4) on page 466, DOI: 10.11646/zootaxa.5196.4.1, http://zenodo.org/record/723561
Guidelines for Data Annotation
No full textIncluded here are a coding manual and supplementary examples of gesture forms (in still images and video recordings) that informed the coding of the first author (Kate Mesh) and four project reliability coders
Magelona falcifera Mortimer & Mackie 2003
No full textMagelona cf. falcifera Mortimer & Mackie, 2003 Figures 9 –10, 13 K Magelona falcifera Mortimer & Mackie, 2003: 167 –169, fig. 3? Material examined. Persian Gulf, IRAN—Stn. 8 (NMW.Z.2010.037.0008; 11 af, and 1 dissected af), 1998; Stn. 13 (NMW.Z.2010.037.0009; 1 c, 11 af), 1998; Stn. 14 (NMW.Z.2010.037.0010; 20 af), 1998; Stn. 24 (MNCN. 16.01 / 13232; 2 af), 1998; Stn. 8 (1) (NMW.Z.2010.037.0011; 37 af), 2002; Stn. 13 (1) (MB 29 –000189; 23 af), 2002; Stn. B 4–10 (MNCN. 16.01 / 13233, grab A, 15 af; MNCN. 16.01 / 13234, grab B, 22 af; MB 29 –000190; grab C, 6 af), 2005; Stn. B 4–15 C (NMW.Z.2010.037.0012; 1 af), 2005; Stn. F 10 (NMW.Z.2010.037.0013, grab 1, 2 c, 44 af; NMW.Z.2010.037.0014, grab 2, 4 af), 2006; Stn. F 20 (3) (NMW.Z.2010.037.0015, 16 af), 2006. QATAR—Stn. E 72 A (MNCN. 16.01 / 13235; 1 af), 2005; Stn. G 93 (MNCN. 16.01 / 13236, grab A, 3 af; MB 29 – 0 0 0 191, grab B, 1 af; MB 29 –000192, grab C, 1 af), 2005. Diagnosis. Prostomium width similar to length, subtriangular without prostomial horns. Chaetigers 1–8 with lanceolate postchaetal lamellae, notopodial prechaetal lamellae indistinct and without dorsal superior processes. Chaetiger 9 with broad triangular postchaetal lamellae. All thoracic chaetae capillary. Abdominal chaetigers with lanceolate lateral lamellae and one enlarged hooded hook in anterior abdominal parapodia; other hooded hooks bidentate, those nearest the lateral lamellae more slender. Hooks in 2 groups, vis-à-vis. Lateral pouches absent. Methyl green staining particularly strong between chaetigers 5–9. Description. A small slender species; difference between abdomen and thorax not marked (Figure 9 A). Dimensions of figured complete specimen (NMW.Z.2010.037.0009): prostomium 0.4 mm long, 0.4 mm wide; thorax (including prostomium) 1.8 mm long, 0.45 mm wide (measured at widest point around chaetiger 7); abdomen 0.4 mm wide; total length 17.0 mm for 67 chaetigers. Other complete specimens (2) 5.5–6.7 mm for 45–52 chaetigers; remaining material 12–53 chaetigers, 1.3–13.5 mm. Prostomium as long as, or less than width, subtriangular; anterior margin smooth and rounded, occasionally straight (Figure 9 B) (Note: prostomium folded and curled in anterior drawing, Figure 9 A). Two pairs of longitudinal dorsal muscular(?) ridges; outer pair shorter and more indistinct, abutting inners for entire length; inner pair separated for majority of length, tips reaching distal prostomial margin. Indistinct (muscular?) areas either side of ridges, visible only under compound microscope. Proboscis everted in many specimens, oval to circular when partially everted, heart - shaped when fully everted. Proboscis ridged inferiorly, superior surface appearing smooth. Palps present on several specimens, arising ventrolaterally from base of prostomium, reaching at least chaetiger 16–20, non-papillated region reaching chaetiger 3–5. Papillae: long, of similar lengths, digitiform; with 1 row of papillae, either side of inconspicuous ventral groove for length of palp. Achaetous region behind prostomium roughly one and a half times the size of chaetiger 1; dorsal antero-lateral margins of which are rounded and expand over the base of the prostomium. Chaetigers 1–8 similar; parapodia biramous (Figures 9 C–G); notopodia with low indistinct prechaetal lamellae. Superior notopodial prechaetal processes (DML) and ventral neuropodial lobes (VNL) absent. Postchaetal lamellae lanceolate, of about equal size in both rami, gradually becoming longer and broader along thorax. Chaetiger 9: segment slightly narrower and thinner than previous segments. Prechaetal lamellae low; postchaetal lamellae broad triangular, with narrow tips (Figure 9 H). Chaetae of all thoracic chaetigers simple capillaries. Abdominal chaetigers with basally constricted lanceolate lateral lamellae of about equal size in both rami (Figures 9 I –K), becoming more slender posteriorly. Lamellae do not appear to extend postchaetally. Small triangular processes (DML and VML) present at inner margins of chaetal rows. A large sickle-shaped hook in both rami of anterior abdominal chaetigers present, no secondary teeth observed (Figure 9 L); decreasing in size around chaetiger 20 and not apparent after chaetiger 25. A single small slender bidentate hook (Figure 9 O) is present at the base of the lateral lamellae (and next to the enlarged hooded hooks in the anterior abdomen); appearing to emerge where the lamellae is basally constricted. Remaining hooks (Figures 9 M–N) bidentate of similar size, hooks in two groups, main fangs vis-à-vis. Approximately four hooks present in anterior abdomen (one slender, one enlarged and two ‘ordinary’ hooks, as seen in figured specimen) increasing medially to approximately 6–8 hooks and posteriorly 4–6. Sporadic tridentate hooks observed in the posterior abdomen. Eggs observed posteriorly (NMW.Z.2010.037.0008b; dissected af, visible from approximately the 30 th chaetiger) packed within the body cavity, approximately 75 μm in diameter. Pygidium small with two slender lateral anal cirri (Figure 9 P). No pouches observed. Colour. No living animals observed, preserved colour uniformly cream/white in alcohol. Glandular areas noticeable interparapodially within the abdomen, staining lightly with Rose Bengal in some specimens. Staining with methyl green (Figure 10) shows a diffuse overall stain, particularly strong between chaetigers 5–9. Dorsally, pale green speckled areas are present between chaetigers 1 to 4 − 5 (also seen as white speckles in unstained material). Darker transverse bands also present, level with parapodia on chaetigers 6–8; two longitudinal lines on chaetigers 7–8 either side of mid - dorsal line, and much darker pigmentation on lateral margins of chaetigers 6–9 (also seen on venter). Staining particularly strong around the parapodia of chaetiger 9; additional stain seen as speckles abdominally. Ventrally, speckled patches (lighter in colour) present medially between chaetigers 3–5 and denser staining medially between chaetigers 5–8. Abdominally, speckled areas interparapodially and ventrally either side of the mid-ventral line. Habitat. Found at 10 stations from 4 surveys off the coast of Iran, in medium sand, shelly muddy sand, and fine shelly sand, 10–19 m, and 2 stations from one survey off Qatar, in medium sand, 15–18.4 m. Evidence of a sediment tube, present on many specimens. Distribution. Iran, Qatar (present study), Seychelles (Mortimer & Mackie 2003). Remarks. The Persian material in general conforms well with the type material, however, several perceived differences exist. The original description depicts the prostomial shape as subhexagonal, however, having reviewed all material, prostomial shape varies from subtriangular to subhexagonal depending on the degree to which the lateral edges are inverted. Figure 11 A shows the prostomial shape of a dissected paratype, which agrees well with those seen in the Persian material. The figured Persian specimens appear slightly broader than the type material, however, both sets of material are generally of a similar size and breadth. Lastly, there seems to be a variation in the methyl green staining patterns (Figures 10–11). The types of M. falcifera show a diffuse overall stain, with dorsal transverse white bands on chaetigers 6 and 7 and additional white patches on chaetigers 4, 5 and 8. Ventrally, white transverse bands are present between chaetigers 3–6, with additional white patches level with chaetigers 7 and 8, those of the later chaetiger being somewhat triangular. Additional, strong green speckles are often present as a transverse line around chaetigers 4–6 (one transverse line shown on Figure 11, around chaetiger 5). No abdominal staining observed. The stain dissipated very quickly in the Seychellois material, in contrast to the Persian material that persisted for some time, still evident days after initial staining. The morphological similarity between the Persian material and the type specimens is strong, with the only major difference appearing to be the variation in staining patterns. However, none of the perceived differences is deemed significant enough to warrant separation of this material at this time.Published as part of Mortimer, Kate, Cassà, Susanna, Martin, Daniel & Gil, João, 2012, New records and new species of Magelonidae (Polychaeta) from the Arabian Peninsula, with a re-description of Magelona pacifica and a discussion on the magelonid buccal region, pp. 1-43 in Zootaxa 3331 on pages 24-27, DOI: 10.5281/zenodo.20865
Magelona cornuta Wesenberg-Lund 1949
No full text<i>Magelona cornuta</i> Wesenberg-Lund, 1949 emended <p> <i>Magellone cornuta</i> Wesenberg-Lund 1949: 328 –330, fig. 36, 366, map III, 378, table I.</p> <p> <b>Remarks.</b> The holotype of <i>M. cornuta</i> (originally described from Iranian waters, Gulf of Oman) was redescribed by Mortimer & Mackie (2009) and will not be further discussed herein. <i>Magelona cornuta</i> was recorded from the Red Sea by Amoureux (1983). A specimen of <i>M. cornuta</i> (MNHN A895) labelled Eilat (5th May 1979) Golfe d’Aqaba borrowed from the Muséum National d'Histoire Naturelle, Paris, is believed to be that described by Amoureux. Detailed examination of this specimen shows that it is not <i>M. cornuta</i> but differs in the shape of the prostomium, having a more rounded shape with very distinct almost separate frontal horns, and foliaceous lateral lamellae with crenulated upper margins. This specimen appears to represent a new species and will be described in a forthcoming paper.</p> <p> <i>Magelona cornuta</i> has also been recorded from the Gulf of Aden (Harman 1974, 1976) from four stations: Sta. 210 (21°07' to 09'N, 69°48'E, 34-37 m, mud), Sta. 230 (23°3'N; 66°55'E, 88 m), Sta. 247 (25°06'N; 60° 45'E, 110 m) and Sta. 248 (listed as having the same data as Sta. 247, however also recorded as being at a depth of 247 m). However, <i>M. cornuta</i> did not occur in material examined from the Gulf of Oman examined by Mortimer & Mackie (2009), although the morphologically similar species <i>M. crenulifrons</i> was found to be present. Given the small number of records of <i>M. cornuta</i> within this area, Hartman’s specimens should be reexamined. However, until then I currently consider <i>M. cornuta</i> to have an Indo-West Pacific distribution.</p>Published as part of <i>Mortimer, Kate, 2010, Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand, pp. 1-26 in Zootaxa 2628</i> on page 18, DOI: <a href="http://zenodo.org/record/198268">10.5281/zenodo.198268</a>
Figure 5 in Integrative taxonomy of West African Magelona (Annelida: Magelonidae): species with thoracic pigmentation
No full textFigure 5. Magelona alleni (A, B, holotype BMNH 1958.5.2.1; C, paratype BMNH 1958.5.2.2): A, anterior region (dorsal view); B, prostomium and first chaetiger (ventral view, showing mouth and base of LH palp); C, posterior region (dorsal view).Published as part of Mortimer, Kate, Kongsrud, Jon Anders & Willassen, Endre, 2022, Integrative taxonomy of West African Magelona (Annelida: Magelonidae): species with thoracic pigmentation, pp. 1134-1176 in Zoological Journal of the Linnean Society 194 (4) on page 1146, DOI: 10.1093/zoolinnean/zlab070, http://zenodo.org/record/645940
Magelona boninensis Taylor & Mortimer & Jimi 2022, sp. nov.
No full textMagelona boninensis sp. nov. [Japanese name: Bonin-morote-gokai] Figs 14–18 Type locality: Bonin Islands, Japan ZooBank LSID: urn:lsid:zoobank.org:act: 3CED40AC-71DB-4DF0-AFA8-FB56B1862FF2 Material examined. JAPAN, Chichijima Island, Bonin Islands – Ougiura Beach (Holotype, NMW.Z.2022.001.0002, af; imaged paratypes, NMW.Z.2022.001.0003, af, pf; paratypes, NMW.Z.2022.001.0004, 8af, 4f, 4 loose palps; NSMT-Pol P-890, 7af (etoh); imaged paratypes, NMW.Z.2022.001.0005, 3af (formalin fixed); paratypes, NMW. Z.2022.001.0006, 2af, 4f, 2 loose palps (formalin fixed; last chaetiger of 67 chaetiger specimen dissected and slide mounted); NSMT-Pol P-891, 2af (formalin fixed); dissected paratype, NMW.Z.2022.001.0007, af; SEM stub mounted paratypes (dried and sputter-coated), NMW.Z.2022.001.0008–9, 2af), (27.0738, 142.2019), sandy sediment, collected by NJ, by snorkelling, 1–2 m depth, 27/03/2015. Omura Beach (Paratypes, NMW.Z.2022.001.0010, af; NSMT-Pol P-892, af), (27.0933, 142.1938), sandy sediment, collected by NJ by snorkelling, 1–2 m depth, 26/03/2015. Diagnosis. Prostomium longer than wide with distinct prostomial horns. Notopodia of chaetigers 1–8 with slender foliaceous postchaetal lamellae with crenulate margins, expanded as cirriform superior dorsal lobes. Neuropodia with slender triangular ventral lamellae; chaetiger 8 with additional triangular postchaetal lamellae. Notopodia of chaetiger 9 with rounded postchaetal lamellae confluent with prechaetal ridges and expanded as lateral cirriform lobes. Neuropodia of chaetiger 9 similar to preceding chaetiger. All thoracic chaetae bilimbate capillary. Abdominal lateral lamellae basally constricted with postchaetal expansions. Hooded hooks tridentate, in two groups. Posteriorly open pouches present. Dimensions. A moderately large species (Figs 14A; 15E; 16D); junction between thorax and abdomen distinct, abdomen thicker and wider than thorax. Thorax appearing dorsoventrally flattened in comparison to more rounded abdomen (Figs 15F; 16B). All specimens posteriorly incomplete, one posterior fragment present in vial (Fig. 16F). Thoracic chaetiger length approximately one and a half times width from chaetiger 3 onwards (Figs 14A; 15B; 16B, C). Holotype dimensions: prostomium 1.25 mm long, 1 mm wide; thorax 7.0 mm long (including prostomium), 0.6 mm wide; abdomen 1.0 mm wide; total length approximately 37.0 mm for 65 chaetigers. Posterior fragment 68 chaetigers long. Other paratypes with 17–103 chaetigers for 7.5–44.4 mm. Description. Prostomium longer than wide (L:W ratio 1.07–1.43); spatulate, anterior margin triangular, appearing smooth, but minute crenulations apparent across entire margin only under high magnification (Figs 14B; 18J). Conspicuous prostomial horns present, separated from distal prostomial margin by a large degree (Figs 14A, B; 15A, B; 16A; 17D; 18J). Lateral margins often appearing undulating due to length of prostomium. Two pairs of prominent longitudinal dorsal muscular ridges present, outer pair ridged transversely and abutting inners for entire length: inner pair diverging distally into each horn. Distinct patterned areas either side of ridges, oblong of varying sizes, additional small circular markings present towards outer edges of the prostomium (Figs 14B; 18J). Burrowing organ almost entirely everted on holotype, heart-shaped, longitudinally ridged inferiorly, upper surface smoother but with some longitudinal ridging (Fig. 16B). Burrowing organ additionally everted on 24 specimens: heart-shaped when fully everted (ten specimens) (Fig. 17B), round to oval when partially everted (14 specimens) (Figs 15D; 16D). Right-hand palp retained on holotype, extending to approximately chaetiger 43, non-papillated region reaching mid chaetiger 3. Papillae long, lengthening towards distal palp tips, slender, digitiform (Figs 15A, B, D, E; 16A, D). Papillae in three rows either side of an indistinct longitudinal line proximally and medially, reducing to one row either side at distal tips (Fig. 17A, C, D). Palps additionally present (at least partially) on 22 paratypes, long and slender; arising ventrolaterally from base of prostomium, reaching chaetigers 24–50. Achaetous region behind prostomium approximately one and a half times the size of chaetiger 1 (Figs 14A; 15A). Chaetigers 1–7 similar; parapodia biramous (Figs 14C–I; 15F; 16B; 18A–G); notopodia with low triangular prechaetal lamellae confluent with large spatulate to slender foliaceous postchaetal lamellae, upper margins lightly crenulated. Notopodial lamellae marginally longer than neuropodial ones. Long slender, cirriform, prechaetal superior dorsal lobes present. Neuropodial pre- and postchaetal lamellae as low ridges, forming distinct cuff-like structures confluent with ventral triangular lamellae beneath chaetal bundle, of similar size along thorax. Slight postchaetal expansion from approximately chaetiger 5. Chaetiger 8 parapodia similar to preceding chaetigers (Figs 14J; 15F; 16B; 18H), however, neuropodia with additional triangular postchaetal lamellae of similar size to the ventral lamellae. Notopodial prechaetal lamellae of chaetiger 9 as low ridges confluent with rounded postchaetal lamellae (smaller than those of preceding chaetigers) and inferiorly expanded as small cirriform processes; superior dorsal lobes absent (Figs 14K; 15F; 16B; 18I). Neuropodia with triangular postchaetal lamellae confluent with low prechaetal ridges and smaller digitiform prechaetal lamellae. Thoracic chaetae smooth, bilimbate capillaries (Fig. 14M), marginally longer in notopodia than neuropodia (Fig. 14C–I). Distinctly splayed in posterior thorax (Fig. 14J, K). Chaetae of mid rami of chaetiger 9 with slightly irregular blades, tips of which are bent at roughly 45 degrees to shaft, not as marked as the irregular blades noted by Brasil (2003) (Figs 14N; 18K). Paired, reniform ventral swellings present from chaetigers 6–9 (Fig. 15F). Abdominal chaetigers shorter in anterior abdomen but lengthening towards posterior (Fig. 16A). Abdominal parapodia with large rounded triangular to spatulate lateral lamellae (edges of lamellae minutely wavy in anterior abdomen) of about equal size in both rami; basally constricted (Figs 14L; 15F; 16E; 17E, F). Abdominal lamellae reduce to slender digitiform on extreme posterior chaetigers (Fig. 16F). Postchaetal expansion of lateral lamellae behind chaetal rows distinct, triangular (Figs 14L; 17E). Expansion reducing in size towards posterior but still evident until ten chaetigers before pygidium. Triangular processes (DML, VML) present at inner margins of chaetal rows, long, present until approximately ten chaetigers before pygidium. Abdominal chaetae tridentate hooded hooks (Figs 14O, P; 17G; 18L, M), approximately ten per ramus in anterior abdomen, in two groups vis-à-vis (Figs 17H; 18L), all of a similar size. Group at outer margin of ramus with approximately twice the number of hooks. Hooks reducing to six or seven per ramus towards posterior. Lamellae of each ramus internally supported by a single curved abdominal support (‘acicula’) chaeta (Figs 14Q; 18N, O), terminating in a tridentate(?) hooded hook. Exact dentition of each chaeta difficult to assess due to size but apical teeth present. Paired posteriorly open pouches (Figs 16A; 17F) present on consecutive segments, starting from around chaetigers 32–50 (observed on 20 specimens, remaining specimens too short to observe pouches). Pouches present for holotype on chaetigers 40–65 on right-hand side of body, and chaetigers 42–65 on left. Pouches appear as simple folds, medially split, present until approximately eight chaetigers from the pygidium (observed from posterior fragment, Fig. 16F). Eggs present in ten specimens, approximately 70 μm in diameter (clearly visible from chaetigers 27–43). Posterior fragment with two long, digitiform pygidial cirri either side of a rounded-triangular pygidium; small, rounded ventrally placed anus (Fig. 16F). Colour. No live specimens observed. Colour of preserved specimens uniformly cream in alcohol with light interparapodial abdominal patches (Figs 15C, E; 16D). Methyl Green staining retained for longer period of time on abdomen (almost as transverse bands, with light speckles as interparapodial patches), faint speckled staining apparent at high magnification on thorax (more apparent in posterior thorax, and on ventral surface) (Fig. 15B, D, F). Speckled pigmentation along length of palp papillae, and around their bases. Habitat. Type specimens found at low tide at Ougiura and Omura beaches, Chichijima Island, Bonin Islands, Japan (Fig. 1). Distribution. Magelona boninensis sp. nov. is currently only known from Japan. Etymology. The specific name refers to the type locality of the Bonin Islands, Japan Remarks. Nineteen species share morphological similarities with Magelona boninensis sp. nov. in possessing distinct prostomial horns, and in the nature of the thoracic lamellae: Magelona alexandrae Magalhães, BaileyBrock & Watling, 2018; M. anuheone; Magelona cerae Hartman & Reish, 1950; Magelona cinthyae Magalhães, Bailey-Brock & Watling, 2018; M. cornuta; M. crenulifrons; Magelona gemmata Mortimer & Mackie, 2003; Magelona lusitanica Mortimer, Gil & Fiege, 2011; Magelona marianae Hernández-Alcántara & Solís-Weiss, 2000; Magelona montera Mortimer, Cassà, Martin & Gil, 2012; M. pacifica, Magelona pulchella Mohammad, 1970; Magelona sinbadi Mortimer, Cassà, Martin & Gil, 2012; Magelona spinifera Hernández-Alcántara & Solís-Weiss, 2000; Magelona tehuanensis Hernández-Alcántara & Solís-Weiss, 2000; and Magelona spp. D, G, K, and L of Uebelacker & Jones (1984). The following species differ from the new species in possessing bidentate and not tridentate hooded hooks of the abdomen: M. pacifica, M. marianae, M. crenulifrons, Magelona spp. D and G, M. cerae, M. pulchella, and M. spinifera. The latter species and Magelona sp. D also differing in possessing spines of the abdominal parapodia. The following species differ from Magelona boninensis sp. nov. in possessing prostomia which are similar in length to width, and thoracic notopodial lamellae which are smooth: M. cornuta, M. cinthyae, M. lusitanica, Magelona sp. L, and M. tehuanensis. The new species shares most similarities with M. pacifica, M. montera, M. gemmata, Magelona spp. G and K, M. sinbadi, M. anuheone, and M. alexandrae in possessing prostomia which are longer than wide with distinct prostomial horns which have a degree of separation from the anterior prostomial margin. As noted above M. pacifica differs in the nature of the abdominal hooks. Magelona montera, from the Western IndoPacific, differs in the shape of the prostomial horns which are laterally rounded. Magelona gemmata and M. sinbadi, also from the Western Indo-Pacific, differ from the new species in possessing smooth notopodial thoracic lamellae. Magelona anuheone, from the Eastern Indo-Pacific, and Magelona sp. K, from the Temperate Northern Atlantic, both also possess smooth notopodial thoracic lamellae, the latter species also differs in the neuropodia of chaetiger 9 which are not triangular as in the new species. Magelona alexandrae, from the Eastern Indo-Pacific, shares many similarities with the new species, however, possesses a smooth prostomial margin and crenulate abdominal lamellae. Additionally, the margins of the notopodial thoracic lamellae are much more distinctly crenulate than in the new species.Published as part of Taylor, Abbie, Mortimer, Kate & Jimi, Naoto, 2022, Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica, pp. 451-491 in Zootaxa 5196 (4) on pages 473-480, DOI: 10.11646/zootaxa.5196.4.1, http://zenodo.org/record/723561
Declining Unionization, Rising Inequality: an Interview with Kate Bronfenbrenner
No full textKate Bronfenbrenner is director of labor education research at the New York State School of Industrial and Labor Relations at Cornell University. She worked for many years as an organizer with the United Woodcutters Association in Mississippi and the Service Employees International Union in Boston. She is the author, co-author and editor of numerous books and articles on union strategies
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