identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
E7016B15C97FFFBEFEA8FDDBFE46FA9D.text	E7016B15C97FFFBEFEA8FDDBFE46FA9D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Capitella Blainville 1828	<div><p>Genus Capitella Blainville, 1828</p><p>Type species: Capitella capitata (Fabricius, 1780) = Lumbricus capitatus Fabricius, 1780 .</p><p>Diagnosis: (afer Magalhães and Blake 2020). Prostomium conical to bluntly rounded, sometimes dorsoventrally flatened, with dorsal groove present or absent, with nuchal organs as paired slits at border between prostomium and peristomium; eyespots present or absent. Peristomium forming a complete or incomplete achaetous ring. Torax with nine segments, all chaetigerous with capillary chaetae in both rami of chaetigers 1–3, 1–4, 1–6, or 1–7, otherwise with capillaries and hooks in various combinations in both rami; chaetigers 8 and 9 with hooded hooks, mixed capillaries and hooks, or all capillaries, these arrangements sometimes growth dependent; prominent genital spines present in chaetigers 8 and 9 of males and hermaphrodites; females usually with enlarged lateral genital pores between chaetigers 7 and 8 or 8 and 9. Capillaries unilimbate, with narrow wings; hooded hooks with multiple rows of denticles above main fang. Abdominal segments with hooded hooks in both rami; capillaries absent. Branchiae present or absent. Pygidium without appendages.</p></div>	https://treatment.plazi.org/id/E7016B15C97FFFBEFEA8FDDBFE46FA9D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sun, Yanan;Bao, Qinghua;Chen, Chong;Wu, Xuwen;Ju, Yuxue;Liao, Shili;Zhou, Yadong	Sun, Yanan, Bao, Qinghua, Chen, Chong, Wu, Xuwen, Ju, Yuxue, Liao, Shili, Zhou, Yadong (2025): New species of capitellid polychaetes (Annelida: Sedentaria) add to the unique biodiversity of Indian Ocean hot vents. Zoological Journal of the Linnean Society 204 (2), DOI: 10.1093/zoolinnean/zlaf058, URL: https://doi.org/10.1093/zoolinnean/zlaf058
E7016B15C97FFFB9FEB5FAC6FED6F867.text	E7016B15C97FFFB9FEB5FAC6FED6F867.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Capitella longqiensis Sun & Bao & Chen & Wu & Ju & Liao & Zhou 2025	<div><p>Capitella longqiensis sp. nov.</p><p>(Fig. 2)</p><p>ZooBank registration: urn:lsid:zoobank.org:act: EC2FD4F3-A951- 4EAC-A106-93869CF2E29B.</p><p>Capitella sp. — Zhou et al. 2022: supplementary table S5.</p><p>Type material: Holotype (RSIO POLY49001): Southwest Indian Ridge, Longqi vent field (49°38.88′E, 37°46.80′S), depth 2778 m, TV-guided grab, R / V Xiangyanghong 10, Cruise DY 49, DY49I-S011- TVG04, 6 January 2018 . Paratype 1 (RSIO POLY49002) and paratype 2 (RSIO POLY49003): collected from the same location as the holotype .</p><p>Description: All specimens incomplete. Holotype 13 mm long, 1.3 mm wide, with 24 chaetigers. Paratypes ranging from 16 to 26.3 mm long, 0.9–1.4 mm wide, with 20–35 chaetigers. Colour in alcohol light brown to pale white (Fig. 2A). Prostomium rounded, wider than long. Peristomium wider than prostomium, longer than chaetiger 1, forming a complete achaetous ring (Fig. 2A–C). Eyespots absent. Nuchal organs not visible. Torax with nine segments, not distinctly biannulate. Chaetigers 1–5 slightly increasing in size; chaetiger 5 widest, with mid-ventral groove; chaetigers 6–7 gradually decreasing in size, narrower than chaetigers 1–5, with mid-ventral and lateral groove; chaetigers 8 and 9 similar in shape, narrower, with mid-ventral and lateral groove and running along abdomen (Fig. 2D). All three specimens with unilimbate capillaries in notopodia and neuropodia of chaetigers 1–7 (Fig. 2D) and with hooded hooks in notopodia and neuropodia of chaetigers 8 and 9. Notochaetae arranged in one or two irregular rows of 7–15 capillaries in chaetigers 1–7 and 20–22 hooded hooks in chaetigers 8 and 9 (Fig. 2E, F); neurocheatae arranged in one or two irregular rows of 4–17 capillaries and 16–20 hooded hooks. Genital spines with tips sharply curved present on chaetigers 8 and 9: chaetiger 8 with two external genital spines, chaetiger 9 with three embedded genital spines (Fig. 2G). Division between thorax and abdomen not prominent. Abdominal segments multi-annulated, as long as wide; chaetigers with 15–20 hooded hooks in a row. Hooks similar on thorax and abdomen, with long anterior shaf, a pointed and large main fang, and five or six teeth in two rows above main fang; hoods short, not extending beyond main fang (Fig. 2H, I).</p><p>Methyl Green staining patern: Prostomium, peristomium, chaetigers 1–5 and 7 lightly stained with a dark ring, chaetigers 8 and 9 darkly stained, and abdominal segments staining darkly at notopodial and neuropodial tori, whereas the rest of the abdominal segmental region is largely unstained (Fig. 2B).</p><p>Molecular identity: GenBank accessions PQ643863–PQ643865 for cox1, PQ651927 for 16S, PQ651921 for 18S, PQ651924 for 28S, and PQ651930 for H3 (also see Supporting Information, Table S2). No identical matches on GenBank for all five genes.</p><p>Etymology: Te specific epithet ‘ longqiensis ’ refers to the type locality, Longqi hydrothermal vent field, SWIR.</p><p>Type locality: Longqi hydrothemal vent field, SWIR, Indian Ocean (49°38.88′E, 37°46.80′S), depth 2778 m, in suspected inactive sulphide deposits peripheral to active areas at the Longqi hydrothermal vent field. Specimens were collected together with the neolepetopsid limpet Neolepetopsis ardua .</p><p>Distribution: Known only from the type locality.</p><p>Remarks: Capitella longqiensis belongs to a group of species of Capitella with capillary chaetae on chaetigers 1–7 and hooded hooks on chaetigers 8 and 9. Capitella longqiensis shares features with Capitella aracaensis Silva &amp; Amaral, 2017, C. blakei, and Capitella singularis (Fauvel, 1932) by exclusive capillaries on both noto- and neuropodia of chaetiger 7, the peristomium that is clearly distinct from the prostomium and forming a complete ring, and the absence of eyespots. However, these species differ in the shape of the prostomium, which is conical and smooth in C. singularis and C. blakei, rounded and smooth in C. aracaensis, and rounded with a ventral groove in C. longqiensis . Differences are also seen in the number of hooded hooks and genital spines. Both C. longqiensis and C. blakei have more hooded hooks per fascicle than C. aracaensis and C. singularis: C. longqiensis has 16–22 hooded hooks per fascicle on chaetigers 8 and 9 and 15–20 on anterior abdominal chaetigers; C. blakei has 20–22 hooks on chaetigers 8 and 9 and 25–22 hooks on anterior abdominal chaetigers; C. singularis has 5–10 hooks per fascicle on chaetigers 8 and 9 and 12 on anterior abdominal chaetigers; and C. aracaensis has 4–6 hooks on chaetigers 8 and 9 and 8–11 on anterior abdominal chaetigers. Among the deep-sea species ( C. blakei, C. iatapiunai, C. longqiensis, and C. multibranchiata), C. blakei and C. longqiensis have only capillaries on chaetigers 1–7, whereas C. iatapiunai has hooks on chaetiger 7, and C. multibranchiata has capillaries on chaetigers 1–8/9. Overall, C. longqiensis can be distinguished by the combined characteristics of having a rounded prostomium with ventral groove, a peristomium forming a complete ring, capillaries only on chaetigers 1–7, and 16–22 hooded hooks per fascicle on chaetigers 8 and 9.</p></div>	https://treatment.plazi.org/id/E7016B15C97FFFB9FEB5FAC6FED6F867	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sun, Yanan;Bao, Qinghua;Chen, Chong;Wu, Xuwen;Ju, Yuxue;Liao, Shili;Zhou, Yadong	Sun, Yanan, Bao, Qinghua, Chen, Chong, Wu, Xuwen, Ju, Yuxue, Liao, Shili, Zhou, Yadong (2025): New species of capitellid polychaetes (Annelida: Sedentaria) add to the unique biodiversity of Indian Ocean hot vents. Zoological Journal of the Linnean Society 204 (2), DOI: 10.1093/zoolinnean/zlaf058, URL: https://doi.org/10.1093/zoolinnean/zlaf058
E7016B15C979FFBBFF58FCBCFED6F864.text	E7016B15C979FFBBFF58FCBCFED6F864.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Decamastus branchiatus Sun & Bao & Chen & Wu & Ju & Liao & Zhou 2025	<div><p>Decamastus branchiatus sp. nov.</p><p>(Figs 3, 4)</p><p>ZooBank registration: urn:lsid:zoobank.org:act: 40823E5C- E8D3-412B-AE4E-2603101636BA.</p><p>Type materials: Holotype (NSMT-Pol H-979): <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=69.596664&amp;materialsCitation.latitude=-23.877666" title="Search Plazi for locations around (long 69.596664/lat -23.877666)">Central Indian Ridge</a>, Edmond vent field (69°35.80′E, 23°52.66′S), depth 3279 m, SHINKI 6500, R / V Yokosuka, Cruise YK 16-E02, Dive 6K# 1457, 26 February 2016. Preserved in 70% ethanol.</p><p>Paratype 1 (NSMT-Pol P-980) and paratype 2 (NSMT-Pol P-981), same data and preservation as the holotype.</p><p>Description: Holotype complete, 50 mm long, 2.2 mm wide, with 116 chaetigers. Paratypes incomplete, anterior fragments; paratype 1 (NSMT-Pol P-980) 23 mm long, 1.5 mm wide, with 20 chaetigers; paratype 2 (NSMT-Pol P-981) 9.4 mm long, 0.9 mm wide, with 50 chaetigers. Colour in alcohol pale white. Epithelium smooth (Fig. 3A–D). Prostomium broadly rounded, with ventral groove (Fig. 3E, F). Eyespots and nuchal organs not observed. Nuchal organ depression posterolaterally in junction between prostomium and peristomium (Fig. 3F). Peristomium as a biannulate achaetous ring, not clearly distinct from the first chaetiger (Fig. 3A, D). Torax with 10 chaetigers, mid-ventral groovestartingfromchaetiger 4 andrunningalongabdomen (Fig. 3C). First chaetiger biramous. Chaetigers 1–9 with bilimbate capillaries only in both notopodia and neuropodia, 8–16 per fascicle; chaetiger 10 transitional, with 13–15 notopodial capillaries per fascicle and 11 or 12 neuropodial hooded hooks per fascicle (Fig. 3G, H). Hooded hooks with long anterior shaf, a pointed and large main fang, and multiple teeth in three rows above main fang; hoods moderate, not extending beyond main fang (Fig. 3I, J). Genital pores not observed. Transition between thorax and abdomen indistinct, marked by chaetal change (Fig. 3G). Abdominal chaetigers with hooded hooks only, multi-annulated. Abdomen notopodia clearly separated from neuropodia. Neuropodial lobe low at anterior abdomen, elevated from about chaetiger 25, with rounded expanded end on dorsolateral side (Fig. 4A, C). Notopodia reduced, widely separated dorsally, connected by an interramal ridge (Fig. 4B). Branchiae present on both noto- and neuropodia; notopodial branchiae start from chaetiger 20–30, simple digitate filaments, single to up to three, arising from lower region of lobe; neuropodial branchiae start from chaetiger 15–25, arising from the dorsal side of neuropodia lobes, single digitate filament (Fig. 4C, D). Anterior abdominal chaetigers with 13–15 hooded hooks per fascicle, reduced to two or three in far posterior end. Abdominal hooded hook with two rows of teeth above main fang, three teeth in basal row, and two in superior row (Fig. 4E). Pygidium sample, without appendages (Fig. 4F).</p><p>Methyl Green staining patern: Peristomium, prostomium, and all thoracic chaetigers stained uniformly with distinct speckles, leaving parapodial rami and ventral groove unstained. Abdominal chaetigers with distinct bands of speckles on posterior half of segment, encircling noto- and neuropodial tori and forming complete rings (Fig. 3B–D).</p><p>Molecular identity: GenBank accessions PQ643866– PQ643867 for cox1, PQ651929 for 16S, PQ651923 for 18S, PQ651926 for 28S, and PQ651932 for H3 (also see Supporting Information, Table S2). No identical matches on GenBank for all five genes.</p><p>Etymology: Te specific epithet ‘ branchiatus ’ refers to the presence of branchiae on both noto- and neuropodia, a unique feature of this species.</p><p>Type locality: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=69.596664&amp;materialsCitation.latitude=-23.877666" title="Search Plazi for locations around (long 69.596664/lat -23.877666)">Edmond</a> vent field, Central Indian Ridge, Indian Ocean (69°35.80′E, 23°52.66′S), depth 3279 m. Te worms were found from the wall of a large, active vent mound called ‘Great Shrimp Castle’, together with Rimicaris kairei Watabe &amp; Hashimoto, 2002 and Aloiniconcha marisindica Okutani, 2014 (Fig. 1B) .</p><p>Distribution: Known only from the type locality.</p><p>Remarks: When compared with the other four described species of Decamastus ( D. gracilis, D. nudus Tomassin, 1970, Decamastus okuilin Hernández-Alcántara, Solís-Weiss &amp; García-Garza, 2019 and Decamastus sp. A sensu Ewing 1984), D. branchiatus has unique characteristics for the genus, such as the rounded prostomium and the presence of filamentous branchiae on abdominal noto- and neuropodia. Besides, the new species is readily distinguished from its congeners by a combination of characteristics, such as the absence of a palpode (present in D. gracilis and D. okuilin), the absence of eyespots (present in D. nudus, D. okuilin, and Decamastus sp. A sensu Ewing, 1984), the first chaetiger biramous (uniramous in D. nudus, D. okuilin, and Decamastus sp. A sensu Ewing, 1984), and smooth thoracic epithelium (tessellated in D. gracilis, D. nudus, and Decamastus sp. A sensu Ewing, 1984).</p><p>Te overall body appearance of D. branchiatus resembles C. multibranchiata, which is a deep-sea species found from deployed wood, by the broadly rounded prostomium, the presence of a ventral groove, branchiae on both notopodia and neuropodia, and the Methyl Green staining patern of the thorax (Magalhães and Hilliard 2022). However, they should be assigned to different genera based on the number of thoracic chaetigers (10 in D. branchiatus vs. 9 in C. multibranchiata). Besides, the two species show clear ecological and geographical separation: C. multibranchiata is known only from deployed wood from the Northeast Pacific, whereas D. branchiatus is found from the vent fields of the Indian Ocean (also see the Discussion section).</p><p>Species of several genera have been described with branchiae on abdominal chaetigers, either associated with only notopodial lobes or neuropodial lobes (Magalhães and Hilliard 2022). Decamastus branchiatus and C. multibranchiata are the only two species in the family having branchiae in both notopodial and neuropodial lobes.</p></div>	https://treatment.plazi.org/id/E7016B15C979FFBBFF58FCBCFED6F864	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sun, Yanan;Bao, Qinghua;Chen, Chong;Wu, Xuwen;Ju, Yuxue;Liao, Shili;Zhou, Yadong	Sun, Yanan, Bao, Qinghua, Chen, Chong, Wu, Xuwen, Ju, Yuxue, Liao, Shili, Zhou, Yadong (2025): New species of capitellid polychaetes (Annelida: Sedentaria) add to the unique biodiversity of Indian Ocean hot vents. Zoological Journal of the Linnean Society 204 (2), DOI: 10.1093/zoolinnean/zlaf058, URL: https://doi.org/10.1093/zoolinnean/zlaf058
E7016B15C978FFB8FC6EFA2CFD1AFD24.text	E7016B15C978FFB8FC6EFA2CFD1AFD24.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Decamastus Hartman 1963	<div><p>Genus Decamastus Hartman, 1963</p><p>Type species: Decamastus gracilis Hartman, 1963 .</p><p>Diagnosis: (amended afer Hernández-Alcántara et al. 2019). Prostomium conical or rounded, palpode present or absent; eyespots present or absent; nuchal organs absent. Achaetous segment absent. First chaetiger uniramous or biramous. Ten thoracic chaetigers with capillary chaetae in both rami or last one or two thoracic chaetigers with hooded hooks in neuropodia. Abdominal segments with hooded hooks in both rami. Branchiae present or absent; when present, digitate filaments on both noto- and neuropodia from middle-abdominal chaetigers. Lateral organs not observed. Pygidium simple, without appendages.</p><p>Remarks: Te genus description originally recognized only species with 10 thoracic chaetigers with capillaries. Black (2000) amended the description to include specimens with hooded hooks in the last few thoracic neuropodia. Specimens from the Edmond vent field most closely fit the definition of Decamastus by having 10 thoracic chaetigers with capillaries on chaetigers 1–9 and transitional chaetiger 10, abdominal chaetigers with hooded hooks, and a biramous first chaetiger. Te vent specimens have digitate branchiae rising from middle abdominal chaetigers, which is a unique characteristic for the genus and should be included in the genus definition. Two monotypic genera, Pseudoleiocapitella Harmelin, 1964 and Pseudonotomastus Warren &amp; Parker, 1994, have 10 thoracic chaetigers with capillary chaetae only. Pseudoleiocapitella can be distinguished from Decamastus by the presence of capillaries in the first two abdominal chaetigers. Pseudonotomastus differs from Decamastus by the presence of an achaetous chaetiger. Neonotomastus Fauchald, 1972 was also erected with 10 thoracic chaetigers with capillaries only. However, García-Garza and León-González (2011) found 11 thoracic chaetigers with capillaries when re-examining the type materials. Neonotomastus is also distinct from Decamastus by the presence of capillaries in the first two abdominal chaetigers.</p></div>	https://treatment.plazi.org/id/E7016B15C978FFB8FC6EFA2CFD1AFD24	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sun, Yanan;Bao, Qinghua;Chen, Chong;Wu, Xuwen;Ju, Yuxue;Liao, Shili;Zhou, Yadong	Sun, Yanan, Bao, Qinghua, Chen, Chong, Wu, Xuwen, Ju, Yuxue, Liao, Shili, Zhou, Yadong (2025): New species of capitellid polychaetes (Annelida: Sedentaria) add to the unique biodiversity of Indian Ocean hot vents. Zoological Journal of the Linnean Society 204 (2), DOI: 10.1093/zoolinnean/zlaf058, URL: https://doi.org/10.1093/zoolinnean/zlaf058
E7016B15C97AFFBBFC74F9ACFB07F864.text	E7016B15C97AFFBBFC74F9ACFB07F864.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Notomastus M. Sars 1851	<div><p>Genus Notomastus M. Sars, 1851</p><p>Type species: Notomastus latericeus M. Sars, 1851 .</p><p>Diagnosis: (afer Hernández-Alcántara et al. 2022) Prostomium conical, palpode present or absent; eyespots present in multiple spots or absent. Peristomium clearly distinct from prostomium. First chaetiger uniramous or biramous. Eleven thoracic chaetigers. Chaetigers 1–11 with only capillaries or last one to three thoracic chaetigers with notopodial capillaries and neuropodial hooks. Abdominal segments with only hooded hooks. Branchiae present or lacking. Genital pores present or absent. Lateral organs present on thorax and abdomen. Pygidium unadorned but unknown for many species.</p></div>	https://treatment.plazi.org/id/E7016B15C97AFFBBFC74F9ACFB07F864	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sun, Yanan;Bao, Qinghua;Chen, Chong;Wu, Xuwen;Ju, Yuxue;Liao, Shili;Zhou, Yadong	Sun, Yanan, Bao, Qinghua, Chen, Chong, Wu, Xuwen, Ju, Yuxue, Liao, Shili, Zhou, Yadong (2025): New species of capitellid polychaetes (Annelida: Sedentaria) add to the unique biodiversity of Indian Ocean hot vents. Zoological Journal of the Linnean Society 204 (2), DOI: 10.1093/zoolinnean/zlaf058, URL: https://doi.org/10.1093/zoolinnean/zlaf058
