Eutyphoeus morehensis Tiwari & Yadav 2025, sp. nov.
Fuente:
Zenodo
Salvato in:
| Autori principali: | , , , , , |
|---|---|
| Natura: | Recurso digital |
| Pubblicazione: |
Zenodo
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866902242079014912 |
|---|---|
| author | Tiwari, Nalini Tiwari, Pooja Shilpi, Kaushik James, Samuel W. Gupta, Neelima Yadav, Shweta |
| author_facet | Tiwari, Nalini Tiwari, Pooja Shilpi, Kaushik James, Samuel W. Gupta, Neelima Yadav, Shweta |
| contents | <p><b><i>Eutyphoeus morehensis</i> Tiwari & Yadav sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 9E2C0A11-3E55-427D-B26D-0DD145BE44A9</p><p>Figs 2, 14; Tables 1–2</p><p><b>Diagnosis</b></p><p>Length 96–150 mm, diameter 3–4 mm, segments 190–210. Closed epilobic prostomium. First dorsal pore in ix/x. Male genital orifices in xvii avestibulate, apenile. In intersegment 7/8, there is a single pair of spermathecal pores centred at <i>b</i>. Pair of presetal genital marking present ventrally in segments xiii at <i>a</i> on xvi paired, postsetal at <i>ab.</i> Septa 6/7/8 thickened. Lateral intestinal caeca in xxvii. Holandric, seminal vesicles in xii extends up to xiv. Three/four pairs of supra-intestinal glands. Prostate tubular, duct long muscular with one or two loops. Bidiverticulate spermathecae. Penial setae ornamented with circles of spine, shaft straight, tip bluntly rounded. Genital marking glands present.</p><p><b>Etymology</b></p><p>The epithet ‘ <i>morehensis</i> ’ refers to the name of Moreh, a small town located within the Tengnoupal district, which is significant as part of the species’ habitat. By incorporating ‘ <i>morehensis</i> ’ into its scientific name, this earthworm species pays homage to the geographical region where it was first discovered, highlighting the importance of local ecosystems in biodiversity conservation efforts.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>INDIA – <b>Manipur</b> • clitellate (2–3 segments from the caudal region taken for DNA extraction); Kwatha Range, Yangoupokpi-Lokchao Wildlife Sanctuary; 24.3238° N, 94.2923° E; 9 Oct. 2017; Shweta Yadav leg.; registration number – ZSI CZRC T/6; MNP17-1065-43A5.</p><p><b>Paratypes</b></p><p>INDIA – <b>Manipur</b> • 2 clitellates; Tengnoupal, Yangoupokpi-Lokchao Wildlife Sanctuary; 24.3831° N, 94.1492° E; 10 Oct, 2017; Shweta Yadav leg.; MNP17-1061 - 43A1.</p><p><b>Other material</b></p><p>INDIA – <b>Manipur</b> • 6 specs; same data as for holotype; MNP17-1064 - 43 A4, MNP17-1066 - 43 A6, MNP17-1069 - 43 A9, MNP17-1070 - 43 A10, MNP17-1073 - 43 A13, MNP17-1074 - 43 A14 • 6 specs; same data as for holotype; MNP17-1097 - 44 A23, MNP17-1098 - 44 A24, MNP17-1099 - 44 A25, MNP17-1101 - 44 A27, MNP17-1102 - 44 A28, MNP17-1103 - 44 A29.</p><p><b>Description</b></p><p><b>Holotype</b></p><p>Length 150 mm, diameter 3.94 mm at preclitellar region. Total number of segments ca 205. Prostomium closed epilobic. Color chilean pink, uniformly pigmented. First dorsal pore starts from intersegmental furrow of 9/10. Setae start from segment ii, <i>aa</i>: <i>ab</i>: <i>bc</i>: <i>cd</i>: <i>dd</i> = 2.62: 1.05: 2.34: 1: 10.63 on xii, <i>aa</i>: <i>ab</i>: <i>bc</i>: <i>cd</i>: <i>dd</i> = 3.03: 1: 1.93: 1.29: 9.47 on xxiv and <i>dd</i> <half circumference of body. Clitellum annular, covering ½ xiii–⅓ xvii. Spermathecal pore on intersegmental region of 7/8 centered at <i>b</i>, slit-like aperture, surrounded by swollen lips. Female pores in separate patch, paired, presetal at <i>a</i> on xiv. Male genital region appears as hemispherical, bowl-shaped structure covering segments 17 and 18, with narrow furrow separating them, avestibulate, apenile, on surface of body, male genital orifices discharge in transverse fissures on circular porophores surrounded with grooved rounded circle bounded with translucent margin, at <i>b</i>. Genital markings present on xvi paired, postsetal at <i>ab</i> with dark inner circle followed by whitish large swollen ring.</p><p>Septa 6/7/8 thickened present. Gizzard in viii. Pair of discrete intramural calciferous glands in xii. Intestine begins in xiv. Lateral intestinal caeca in xxvii. Typhlosole simple, lamelliform originated from xxviii. Ventral intestinal caeca 16–18, present in segments xxx–lvi. Supra-intestinal glands 4 pairs in segments lxxiv–lxxix. Last pair of hearts in xiii. Holandric, testis sac in x and xi, annular, seminal vesicles in ix and xii, posterior one extends up to xiv. Single pair of prostates extends from segments xvii to xix or xx. Each prostate has a long, muscular duct that opens into the body wall at segment xvii. Glandular part with one or two loops. One pair of spermathecae with two lateral diverticula, lobulated with 4–6 seminal chambers, which open separately into duct; ampulla oblate spheroid; duct slender, long, covered with bunch of nephridia. Penial setae two per battery, length 1.1 mm, width 0.036 mm, ornamented with circles of spine, shaft straight, tip bluntly rounded. Paired genital marking glands present on xvi, sessile.</p><p><b>Variation</b></p><p>Differences were noted in the number and position of the genital markings, especially in paratype MNP17-1061-43A1. The genital markings present in this paratype are on xiii, xiv, xv and xviii, paired, postsetal at <i>a</i> with 3 pairs of supra-intestinal glands in lxix–lxxiii.</p><p><b>Remarks</b></p><p>The novel species <i>Eutyphoeus morehensis</i> Tiwari & Yadav sp. nov. is classified within the <i>hastatus</i> group as proposed by Gates (1958). This group is characterized by holandric testes, a lumbricine arrangement of setae, a complete dorsal blood vessel, and paired female pores. Gates originally included four species in the <i>hastatus</i> group: <i>E. hastatus</i> Gates, 1929, <i>E. manipurensis manipurensis</i>, <i>E. marmoreus</i> Gates, 1933 and <i>E. bullatus</i> Gates, 1933. However, Gates (1958) limited this grouping to Burmese species of <i>Eutyphoeus</i>, while Indian species were placed in a separate category.</p><p>Subsequently, additional Indian species were discovered and incorporated into the <i>hastatus</i> group, including <i>E. mizoramensis</i> Julka, Ramanujam & Lalthanzara, 2005; <i>E. phawngpuiensis</i> Tiwari, Lone, Thakur, James & Yadav, 2021 and <i>E. tawi</i> Tiwari, Lone, Thakur, James & Yadav, 2021. Given this expanded classification, we propose that Indian species such as <i>E. incommodus</i> (Beddard, 1901), <i>E. annandalei</i> Michaelsen, 1907, and <i>E. quadripapilatus</i> Michaelsen, 1907 should also be included in the <i>E. hastatus</i> group, as they share the characteristic holandric male organs and paired female pores.</p><p>The novel species is distinct from other species in the group by the position of its spermathecal pores, which are centered at <i>b</i>, a trait shared only with <i>E. tawi</i> and <i>E. marmoreus</i>. In contrast, the spermathecal pores of <i>E. manipurensis manipurensis</i>, <i>E. mizoramensis</i>, <i>E. quadripapilatus</i>, and <i>E. phawngpuiensis</i> are located at <i>a</i> or <i>ab</i>, while those of <i>E. annandalei</i> and <i>E. incommodus</i> are positioned along the setal line of <i>bc</i>, and <i>E. hastatus</i> has at <i>c</i>.</p><p>Additionally, <i>E. tawi</i> and <i>E. marmoreus</i> are characterized by vestibulate male genital orifices, whereas the novel species is distinguished by its avestibulate male genital orifices (Table 1).</p><p><b>DNA barcode</b></p><p>The COI barcode data for the holotype, with process ID IEW1019-17, has been assigned the BIN number BOLD: ADL1325. For the species <i>Eutyphoeus morehensis</i> sp. nov, the mean intraspecific divergence is 1.17%, with a maximum intraspecific divergence of 2.23%. Its nearest neighbor species is <i>Eutyphoeus lamdengensis</i> sp. nov. with a nearest neighbor distance of 10.6% (Table 2). All paratypes and syntypes of the novel species share the same BIN number, BOLD: ADL1325, without any BIN discordance.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17107448 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Eutyphoeus morehensis Tiwari & Yadav 2025, sp. nov. Tiwari, Nalini Tiwari, Pooja Shilpi, Kaushik James, Samuel W. Gupta, Neelima Yadav, Shweta Biodiversity Taxonomy Animalia Annelida Clitellata Crassiclitellata Octochaetidae Eutyphoeus Eutyphoeus morehensis <p><b><i>Eutyphoeus morehensis</i> Tiwari & Yadav sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 9E2C0A11-3E55-427D-B26D-0DD145BE44A9</p><p>Figs 2, 14; Tables 1–2</p><p><b>Diagnosis</b></p><p>Length 96–150 mm, diameter 3–4 mm, segments 190–210. Closed epilobic prostomium. First dorsal pore in ix/x. Male genital orifices in xvii avestibulate, apenile. In intersegment 7/8, there is a single pair of spermathecal pores centred at <i>b</i>. Pair of presetal genital marking present ventrally in segments xiii at <i>a</i> on xvi paired, postsetal at <i>ab.</i> Septa 6/7/8 thickened. Lateral intestinal caeca in xxvii. Holandric, seminal vesicles in xii extends up to xiv. Three/four pairs of supra-intestinal glands. Prostate tubular, duct long muscular with one or two loops. Bidiverticulate spermathecae. Penial setae ornamented with circles of spine, shaft straight, tip bluntly rounded. Genital marking glands present.</p><p><b>Etymology</b></p><p>The epithet ‘ <i>morehensis</i> ’ refers to the name of Moreh, a small town located within the Tengnoupal district, which is significant as part of the species’ habitat. By incorporating ‘ <i>morehensis</i> ’ into its scientific name, this earthworm species pays homage to the geographical region where it was first discovered, highlighting the importance of local ecosystems in biodiversity conservation efforts.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>INDIA – <b>Manipur</b> • clitellate (2–3 segments from the caudal region taken for DNA extraction); Kwatha Range, Yangoupokpi-Lokchao Wildlife Sanctuary; 24.3238° N, 94.2923° E; 9 Oct. 2017; Shweta Yadav leg.; registration number – ZSI CZRC T/6; MNP17-1065-43A5.</p><p><b>Paratypes</b></p><p>INDIA – <b>Manipur</b> • 2 clitellates; Tengnoupal, Yangoupokpi-Lokchao Wildlife Sanctuary; 24.3831° N, 94.1492° E; 10 Oct, 2017; Shweta Yadav leg.; MNP17-1061 - 43A1.</p><p><b>Other material</b></p><p>INDIA – <b>Manipur</b> • 6 specs; same data as for holotype; MNP17-1064 - 43 A4, MNP17-1066 - 43 A6, MNP17-1069 - 43 A9, MNP17-1070 - 43 A10, MNP17-1073 - 43 A13, MNP17-1074 - 43 A14 • 6 specs; same data as for holotype; MNP17-1097 - 44 A23, MNP17-1098 - 44 A24, MNP17-1099 - 44 A25, MNP17-1101 - 44 A27, MNP17-1102 - 44 A28, MNP17-1103 - 44 A29.</p><p><b>Description</b></p><p><b>Holotype</b></p><p>Length 150 mm, diameter 3.94 mm at preclitellar region. Total number of segments ca 205. Prostomium closed epilobic. Color chilean pink, uniformly pigmented. First dorsal pore starts from intersegmental furrow of 9/10. Setae start from segment ii, <i>aa</i>: <i>ab</i>: <i>bc</i>: <i>cd</i>: <i>dd</i> = 2.62: 1.05: 2.34: 1: 10.63 on xii, <i>aa</i>: <i>ab</i>: <i>bc</i>: <i>cd</i>: <i>dd</i> = 3.03: 1: 1.93: 1.29: 9.47 on xxiv and <i>dd</i> <half circumference of body. Clitellum annular, covering ½ xiii–⅓ xvii. Spermathecal pore on intersegmental region of 7/8 centered at <i>b</i>, slit-like aperture, surrounded by swollen lips. Female pores in separate patch, paired, presetal at <i>a</i> on xiv. Male genital region appears as hemispherical, bowl-shaped structure covering segments 17 and 18, with narrow furrow separating them, avestibulate, apenile, on surface of body, male genital orifices discharge in transverse fissures on circular porophores surrounded with grooved rounded circle bounded with translucent margin, at <i>b</i>. Genital markings present on xvi paired, postsetal at <i>ab</i> with dark inner circle followed by whitish large swollen ring.</p><p>Septa 6/7/8 thickened present. Gizzard in viii. Pair of discrete intramural calciferous glands in xii. Intestine begins in xiv. Lateral intestinal caeca in xxvii. Typhlosole simple, lamelliform originated from xxviii. Ventral intestinal caeca 16–18, present in segments xxx–lvi. Supra-intestinal glands 4 pairs in segments lxxiv–lxxix. Last pair of hearts in xiii. Holandric, testis sac in x and xi, annular, seminal vesicles in ix and xii, posterior one extends up to xiv. Single pair of prostates extends from segments xvii to xix or xx. Each prostate has a long, muscular duct that opens into the body wall at segment xvii. Glandular part with one or two loops. One pair of spermathecae with two lateral diverticula, lobulated with 4–6 seminal chambers, which open separately into duct; ampulla oblate spheroid; duct slender, long, covered with bunch of nephridia. Penial setae two per battery, length 1.1 mm, width 0.036 mm, ornamented with circles of spine, shaft straight, tip bluntly rounded. Paired genital marking glands present on xvi, sessile.</p><p><b>Variation</b></p><p>Differences were noted in the number and position of the genital markings, especially in paratype MNP17-1061-43A1. The genital markings present in this paratype are on xiii, xiv, xv and xviii, paired, postsetal at <i>a</i> with 3 pairs of supra-intestinal glands in lxix–lxxiii.</p><p><b>Remarks</b></p><p>The novel species <i>Eutyphoeus morehensis</i> Tiwari & Yadav sp. nov. is classified within the <i>hastatus</i> group as proposed by Gates (1958). This group is characterized by holandric testes, a lumbricine arrangement of setae, a complete dorsal blood vessel, and paired female pores. Gates originally included four species in the <i>hastatus</i> group: <i>E. hastatus</i> Gates, 1929, <i>E. manipurensis manipurensis</i>, <i>E. marmoreus</i> Gates, 1933 and <i>E. bullatus</i> Gates, 1933. However, Gates (1958) limited this grouping to Burmese species of <i>Eutyphoeus</i>, while Indian species were placed in a separate category.</p><p>Subsequently, additional Indian species were discovered and incorporated into the <i>hastatus</i> group, including <i>E. mizoramensis</i> Julka, Ramanujam & Lalthanzara, 2005; <i>E. phawngpuiensis</i> Tiwari, Lone, Thakur, James & Yadav, 2021 and <i>E. tawi</i> Tiwari, Lone, Thakur, James & Yadav, 2021. Given this expanded classification, we propose that Indian species such as <i>E. incommodus</i> (Beddard, 1901), <i>E. annandalei</i> Michaelsen, 1907, and <i>E. quadripapilatus</i> Michaelsen, 1907 should also be included in the <i>E. hastatus</i> group, as they share the characteristic holandric male organs and paired female pores.</p><p>The novel species is distinct from other species in the group by the position of its spermathecal pores, which are centered at <i>b</i>, a trait shared only with <i>E. tawi</i> and <i>E. marmoreus</i>. In contrast, the spermathecal pores of <i>E. manipurensis manipurensis</i>, <i>E. mizoramensis</i>, <i>E. quadripapilatus</i>, and <i>E. phawngpuiensis</i> are located at <i>a</i> or <i>ab</i>, while those of <i>E. annandalei</i> and <i>E. incommodus</i> are positioned along the setal line of <i>bc</i>, and <i>E. hastatus</i> has at <i>c</i>.</p><p>Additionally, <i>E. tawi</i> and <i>E. marmoreus</i> are characterized by vestibulate male genital orifices, whereas the novel species is distinguished by its avestibulate male genital orifices (Table 1).</p><p><b>DNA barcode</b></p><p>The COI barcode data for the holotype, with process ID IEW1019-17, has been assigned the BIN number BOLD: ADL1325. For the species <i>Eutyphoeus morehensis</i> sp. nov, the mean intraspecific divergence is 1.17%, with a maximum intraspecific divergence of 2.23%. Its nearest neighbor species is <i>Eutyphoeus lamdengensis</i> sp. nov. with a nearest neighbor distance of 10.6% (Table 2). All paratypes and syntypes of the novel species share the same BIN number, BOLD: ADL1325, without any BIN discordance.</p> |
| title | Eutyphoeus morehensis Tiwari & Yadav 2025, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Annelida Clitellata Crassiclitellata Octochaetidae Eutyphoeus Eutyphoeus morehensis |
| url | https://doi.org/10.5281/zenodo.17107448 |