Sphaerodromia nux Alcock 1900
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| author | Padate Sherine Sonia Cubelio Masatsune Takeda, Vinay P. |
| author_facet | Padate Sherine Sonia Cubelio Masatsune Takeda, Vinay P. |
| contents | <p><b><i>Sphaerodromia nux</i> Alcock, 1900</b></p><p>(Figs. 2D, E, 4)</p><p><i>Sphaerodromia nux</i> Alcock, 1900a: 154 (type locality: Gulf of Martaban). — Alcock, 1901: 40, 78, pl. 4, fig. 19. — Ihle, 1913: 92 (list). — Lewinsohn, 1984: 115, pl. 3, fig. B, pl. 4, figs. C–D. — McLay, 1991: 463, 465 (discussion), tab. 1 (comparison). — McLay and Crosnier, 1991: 186 (discussion). — McLay, 1993: 126 (list), 127 (key). — Crosnier, 1994: 347 (remarks). — McLay, 2001: 821 (key, description). — Guinot and Tavares, 2003: 107, 108, figs. 22B, 23A–B. — Ng <i>et al.</i>, 2008: 36 (list). — Trivedi <i>et al.</i>, 2018: 36 (tab. 1).</p><p><i>Material examined.</i> 1 male (CL 29.3 mm, CW 33.1 mm) (IO /SS/BRC/00295), west of South Andaman Island, Bay of Bengal, FORVSS stn. 349 (leg II) 09, 11.93°N 92.28°E, 290 m, coll. Dr. Aneesh Kumar K. V., HSDT (CV), 12 April 2016.</p><p><i>Remarks. Sphaerodromia nux</i> was originally described from supposedly juvenile specimens (1 male of undetermined size, 1 female 10 × 11 mm) from the Gulf of Martaban off Myanmar at 129 m depth (Alcock, 1900a). The original description by Alcock (1900a) described only the carapace, and a subsequent monograph by Alcock (1901) provided a short description of the third maxilliped, chelipeds, and the vestigial male pleopods on pleonal somites 3–5 supplemented with a line illustration of the dorsal habitus (Alcock, 1901: fig. 19). Lewinsohn (1984) redescribed this species from adult specimens from Madagascar, and reported differences from the type specimen in the absence of a gap between the anterior margin of the third maxillipeds and the buccal cavern. McLay(1991)provided a detailed comparison between <i>S. nux</i> and <i>Sphaerodromia ducoussoi</i> McLay, 1991, and supplemented with a table comparing the diagnostic morphological characters of all <i>Sphaerodromia</i> species. Crosnier (1994) commented that <i>S. nux</i> possessed well-developed podobranchs on the cheliped and pereopod 2, and vestigial bud-like podobranchs on pereopod 3. McLay (2001) amended Lewinsohn’s redescription and added morphological details of female specimens from the Philippines. A systematic revision of the family Dromiidae by Guinot and Tavares (2003) included illustrations of the vestigial male pleopods, P5 coxa and G2.</p><p>The present specimen agrees with the updated description by McLay (2001), except for the presence of lines of compressed granules on the P2–P3 meri (Fig. 4F–G) and a relatively higher dactylus length/ propodus length of 0.90 for P2–P3. The present observation is a new record in Indian waters.</p><p><i>Distribution.</i> Gulf of Martaban at 129 m depth (Alcock, 1900a; 1901), Madagascar (Guinot and Tavares, 2003), and Andaman Sea, India at 290 m depth (present study).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14668417 |
| institution | Zenodo |
| language | |
| publishDate | 2021 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Sphaerodromia nux Alcock 1900 Padate Sherine Sonia Cubelio Masatsune Takeda, Vinay P. Biodiversity Taxonomy Animalia Arthropoda Malacostraca Decapoda Dromiidae Sphaerodromia Sphaerodromia nux <p><b><i>Sphaerodromia nux</i> Alcock, 1900</b></p><p>(Figs. 2D, E, 4)</p><p><i>Sphaerodromia nux</i> Alcock, 1900a: 154 (type locality: Gulf of Martaban). — Alcock, 1901: 40, 78, pl. 4, fig. 19. — Ihle, 1913: 92 (list). — Lewinsohn, 1984: 115, pl. 3, fig. B, pl. 4, figs. C–D. — McLay, 1991: 463, 465 (discussion), tab. 1 (comparison). — McLay and Crosnier, 1991: 186 (discussion). — McLay, 1993: 126 (list), 127 (key). — Crosnier, 1994: 347 (remarks). — McLay, 2001: 821 (key, description). — Guinot and Tavares, 2003: 107, 108, figs. 22B, 23A–B. — Ng <i>et al.</i>, 2008: 36 (list). — Trivedi <i>et al.</i>, 2018: 36 (tab. 1).</p><p><i>Material examined.</i> 1 male (CL 29.3 mm, CW 33.1 mm) (IO /SS/BRC/00295), west of South Andaman Island, Bay of Bengal, FORVSS stn. 349 (leg II) 09, 11.93°N 92.28°E, 290 m, coll. Dr. Aneesh Kumar K. V., HSDT (CV), 12 April 2016.</p><p><i>Remarks. Sphaerodromia nux</i> was originally described from supposedly juvenile specimens (1 male of undetermined size, 1 female 10 × 11 mm) from the Gulf of Martaban off Myanmar at 129 m depth (Alcock, 1900a). The original description by Alcock (1900a) described only the carapace, and a subsequent monograph by Alcock (1901) provided a short description of the third maxilliped, chelipeds, and the vestigial male pleopods on pleonal somites 3–5 supplemented with a line illustration of the dorsal habitus (Alcock, 1901: fig. 19). Lewinsohn (1984) redescribed this species from adult specimens from Madagascar, and reported differences from the type specimen in the absence of a gap between the anterior margin of the third maxillipeds and the buccal cavern. McLay(1991)provided a detailed comparison between <i>S. nux</i> and <i>Sphaerodromia ducoussoi</i> McLay, 1991, and supplemented with a table comparing the diagnostic morphological characters of all <i>Sphaerodromia</i> species. Crosnier (1994) commented that <i>S. nux</i> possessed well-developed podobranchs on the cheliped and pereopod 2, and vestigial bud-like podobranchs on pereopod 3. McLay (2001) amended Lewinsohn’s redescription and added morphological details of female specimens from the Philippines. A systematic revision of the family Dromiidae by Guinot and Tavares (2003) included illustrations of the vestigial male pleopods, P5 coxa and G2.</p><p>The present specimen agrees with the updated description by McLay (2001), except for the presence of lines of compressed granules on the P2–P3 meri (Fig. 4F–G) and a relatively higher dactylus length/ propodus length of 0.90 for P2–P3. The present observation is a new record in Indian waters.</p><p><i>Distribution.</i> Gulf of Martaban at 129 m depth (Alcock, 1900a; 1901), Madagascar (Guinot and Tavares, 2003), and Andaman Sea, India at 290 m depth (present study).</p> |
| title | Sphaerodromia nux Alcock 1900 |
| topic | Biodiversity Taxonomy Animalia Arthropoda Malacostraca Decapoda Dromiidae Sphaerodromia Sphaerodromia nux |
| url | https://doi.org/10.5281/zenodo.14668417 |