Pilumnus curvipenis Komai and Motoh 2012

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Autores principales: Zou, Wenjun, Jiang, Qin, Wang, Yanling, Wei, Wenbin, Sun, Xiaodong, Basu, Karen, Chen, Qiuyu, Kotecha, Aachal, Li, Sijing, Liu, Ruyuan, Patel, Vaibhavi, Chen, Youxin
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author Zou, Wenjun
Jiang, Qin
Wang, Yanling
Wei, Wenbin
Sun, Xiaodong
Basu, Karen
Chen, Qiuyu
Kotecha, Aachal
Li, Sijing
Liu, Ruyuan
Patel, Vaibhavi
Chen, Youxin
author_facet Zou, Wenjun
Jiang, Qin
Wang, Yanling
Wei, Wenbin
Sun, Xiaodong
Basu, Karen
Chen, Qiuyu
Kotecha, Aachal
Li, Sijing
Liu, Ruyuan
Patel, Vaibhavi
Chen, Youxin
contents <p><b><i>Pilumnus curvipenis</i> Komai and Motoh, 2012</b></p><p>(Fig. 4A)</p><p><i>Pilumnus dofleini</i> Balss, 1933: Ng, 2000, p. 301, figs. 1–2. — Takeda & Komatsu, 2005, p. 284.</p><p><i>Pilumnus curvipenis</i> Komai & Motoh, 2012, p. 17, figs. 12–13, 18A–B. — Takeda & Komatsu, 2020, p. 111.</p><p><i>Material examined</i>. Takase submarine bank (Fig. 1; 34°28.64′N, 139°12.26′E, 105 m depth), northwest off Nii-jima I., Izu Is., 1 8 (NSMT-Cr 11034; cb 4.7×cl 3.7 mm), 11-IX-1989, dredged by TV <i>Umitaka Maru</i> of Tokyo University of Fisheries (now, Tokyo University of Marine Science and Technology) and donated by T. Okutani; Takase submarine bank (34°26.11′N, 139°09.75′E, 112 m depth), 1 ovig.8 (NSMT-Cr 11052; cb 5.8×cl 3.8 mm), 11-IX-1989, dredged by TV <i>Umitaka Maru</i>.</p><p><i>Comparative material examined</i>. Shin-Kurose submarine bank (Fig. 1; 33°32′N, 140°10′E), southeast off Mikura-jima I., Izu Is., 160–230 m depth, 3 ƏƏ, 1 ovig.8 (NSMT-Cr 6665), 26-XI-1974, T. Okutani leg.; Hyotanse submarine bank (Fig. 1; 34°21′N, 139°02.36′E, 105 m depth), northwest off Kozu-shima I., Izu Is., 1 ovig.8 (NSMT-Cr 6666), 26-VI-1973, T. Okutani leg.</p><p>Off Kasari Bay, Amami-Oshima I., Ryukyu Is., 120–122 m depth, 1 Ə (NSMT-Cr 16204; cb, left branchial region heavily deformed×cl 2.6 mm), dredged by tugboat <i>Daiyu Maru No. 38</i>; Off Nakahise-saki, Amami-Oshima I., 117–123 m depth, 1 ovig.8 (NSMT-Cr 16201; cb 5.0×cl 3.3 mm), by <i>Daiyu Maru No. 38</i>.</p><p><i>Remarks</i>. The specimens from Shin-Kurose and Hyotanse (NSMT-Cr 6665, 6666) were recorded by Ng (2000) as <i>Pilumnus dofleini</i> Balss, 1933, but later described as a new species, <i>P. curvipenis</i>, by Komai and Motoh (2012). One male (NSMT-Cr 6665; cb 11.4×cl 14.2 mm) was selected as the holotype, and two males (cb 8.0×cl 9.5 mm; cb 8.8×cl 10.2 mm) and one ovigerous female (cb 13.4×cl 16.4 mm) in the same lot were designated as the paratypes with new registered number, NSMT-Cr 22177, together with one ovigerous female (NSMT-Cr 6666; cb 12.3×cl 14.8 mm).</p><p>As for the specimens from Amami-Oshima Island, it is noted that Takeda and Komatsu (2005) recorded a male (MSMT-Cr 16204; cl 2.6 mm) as <i>Pilumnus dofleini</i>, and an ovigerous female (NSMT-Cr 16201; cb 5.0×cl 3.3 mm) as <i>Nanopilumnus</i> sp.</p><p>During this study, the type specimens (NSMTCr 6665, 6666, 22177) and additional two females (one ovigerous) (NSMT-Cr 11034, 11052) from submarine banks off the Izu Islands, and one male (NSMT-Cr 16204) and one ovigerous female (NSMT-Cr 16201) from off Amami-Oshima Island, Ryukyu Islands, were re-examined. The armature of the carapace anterolateral margins illustrated by Ng (2000, fig. 1a) and Komai and Motoh (2012, fig. 18A) seem to be somewhat different from each other. In the present specimens (Fig. 4A), the anterolateral teeth are not spinulate, but distinctly toothed, being close to those of the carapace right side in Komai and Motoh`s figure (fig. 18A). The most obvious character of <i>P. curvipenis</i> is the G1 shape as figured by Ng (2000, fig. 2b–e, as <i>P. dofleini</i>) and Komai and Motoh (2012, figs. 13F–I). The distal part of the G1 is short and strongly bent, somewhat similar to that of <i>P. bohol</i> Komai and Motoh, 2012 in which, however, the distal part is shorter and only weakly curved, not vent at all.</p><p>The specimens from off Amami-Oshima Island previously reported as <i>P</i>. <i>dofleini</i> (NSMTCr 16204) and <i>Nanopilumnus</i> sp. (NSMT-Cr 16201) by Takeda and Komatsu (2005) agree well with the type specimens of <i>P. curvipenis</i> from the Izu Islands off the Pacific coast of central Japan, and also with notes on three females from the west of Amami-Oshima Island, 120 m depth, and a male from off Naha, Okinawa-jima Island, Ryukyu Islands, 60–70 m depth, made by Takeda and Komatsu (2020).</p><p><i>Distribution</i>. Known from some submarine banks off the Izu Islands, south of Tokyo, and from off Amami-Oshima Island and Okinawa-jima Island in the Ryukyu Islands; 60–230m depth.</p>
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id zenodo_https___doi_org_10_5281_zenodo_14680431
institution Zenodo
language
publishDate 2024
publisher Zenodo
record_format zenodo
spellingShingle Pilumnus curvipenis Komai and Motoh 2012
Zou, Wenjun
Jiang, Qin
Wang, Yanling
Wei, Wenbin
Sun, Xiaodong
Basu, Karen
Chen, Qiuyu
Kotecha, Aachal
Li, Sijing
Liu, Ruyuan
Patel, Vaibhavi
Chen, Youxin
Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Pilumnidae
Pilumnus
Pilumnus curvipenis
<p><b><i>Pilumnus curvipenis</i> Komai and Motoh, 2012</b></p><p>(Fig. 4A)</p><p><i>Pilumnus dofleini</i> Balss, 1933: Ng, 2000, p. 301, figs. 1–2. — Takeda & Komatsu, 2005, p. 284.</p><p><i>Pilumnus curvipenis</i> Komai & Motoh, 2012, p. 17, figs. 12–13, 18A–B. — Takeda & Komatsu, 2020, p. 111.</p><p><i>Material examined</i>. Takase submarine bank (Fig. 1; 34°28.64′N, 139°12.26′E, 105 m depth), northwest off Nii-jima I., Izu Is., 1 8 (NSMT-Cr 11034; cb 4.7×cl 3.7 mm), 11-IX-1989, dredged by TV <i>Umitaka Maru</i> of Tokyo University of Fisheries (now, Tokyo University of Marine Science and Technology) and donated by T. Okutani; Takase submarine bank (34°26.11′N, 139°09.75′E, 112 m depth), 1 ovig.8 (NSMT-Cr 11052; cb 5.8×cl 3.8 mm), 11-IX-1989, dredged by TV <i>Umitaka Maru</i>.</p><p><i>Comparative material examined</i>. Shin-Kurose submarine bank (Fig. 1; 33°32′N, 140°10′E), southeast off Mikura-jima I., Izu Is., 160–230 m depth, 3 ƏƏ, 1 ovig.8 (NSMT-Cr 6665), 26-XI-1974, T. Okutani leg.; Hyotanse submarine bank (Fig. 1; 34°21′N, 139°02.36′E, 105 m depth), northwest off Kozu-shima I., Izu Is., 1 ovig.8 (NSMT-Cr 6666), 26-VI-1973, T. Okutani leg.</p><p>Off Kasari Bay, Amami-Oshima I., Ryukyu Is., 120–122 m depth, 1 Ə (NSMT-Cr 16204; cb, left branchial region heavily deformed×cl 2.6 mm), dredged by tugboat <i>Daiyu Maru No. 38</i>; Off Nakahise-saki, Amami-Oshima I., 117–123 m depth, 1 ovig.8 (NSMT-Cr 16201; cb 5.0×cl 3.3 mm), by <i>Daiyu Maru No. 38</i>.</p><p><i>Remarks</i>. The specimens from Shin-Kurose and Hyotanse (NSMT-Cr 6665, 6666) were recorded by Ng (2000) as <i>Pilumnus dofleini</i> Balss, 1933, but later described as a new species, <i>P. curvipenis</i>, by Komai and Motoh (2012). One male (NSMT-Cr 6665; cb 11.4×cl 14.2 mm) was selected as the holotype, and two males (cb 8.0×cl 9.5 mm; cb 8.8×cl 10.2 mm) and one ovigerous female (cb 13.4×cl 16.4 mm) in the same lot were designated as the paratypes with new registered number, NSMT-Cr 22177, together with one ovigerous female (NSMT-Cr 6666; cb 12.3×cl 14.8 mm).</p><p>As for the specimens from Amami-Oshima Island, it is noted that Takeda and Komatsu (2005) recorded a male (MSMT-Cr 16204; cl 2.6 mm) as <i>Pilumnus dofleini</i>, and an ovigerous female (NSMT-Cr 16201; cb 5.0×cl 3.3 mm) as <i>Nanopilumnus</i> sp.</p><p>During this study, the type specimens (NSMTCr 6665, 6666, 22177) and additional two females (one ovigerous) (NSMT-Cr 11034, 11052) from submarine banks off the Izu Islands, and one male (NSMT-Cr 16204) and one ovigerous female (NSMT-Cr 16201) from off Amami-Oshima Island, Ryukyu Islands, were re-examined. The armature of the carapace anterolateral margins illustrated by Ng (2000, fig. 1a) and Komai and Motoh (2012, fig. 18A) seem to be somewhat different from each other. In the present specimens (Fig. 4A), the anterolateral teeth are not spinulate, but distinctly toothed, being close to those of the carapace right side in Komai and Motoh`s figure (fig. 18A). The most obvious character of <i>P. curvipenis</i> is the G1 shape as figured by Ng (2000, fig. 2b–e, as <i>P. dofleini</i>) and Komai and Motoh (2012, figs. 13F–I). The distal part of the G1 is short and strongly bent, somewhat similar to that of <i>P. bohol</i> Komai and Motoh, 2012 in which, however, the distal part is shorter and only weakly curved, not vent at all.</p><p>The specimens from off Amami-Oshima Island previously reported as <i>P</i>. <i>dofleini</i> (NSMTCr 16204) and <i>Nanopilumnus</i> sp. (NSMT-Cr 16201) by Takeda and Komatsu (2005) agree well with the type specimens of <i>P. curvipenis</i> from the Izu Islands off the Pacific coast of central Japan, and also with notes on three females from the west of Amami-Oshima Island, 120 m depth, and a male from off Naha, Okinawa-jima Island, Ryukyu Islands, 60–70 m depth, made by Takeda and Komatsu (2020).</p><p><i>Distribution</i>. Known from some submarine banks off the Izu Islands, south of Tokyo, and from off Amami-Oshima Island and Okinawa-jima Island in the Ryukyu Islands; 60–230m depth.</p>
title Pilumnus curvipenis Komai and Motoh 2012
topic Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Pilumnidae
Pilumnus
Pilumnus curvipenis
url https://doi.org/10.5281/zenodo.14680431