identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
D60B03372D2CFF03FBBFCA53FD6ADB35.text	D60B03372D2CFF03FBBFCA53FD6ADB35.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina SMITH 1884	<div><p>Ethusina Smith, 1884</p> <p>Remarks. – The genus Ethusina Smith, 1884 (type species Ethusina abyssicola Smith, 1884) currently contains 21 recognised species from the Atlantic and Indo-Pacific regions, and is characterised by their relatively small eyes which are immovable in the orbit and the large basal antennular segment. Othewise, they are very close to members of the Ethusa Roux, 1830. Although there had been some early uncertainty with the validity of Ethusina, the above-mentioned characters, however, appear to work (at least for the time being) and we continue to use them to distinguish the two genera.</p> <p>Thirteen Ethusina species are presently known from the Indo-West Pacific, viz., E. bicornuta Chen, 1997, E. brevidentata Chen, 1993, E. challengeri (Miers, 1886), E. desciscens Alcock, 1896, E. dilobotus Chen, 1993, E. gracilipes (Miers, 1886), E. investigatoris Alcock, 1896, E. longipes Chen, 1987, E. microspina Chen, 2000, E. paralongipes Chen, 1993, E. pubescens Chen, 1993, E. robusta (Miers, 1886), and E. vanuatuensis Chen, 2000. The present paper adds six more new species. More than half of the currently recognised Ethusina species have been described only in the last decade or so, testimonial to their diversity in the deep-sea environment. More new species of Ethusina are also present in Australia and will be described in the near future (see Davie, 2002). Despite this, the Ethusinae is in urgent need of a worldwide revision, and there are still a good number of misidentifications and new species to be resolved. Nevertheless, a complete revision of the subfamily Ethusinae which has only three genera but some 62 recognised species and almost 70 available names worldwide, will be a massive task and cannot be finished in the near future. On the basis of the published literature at least, the new taxa described here seem to be distinct and it is on this belief that we formally name them.</p> </div>	https://treatment.plazi.org/id/D60B03372D2CFF03FBBFCA53FD6ADB35	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D2DFF03FC05CDCDFBF7DDDB.text	D60B03372D2DFF03FC05CDCDFBF7DDDB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina dilobotus Chen 1993	<div><p>Ethusina dilobotus Chen, 1993</p> <p>(Fig. 1)</p> <p>Material examined. – 1 male, 8.0 by 8.2 mm (NTOU), Station CD 129, 22 5.89’N, 121 5.21’E, 1271-1275 m, coll. TAIWAN 2001, R. V. “Ocean Researcher 1”, 21 Aug.2001.</p> <p>Remarks. – The present male specimen (especially the pereoipod proportions and form of the G1) agree best with the description and figures of E. dilobotus by Chen (1993: 338, Fig. 17), although it was described (and only known) on the basis of one specimen from New Caledonia. The carapace of the present specimen, however, seems to have the lateral carapace margin less distinctly convex compared to that figured by Chen (1993: Fig. 17a) and the median frontal tooth also appears to be relatively stronger. The significance of these differences is difficult to assess; and will require more material.</p> </div>	https://treatment.plazi.org/id/D60B03372D2DFF03FC05CDCDFBF7DDDB	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D2DFF01FC10CFB7FE5CD9A9.text	D60B03372D2DFF01FC10CFB7FE5CD9A9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina taiwanensis Ng & Ho 2003	<div><p>Ethusina taiwanensis, new species</p> <p>(Figs. 2, 3)</p> <p>Material examined. – Holotype - male, 7.7 by 9.5 mm (NTOU), Station CP 61, 24 o 47.5’N, 122 17.4’E, 1134 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 4 Aug.2000.</p> <p>Paratype – 1 male, 7.7 by 8.7 mm (ZRC), Station CD 129, 22 5.89’N, 121 5.21’E, 1271-1275 m, coll. TAIWAN 2001, R. V. “Ocean Researcher 1”, 21 Aug.2001.</p> <p>Diagnosis. – Carapace longer than broad; dorsal surface gently convex, appearing smooth without magnification, regions not well defined. Front not prominently projecting anteriorly, with 4 teeth; median teeth not reaching tips of lateral teeth, directed obliquely outwards, separated by prominent concavity; lateral teeth directed anteriorly, separated from median teeth by deep concavity. External orbital spine acutely triangular, directed obliquely outwards, tip not or just reaching bases of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin gently concave. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 7.0-7.1 times as long as wide, propodus 5.3-5.4 times as long as wide; dactylus elongate. Male abdomen with segments 3-5 completely fused, only traces of median sutures just visible; segment 6 rectangular, broader than long, lateral margins distinctly convex; telson semicircular, lateral margins gently convex. G1 gently curved, inner subdistal margin with short perpendicular projection.</p> <p>Etymology. – The species is named after the island of Taiwan.</p> <p>Other material – 1 female, 8.8 by 9.5 mm (IOCAS), Station 16, Spratly Islands (Nansha Islands), South China Sea, 1080 m, coll. 21 Apr.1999.</p> <p>Diagnosis. – Carapace longer than broad; dorsal surface gently convex, with scattered low granules visible without magnification, regions not well defined. Front not prominently projecting anteriorly, with 4 teeth; median teeth short, reaching only to about half length of lateral teeth, directed anteriorly, separated by distinct concavity; lateral teeth directed slightly obliquely outwards, separated from median teeth by concavity. External orbital spine very slender, acutely triangular, directed obliquely outwards, tip reaching beyond tips of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin gently concave. Chelipeds subequal; fingers slightly longer than palm; cutting edges cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 9.7 times as long as wide, propodus 7.5 times as long as wide; dactylus very slender, very elongate. Male not known.</p> <p>Remarks. – With regards to the carapace form, the present specimens seem to be close to E. desciscens Alcock, 1896 (type locality Laccadives, Indian Ocean). That species has since been reported from other parts of the Indian Ocean, Philippines, Indonesia, China and Vanuatu (see Chen, 1986a, b, 1987, 1993, 1997, 2000). The two present specimens from Taiwan, however, differ from E. desciscens s. str. in having relatively shorter P2 and P3, the frontal region protrudes anteriorly less prominently, the male telson is semicircular in shape (vs. triangular), the lateral margins of male abdominal segment 6 are prominently convex (vs. gently concave) and the G1 is relatively more slender and gently curved, with a distinct subdistal projection (vs. straighter, stouter and entire) (cf. Alcock, 1896; Alcock &amp; MacGilchrist, 1905: Pl. 72 fig. 2; Chen, 1987: 689, Fig. 7, Pl. 2 fig. F). As such, it seems best to refer these specimens to a new species, here named E. taiwanensis. The carapace features of E. taiwanensis actually agree well with what Chen (1986b: 136, Fig. 15.71 -73) identified as “ E. desciscens ” from China, and they may well be conspecific. In fact, the identity of all the specimens from the Pacific that had been identified as E. desciscens by previous reports should be redetermined; some may well be E. taiwanensis instead.</p> </div>	https://treatment.plazi.org/id/D60B03372D2DFF01FC10CFB7FE5CD9A9	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D2FFF06FEBECA57FB44DD86.text	D60B03372D2FFF06FEBECA57FB44DD86.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina alcocki Ng & Ho 2003	<div><p>Ethusina alcocki, new species</p> <p>(Figs. 4, 5)</p> <p>Ethusina investigatoris – Chen &amp; Xu, 1991: 60, Fig. 9 (not E. investigatoris Alcock, 1896)</p> <p>Material examined. – Holotype - female, 8.2 by 9.8 mm (NTOU), Station CP 32, 22 01.7’N, 120 11.1’E, 910-1129 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 30 Jul.2000.</p> <p>Etymology. – This species is named after A. Alcock, whose contributions to Indian carcinology have not been rivalled.</p> <p>Remarks. – Ethusina alcocki, new species, is rather close to E. investigatoris Alcock, 1896, but three characters argue against its inclusion there. In E. investigatoris, the median frontal teeth are more prominent, with the inner margin more convex, the supraorbital margin is relatively narrower, and the dactylus of the P2 and P3 is about one-third shorter and relatively broader (cf. Alcock, 1896: 295; Alcock &amp; MacGilchrist, 1905: Pl. 72 fig. 3). Chen (1986b: 135, Fig. 14) referred a male specimen from China to E. investigatoris, and this seems to be correct. Chen &amp; Xu (1991: 60, Fig. 9) subsequently reported E. investigatoris from the South China Sea, but the external orbital spine of the male specimen she figured is relatively shorter with the median frontal teeth subequal in length (rather than with the outer tooth longer). Recently, through the courtesy of H.-L. Chen, the first author had an opportuinity to examine a second specimen from the South China Sea which had been identified as “ E. investigatoris ” and is almost identical to that described by Chen &amp; Xu (1991). We have no doubt that this specimen is conspecific with what is here identified as E. alcocki. Unfortunately, the original specimens described in Chen (1986) and Chen &amp; Xu (1991) could not be located for direct comparisons as the IOCAS is currently moving its catalogued collections to a new building and the material is not available for study (H.-L. Chen, pers. comm., September 2002).</p> <p>Alcock (1896: 285) described E. investigatoris from the Laccadive Sea and Bay of Bengal, in the Indian Ocean, noting that the elongated external orbital spine is “needlelike” but “falls considerably short of the tips of the rather long acute frontal spines” (see also Alcock &amp; MacGilchrist, 1905: Pl. 72 fig. 3), and felt that it was very close to E. gracilipes (Miers, 1886). Ethusina alcocki, however, differs from E. gracilipes in having the external orbital spine relatively longer, reaching to the tip of the frontal spines (not falling short of it), and the inner median teeth are also lower and are not spiniform.</p> </div>	https://treatment.plazi.org/id/D60B03372D2FFF06FEBECA57FB44DD86	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D28FF04FC6CCE6AFD52DCB3.text	D60B03372D28FF04FC6CCE6AFD52DCB3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina chenae Ng & Ho 2003	<div><p>Ethusina chenae, new species</p> <p>(Figs. 6, 7)</p> <p>Material examined. – Holotype – female, 11.0 by 10.5 mm (NTOU), Station CP 39, 21 57.5’N, 121 03.2’E, 1316-1317 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 1 Aug.2000.</p> <p>Paratype – 1 female, 8.5 by 8.4 mm (ZRC), with sacculinid, same data as holotype.</p> <p>Diagnosis. – Carapace slightly broader than long; dorsal surface gently convex, with scattered low granules visible without magnification, regions not well defined. Front not prominently projecting anteriorly, with 4 teeth; median teeth lower than lateral ones, directed obliquely outwards, separated by distinct broad concavity; lateral teeth directed anteriorly, separated from median teeth by shallow concavity. External orbital spine acutely triangular, directed anteriorly or almost so, tip reaching level of tips of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin almost straight. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 6.2 times as long as wide, propodus 5.2 times as long as wide; dactylus not very elongate. Male not known.</p> <p>Etymology. – This species is named after Chen Hui-Lian, whose studies have set the stage for the present one.</p> <p>Remarks. – The present new species resembles E. robusta (Miers, 1886) in terms of the shape of the carapace, and to some degree, the form of the frontal teeth. However, the present two female specimens of E. chenae differ from E. robusta in having the median frontal teeth distinctly lower and blunter than the lateral teeth, the external orbital spine is directed only slightly obliquely outwards (vs. at an angle of about 45), the meri of the P2 and P3 are distinctly shorter proportionately, and the dactyli of the P4 and P5 are also prominently shorter proportionately (cf. Miers, 1886: pl. 29 fig. 2, of a female specimen). The figure and description of E. robusta by Miers (1886: 332, pl. 29 fig. 2) differs somewhat from that of the species figured by Chen (1986b, 2000). Chen’s (1986b: 133, figs. 62-66) figure of a female specimen from the East China Sea resembles that of Miers (1886), but the median frontal teeth are distinctly lower and broader, the external orbital teeth are not directed so obliquely outwards, and the dactyli of the P4 and P5 are prominently shorter. In her later study, Chen (2000: 430, Fig. 3) depicted a male which has somewhat straighter lateral carapace margins with more prominent and straighter external orbital teeth, and the dactyli of the P2-P5 are distinctly shorter than those figured by Miers (1886). It seems rather unlikely that there is sexual dimorphism in the proportions of the P2 and P3, and we have some doubts whether Chen’s material is really E. robusta s. str. (type locality Arafura Sea). In any case, it is clear that the present Taiwanese material cannot be referred to the E. robusta of Miers and/or Chen, and should be regarded as undescribed. Clearly a revision of this group of species is warranted.</p> </div>	https://treatment.plazi.org/id/D60B03372D28FF04FC6CCE6AFD52DCB3	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D2AFF08FEBDC931FE47DCA1.text	D60B03372D2AFF08FEBDC931FE47DCA1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina macrospina Ng & Ho 2003	<div><p>Ethusina macrospina, new species</p> <p>(Figs. 8-11)</p> <p>fused; segment 6 subrectangular, broader than long, lateral margins almost straight; telson triangular. G1 broadly Cshaped, distal part conical, G2 opening subterminal.</p> <p>Etymology. – The name alludes to the large external orbital spine of the species. The name is used as a noun in apposition.</p> <p>Remarks. – The present species bears a remarkable resemblance to Ethusa indica Alcock, 1894, in carapace form, but the immovable eye and large basal antennular segment clearly identifies it as a species of Ethusina. The length of the slender external orbital spine, which extends well beyond the tip of the frontal tooth, is diagnostic for this Ethusina species. The length of this tooth is reminescent of those in E. challengeri (Miers, 1886) (34 37’N 140 32’E), E. gracilipes (Miers, 1886) (Philippines, Japan), E. investigatoris Alcock, 1896 (Philippines, China), E. serenei (Sakai, 1983) (South China Sea), E. longipes Chen, 1987 (Madagascar), and E. paralongipes Chen, 1993 (New Caledonia), but in none of these species does the external</p> <p>Material examined. – Holotype – male, 7.2 by 7.3 mm (NTOU), Station CD 135, 22 17.21’N, 120 0.28’E, 961-1112 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 22 Nov.2001.</p> <p>Paratypes – 2 females, 9.4 by 10.7 mm (NTOU), 8.6 by 9.2 mm (ZRC), same data as holotype; 1 female, 9.8 by 10.1 mm (NTOU), Station CD 134, 22 16.56’N, 120 06.11’E, 736-1040 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 22 Nov.2001; 1 male, 6.8 by 7.3 mm (ZRC), Station CD 141, 22 12.04’N, 119 59.96’E, 1110- 985 m, 24 November 2001; 1 female, 10.7 by 11.2 mm (ZRC), Station CP 39, 21 57.5’N, 121 03.2’E, 1316-1317 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 1 Aug.2000.</p> <p>Diagnosis. – Carapace slightly longer than broad; dorsal surface gently convex, appears almost smooth without magnification, regions not well defined. Front not prominently projecting anteriorly, with 4 teeth; median teeth low, reaching only to about half length of relatively short lateral teeth, directed anteriorly, separated by distinct concavity; lateral teeth directed slightly obliquely inwards, separated from median teeth by shallow concavity. External orbital spine very slender, acutely triangular, directed obliquely outwards, tip reaching beyond tips of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin almost straight. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 6.9-7.5 times as long as wide, propodus 5.2-5.7 times as long as wide; dactylus not very elongate. Male abdomen with segments 3-5 completely orbital spine project so far forwards. The P2 and P3 of all these four species, however, are also much longer and more slender than those of E. macrospina, and easily distinguishes the latter, with those of E. challengeri exceptionately long (cf. Miers, 1886). The regions just behind the frontal teeth of E. gracilipes, E. serenei, E. longipes and E. paralongipes appear to be distinctly swollen, but in E. macrospina, this area is not prominently inflated. The median frontal teeth of these four species are also much more well developed, longer and more spiniform than those of E. macrospina (see Miers, 1886; Serène &amp; Lohavanijaya, 1973; Sakai, 1983; Chen, 1987, 1993).</p> <p>The relatively good series of specimens of E. macrospina allow some insight into variation in the species. The proportions of the P2 do vary a bit, but not very substantially (merus and propodus 6.9-7.5 and 5.2-5.7 times as long as wide respectively), and does not affect the comparisons with other taxa. The strength of the external orbital spine varies a bit in strength and orientation. In the holotype male and some paratype females (e.g. 9.8 by 10.1 mm, Station CP 38) (Figs. 8A, B, 9C, 10A, 11A), the external orbital spine is very long and slender, and directed obliquely outwards at an angle of almost 45. In the paratype male and other females, the spine is relatively shorter, and directed more anteriorly (Figs. 8C, 9A, B, D).</p> </div>	https://treatment.plazi.org/id/D60B03372D2AFF08FEBDC931FE47DCA1	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D26FF08FEA5C941FB79D96B.text	D60B03372D26FF08FEA5C941FB79D96B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina insolita Ng & Ho 2003	<div><p>Ethusina insolita, new species</p> <p>(Figs. 12, 13)</p> <p>Material examined. – Holotype – male, 8.8 by 10.4 mm (NTOU), Station CP 53, 24 15.7’N, 122 11.6’E, 2947- 2903 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 3 Aug.2000.</p> <p>Diagnosis. – Carapace longer than broad; dorsal surface gently convex, with scattered low granules visible without magnification, regions not well defined. Front projecting anteriorly, with 4 teeth; median teeth low, rounded, lobiform, separated by shallow, broad concavity; lateral teeth low, directed obliquely outwards, separated from median teeth by shallow concavity. External orbital spine relatively short, triangular, directed anteriorly or almost so, tip not reaching bases of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part convex. Posterior carapace margin gently concave. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 9.6 times as long as wide, propodus 7.7 times as long as wide; dactylus very elongate. Male abdomen with segments 3-5 completely fused, only traces of median sutures visible, segment 5 with prominent tranverse ridge; segment 6 rectangular, broader than long, lateral margins convex; telson triangular, lateral margins almost straight. G1 stout, distal part subtruncate.</p> <p>Etymology. – The name is derived from the Latin for uncertain, alluding to the systematic status of the species.</p> <p>Remarks. – This new species is rather problematic even though it is represented by a good male specimen. With regards to its carapace form and pereiopodal proportions, it is remarkably close to E. dilobotus Chen, 1993. Nevertheless, the external orbital spine of E. insolita, new species, is directed distinctly anteriorly rather than slightly obliquely, the male telson is relatively more elongate, and the G1 is relatively shorter and stouter. These differences by themselves can be regarded as variation, especially since E. dilobotus is known only from the type specimen from New Caledonia. The male abdominal segment five of E. insolita, however, has a prominent transverse ridge that spans much of its width, a feature that is absent on E. dilobotus (cf. Chen, 1993: fig. 19c). This character, together with the other differences observed earlier, strongly suggest that we are dealing with a different species here.</p> </div>	https://treatment.plazi.org/id/D60B03372D26FF08FEA5C941FB79D96B	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	Ng, Peter K. L.;Ho, P. - H.	Ng, Peter K. L., Ho, P. - H. (2003): On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan. Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
D60B03372D26FF0CFC6FCB18FA11DABD.text	D60B03372D26FF0CFC6FCB18FA11DABD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ethusina saltator Ng & Ho 2003	<div><p>Ethusina saltator, new species</p> <p>(Figs. 14, 15)</p> <p>Material examined. – Holotype – male, 5.9 by 6.8 mm (NTOU), Station CD 139, 22º10.73’N, 120º14.1’E, 852- 718 m, coll. TAIWAN 2000, R. V. “Fishery Researcher 1”, 23 Nov.2001.</p> <p>Diagnosis. – Carapace longer than broad; dorsal surface gently convex, appearing almost smooth without magnification, regions poorly defined. Front not prominently projecting anteriorly, with 4 sharp teeth; median teeth short, about half length of lateral teeth, separated by distinct concavity; lateral teeth directed slightly obliquely outwards, separated from median teeth by concavity. External orbital spine acutely triangular, directed obliquely outwards, tip reaching just beyond bases of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin gently concave. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth, outer surface of fingers with low carinae. P2 and P3 smooth, glabrous; P3 longest, merus 10.2 times as long as wide, propodus 8.3 times as long as wide; dactylus very elongate. Male abdomen with segments 3-5 completely fused; segment 6 rectangular, broader than long, lateral margins slightly sinuous; telson almost semicircular. G1 stout, medially twisted, terminal segment vaguely demarcated from subterminal part, tip prominently bifurcated; G2 with distal segment much longer than basal segment.</p> <p>Etymology. – The name is derived from the Latin for dancer, alluding to the long legs of the species. The name is used as a noun in apposition.</p> <p>Remarks. – With regards to the carapace form and long, slender P2 and P3, E. saltator, new species, resembles E. desciscens Alcock, 1896, E. longipes Chen, 1987, E. paralongipes Chen, 1993, E. gracilipes (Miers, 1886) and E. taiwanensis, new species. However, it can immediately be distinguished from these species by its inner median spine being much shorter than the lateral spine. In addition, the G1 of E. saltator is medially twisted, and the tip is prominently clefted medially.</p> <p>ACKNOWLEDGEMENTS</p> <p>The authors are grateful to Chan Tin-Yam of the National Taiwan Ocean University for making available the present specimens for study. The study has been partially supported by a travel grant to the second author from the Raffles Museum and the Marine Education Foundation of the National Museum of Marine Biology and Aquarium. Chen Hui-Lian (IOCAS) kindly referred her specimen of Ethusina to the first author for this study and read through the manuscript. The first author’s visit to Qingdao was sponsored by IOCAS through the kind courtesy of Liu Riu-Yu. The cruise of “ TAIWAN 2000” was supported by the Taiwan Fisheries Research Institute (TFRI), National Science Council, Taiwan, R.O.C. (NSC), Muséum national d’Histoire naturelle, Paris (MNHN) and the IRD (Institut de Recherche pour le Développement, France). The cruise of “ TAIWAN 2001” was supported by the National Museum of Marine Science &amp; Technology (Keelung), NSC, MNHN and IRD. We are also grateful to the incisive but very helpful comments from two anonymous reviewers which have improved the paper substantially. Peter Castro, who is now starting a revision of the Ethusinae, offered many helpful suggestions.</p> <p>LITERATURE CITED</p> <p>Alcock, A., 1896. Materials for a carcinological fauna of India. No. 2. The Brachyura Oxystoma. 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Report on the Brachyura collected by H.M.S. ‘Challenger’ during the years 1873-1876. In: Report on the Scientific Results of the Exploring Voyage of H.M.S. ‘Challenger’, Zoology, Part 49, 17: 1-362, 29 pls.</p> <p>Ng, P. K. L. &amp; J.-F. Huang, 1997. Unrecorded crabs (Crustacea: Decapoda: Brachyura) from Taiwan and Tungsha Islands, with description of a new genus and species of Xanthidae. Zoological Studies, Taipei, 36: 261-276.</p> <p>Ng, P. K. L., C.-H. Wang, P.-H. Ho &amp; H.-T. Shih, 2001. An annotated checklist of brachyuran crabs from Taiwan (Crustacea: Decapoda). National Taiwan Museum Special Publication Series, Taipei, Number 11: 1-86, 8 colour plates.</p> <p>Roux, P., 1828-1930. Crustacés de la Méditerranée et de son littoral. Levrault, Paris, 176 pp. (unnumbered) [1828: pls. 1- 10, 1829: pls. 11-15, 1830: pls. 16-45</p> <p>Sakai, T., 1983. Description of new genera and species of Japanese crabs, together with systematically and biogeographically interesting species (I). 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Raffles Bulletin of Zoology 51 (1): 71-85, DOI: 10.5281/zenodo.4619337
