identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03C98939873CFFCB15C67E60B00888EB.text	03C98939873CFFCB15C67E60B00888EB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Munidopsis juxtapallida Komai & Tsuchida & Fujiwara 2025	<div><p>Munidopsis juxtapallida sp. nov.</p><p>[New Japanese name: Shoho-shinkai-koshiori-ebi]</p><p>(Figs. 1–5)</p><p>Type material.  Holotype: JAMSTEC 105596, female (cl 13.3 mm), KM20-10 C, KM-ROV dive #122, Shoho Seamount, Nishi-Shichito Ridge, 32°20.97´N, 138°39.38´E, 1901 m, associated with sunken wood, 26 November 2020, DNA voucher.</p><p>Description. Carapace (Figs. 1A, 2A, B), exclusive of rostrum, 1.2 times longer than broad, moderately arched transversely; anterior and posterior cervical grooves apparent, transverse depression in anterior part of cardiac region. Rostrum narrowly triangular, far exceeding ocular peduncles by more than half length, slightly upturned; dorsal surface nearly smooth, with low but distinct median carina becoming obsolescent at base of rostrum; lateral margins without conspicuous teeth or spines, but with minute denticles of microscopic size; ventral surface flat. Frontal margins strongly oblique, each with small antennal spine lateral to ocular peduncle followed by shallow concavity ending in small anterolateral spine. Gastric region moderately elevated, bearing short, squamiform, setose striae behind pair of small epigastric spines. Anterior branchial regions bearing less prominent ciliated striae, each lateral margin with moderately strong spine (second anterolateral spine), slightly stronger than anterolateral spine, directed anteriorly and followed by 1 much smaller spine and few striae. Posterior branchial regions with tiny spine at anterolateral corner and transversely developed setose rugae, extending to cardiac regions. Shallowly concave posterior margin preceded by prominent, raised, ciliated submarginal rim of nearly uniform width. Lateral plate with oblique rugae, projecting anteriorly in triangular projection terminating in minute spine.</p><p>Thoracic sternum (Figs. 1B, 2D) almost as long as wide, maximum width at sternites 6 and 7. Sternite 3 narrow, 2.0 times wider than long, deeply depressed, anterior margin with shallow V-shaped median notch flanked by 2 small triangular lobes, anterolateral margins somewhat produced laterally. Sternite 4 narrowly extending anteriorly; surface depressed in midline, smooth; greatest width 3.4 that of sternite 3, and twice wider than long; anterolateral margins gently concave; no striae on surface. Sternites 5–7 without striae.</p><p>Pleon (Fig. 1A, B) unarmed. Pleomere 1 tergum slightly punctate. Pleomeres 2 and 3 each with 2 transverse ridges separated by deep transverse groove; each pleuron with depression anteriorly. Pleomere 4 with deep, rather wide transverse groove separating tergum into 2 ridges; pleuron with shallow depression anteriorly. Pleomeres 5 and 6 without distinct ridges or rugae, but with sparse short setae on surface; posterior margin of pleomere 6 trilobate, lateral lobes rounded, slightly exceeding beyond median lobe, median lobe distinctly wider than posterior lobes, posterior margin very slightly convex (Fig. 2D). Telson (Fig. 2D) subtrapezoidal, 1.4 times as wide as long, composed of 10 plates; posterior margins of posterolateral plates gently convex.</p><p>Eyes (Fig. 2A, B, E) moderate in size; well exposed. Cornea ovate, cupped within broad-based, slightly movable ocular peduncle produced into dorsomesial eye spine; eye spine horizontal in lateral view, or directed dorsolaterally at low angle. No other spines on ocular peduncle.</p><p>Antennular peduncle basal article (Fig. 2F) with crested dorsal margin, extended into slender dorsolateral spine; much longer ventrolateral spine located mesially to dorsolateral spine; inflated lateral face with irregular, minute spinules or granules; ventromesial distal margin minutely granulate.</p><p>Antennal peduncle (Fig. 2A, B, E, G) article 1 with ventromesial distal margin produced into acute, triangular process; distolateral margin also with small spine. Article 2 with distolateral spine; distomesial margin produced but unarmed. Article 3 surface rugose; distal margin granulate. Article 4 cup-shaped, with blunt, stout dorsolateral spine; surface weakly rugose.</p><p>Maxilliped 3 (Fig. 2H) basis with 3 corneous-tipped denticles on ventromesial margin, in line with crista dentata on ischium. Ischium bearing crista dentata consisting of finely uniform, evenly spaced corneous spines; produced anteroventral angle blunt. Merus with 3 small spines on lower margin; upper margin broadly arched, with small distal spine. Carpus, propodus, and dactyl folded on merus-ischium and approximately as long as those 2 articles together, dense setation on dorsal surface of each, and distally on flexor surface of propodus and dactylus.</p><p>Epipod present only on pereopod 1 (cheliped).</p><p>Chelipeds (pereopods 1) (Figs. 1A, B, 3A, B) moderately stout, subequal in length, approximately 1.8 length of carapace. Ischium dorsodistal margin produced into small spine; surfaces ornamented with short transverse or squamiform ridges bearing short stiff setae. Merus widened distally, also ornamented with short transverse or squamiform ridges bearing stiff setae on surfaces; dorsal margin with row of 3 small spines; distal margin minutely denticulate, with 1 small spine mesially; ventrolateral distal angle produced, with 1 minute spine. Carpus short, approximately as long as wide, ornamented with squamiform ridges on surfaces (strongest on dorsal surface); dorsodistal margin with 3 tiny spines including 1 at articular knob to palm. Chela 0.8 times as long as carapace; palm 1.2 times as long as wide, parallel-sided, surfaces with scattered tufts of short setae, mesial face with some squamiform ridges; fingers spooned at tips, occlusal margins closely fitting, entirely crenulate; no crest on distolateral margin of fixed finger; dactylus 1.4 times as long as palm.</p><p>Ambulatory legs (pereopods 2–4) (Figs. 1A, B, 3C–F) moderately long, generally similar in structure, armature and setation, corresponding articles of respective legs approximately equal in length except for meri, being successively shorter posteriorly; setation generally sparse, arising from margins of short ridges.</p><p>Pereopod 2 (Fig. 3C, D) not reaching tip of cheliped. Ischium with tiny dorsodistal spine. Merus ornamented with squamiform ridges on surfaces, margins of those ridges sometimes minutely multidenticulate; dorsal margin with row of 7 small spines, including 1 on dorsodistal margin; ventrolateral distal angle with 1 small spine. Carpus short, extensor ridge produced distally into small spine, followed by smaller spines or denticles, distolateral margin with 1 additional spine inferior to base of extensor distal spine; lateral face with faintly tuberculate longitudinal ridge, produced flexor distal margin spinulose. Propodus extensor surface nearly flat, outer and inner margins bluntly ridged, spineless; lateral face with squamiform ridges, flexor distal angle produced into tiny spine; mesial face longitudinally sulcate; ventrolateral distal angle with 1 corneous spinule. Dactylus 0.8 times as long as propodus, slightly curved, terminating in small, curved corneous claw; surfaces with scattered tufts of thin setae, particularly numerous on extensor surface; flexor margin with row of 13 triangular, corneous-tipped teeth, diminishing in size proximally, each bearing slender corneous spinules or spiniform setae.</p><p>Pereopod 3 (Fig. 3E) ischium with dorsodistal denticle. Merus with row of 7 small spines, including 1 on dorsodistal margin; ventrolateral distal angle with 1 tiny spine. Dactylus with row of 14 triangular teeth, each bearing corneous spinule or spiniform setae.</p><p>Pereopod 4 (Fig. 3D) ischium with short transverse ridge on dorsal surface. Merus dorsodistal margin unarmed, dorsal surface without true spines but with denticles formed by edges of squamiform ridges; ventrolateral angle without spine. Dactylus with row of 13 triangular teeth each bearing spiniform setae or corneous spinules, and 1 minute corneous spinule at end of tooth row.</p><p>Pereopod 5 (Fig. 1A, B) moderately short, slender, chelate. Merus outer face rugose, sharply edged ventrolateral margin with 2 blunt denticles. Carpus outer surface with 2 longitudinal ridges. Chela with brush-like setae.</p><p>Uropodal protopod with distinct spine on distomedial lobe. Exopod lateral margin slightly convex, with row of movable spinules extending onto distolateral margin; outer lateral surface with scattered movable spinules. Endopod lateral margin irregularly denticulate, with few movable spinules, distolateral to distal margin with closely spaced, minute spinules; submedian ridge on outer surface with individual or sets of 2 or 3 movable spinules.</p><p>Colouration in life. Body and appendages entirely whitish; cornea light yellow (Fig. 1A, B).</p><p>Distribution. Known only from the type locality on Shoho Seamount, Nishi-Shichito Ridge, at a depth of 1901 m.</p><p>Habitat. The holotype was collected from the same sunken wood piece with specimens of  M. lignicola sp. nov. (Fig. 4).</p><p>Remarks. Morphologically,  Munidopsis juxtapallida sp. nov. closely resembles  M. exuta Macpherson &amp; Segonzac, 2005,  M. geyeri Pequegnat &amp; Pequegnat, 1970,  M. pallida Alcock, 1894, and  M. recta Baba, 2005 .  Munidopsis exuta and  M. geyeri exhibit amphi-Atlantic distributions, at depths of 2860–4237 m and 1700–4151 m, respectively (Gaytán-Caballero et al. 2022).  Munidopsis pallida Alcock, 1894 is known from the Andaman Sea, Bay of Bengal and off Taiwan at depths of 2233–3299 m (Baba 2005).  Munidopsis recta is known from the Gulf of Panama and East Pacific Rise, at depths of 2216–3190 m (Baba 2005; Jones &amp; Macpherson 2007). Shared characters include: rostrum without lateral spines; pleon unarmed; pleomere 6 posterior margin not markedly produced; distomesial eye-spine present and lateral-eye spine absent; cheliped fixed finger without denticulate carina on distolateral part; and epipods present only on cheliped (Baba 2005; Macpherson &amp; Segonzac 2005; Gaytán-Caballero et al. 2022).  Munidopsis juxtapallida sp. nov. differs from the aforementioned four species in the weaker second lateral spine on the anterior branchial margin of the carapace, which is directed anteriorly (Fig. 2A). In contrast, in  M. exuta,  M. geyeri,  M. pallida, and  M. recta, those spines are stronger and directed anterolaterad at the angle of 45° (cf. Baba 2005; Macpherson &amp; Segonzac 2005; Gaytán-Caballero et al. 2022). The new species further differs from  M. pallida in the less prominent striae or rugae on the dorsal surface of the carapace (Fig. 2A versus Baba 2005: fig. 75a, b), the less curved dactyli of the pereopods (Fig. 3D versus Baba 2005: fig. 75h), and the telson divided into 10 plates, rather than 8 plates (Fig. 2D versus Baba 2005: fig. 75d).  Munidopsis juxtapallida sp. nov. is distinguished from  M. exuta further by the presence of well-developed antennal spines on the carapace frontal margins (Fig. 2A), the weaker distolateral spine on antennal peduncle article 2 (Fig. 2E versus Macpherson &amp; Segonzac 2005: fig. 5E), the stouter propodus of pereopod 2 (Fig. 3C versus Macpherson &amp; Segonzac 2005: fig. 5H), and the less clearly defined posterolateral lobes of pleomere 6 (Fig. 2D versus Macpherson &amp; Segonzac 2005: fig. 5C). In  M. exuta, the antennal spines are usually absent (Macpherson &amp; Segonzac 2005: fig. 5A; Gaytán-Caballero et al. 2022: fig. 3A–G). The absence of spines on the extensor surface of the pereopod 2 propodus distinguishes  M. juxtapallida sp. nov. from  M. recta (Fig. versus Baba 2005: fig. 85i).</p><p>The following four species are also similar in some degree to  M. juxtapallida sp. nov.:  M. bracteosa Jones &amp; Macpherson, 2007, known from the East Pacific, near Juan de Fuca Ridge and Monterey Bay, at depths of 2441– 2891 m,  M. producta Baba, 2005, from East Pacific off Costa Rica and the Gulf of Panama, at depths of 3260–3680 m,  M. scotti Jones &amp; Macpherson, 2007, from the Northeast Pacific, on the Juan de Fuca Ridge, at depth of 2715 m, and  M. starmer Baba &amp; de Saint Laurent, 1992, known from the North Fiji Basin hydrothermal vent site, at depths of 2750 m. Nevertheless,  Munidopsis juxtapallida sp. nov. is readily distinguished from  M. producta and  M. scotti by the presence of only one pair of epigastric spines on the carapace gastric region (Fig. 2A) and the absence of spines on the extensor surface of the pereopod 2 propodus (Fig. 3C). In  M. producta and  M. scotti, there are some additional spines on the carapace gastric region (cf. Baba 2005: fig. 81a; Jones &amp; Macpherson 2007: fig.7A, B); the propodus of the pereopod 2 is armed with some spines on the extensor margin (cf. Baba 2005: fig. 81h, I; Jones &amp; Macpherson 2007: fig. 7H).  Munidopsis producta further differs from  M. juxtapallida sp. nov. in the strongly upturned rostrum (Baba 2005: fig. 81b) and the prominent posteromedian lobe of the pleomere 6 (Baba 2005: fig. 81d). In  M. juxtapallida sp. nov., the rostrum is only slightly upcurved (Fig. 2B); there is no median lobe on the posterior margin of the pleomere 6 (Fig. 2D).</p><p>The new species is readily distinguished from  M. bracteosa by the slightly upcurved rostrum (Fig. 2B), the subequal first and second anterolateral spines on the carapace (Fig. 2A), the non-produced posterior margin of pleomere 6 (Fig. 2D), and the nearly straight flexor margin of the dactyli of pereopods 2 and 3 (Fig. 3C–E). In  M. bracteosa, the rostrum is strongly upturned (Jones &amp; Macpherson 2007: fig. 3B); the second anterolateral spine on the carapace is much stronger than the first anterolateral spine (Jones &amp; Macpherson 2007: figs. 2B, 3A); the posterior margin of pleomere 6 is produced as a broad convexity; and the flexor margins of the dactyli of pereopods 2 and 3 are weakly concave (Jones &amp; Macpherson 2007: figs. 3H, I).</p><p>Munidopsis starmer is rather distinctive among the allied relatives in the absence of an epipod on cheliped and the prominent posterolateral lobes on the pleomere 6 (Baba &amp; de Saint Laurent 1992). In the above mentioned species, including the new species, the cheliped has an epipod; the posterolateral margins of the pleomere 6 are not produced (Baba 2005; Macpherson &amp; Segonzac 2005; Jones &amp; Macpherson 2007; this study).</p><p>Munidopsis subsquamosa Henderson, 1885, known widely from the Indo-West Pacific, including off Japan, at depths of 1789–3960 m (Baba 2005), is also morphologically similar to  M. juxtapallida, and needs to be compared with the present new species considering its occurrence in Japanese waters.  Munidopsis juxtapallida sp. nov. is readily distinguished from  M. subsquamosa by the absence of extra spines on the carapace gastric region (versus additional spines are present) (Fig. 2A versus Baba 2005: figs. 88a, b, 89a–d, 90a, b), anteriorly directed first (anterolateral) and second spines on the anterior branchial margin (versus anterolaterally directed) (Fig. 2A versus Baba 2005: figs. 88a, 89a, b, 90a, b), and the nearly straight dactyli of pereopods 2–4 (versus gently arcuate) (Fig. 3C–F versus Baba 2005: figs. 88i, j, 89i, j, 90g –j).</p><p>Etymology. The Latin juxta (near, close) plus  pallida reflects the close morphological similarity of this new species to the one originally described from the Bay of Bengal by Alcock (1894).</p></div>	https://treatment.plazi.org/id/03C98939873CFFCB15C67E60B00888EB	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.		MagnoliaPress via Plazi	Komai, Tomoyuki;Tsuchida, Shinji;Fujiwara, Yoshihiro	Komai, Tomoyuki, Tsuchida, Shinji, Fujiwara, Yoshihiro (2025): Squat lobsters of the genus Munidopsis Whiteaves, 1874 (Decapoda: Anomura: Munidopsidae) from seamounts on the Nishi-Shichito and Mariana ridges, north-west Pacific off Japan, with descriptions of two new species. Zootaxa 5633 (3): 485-512, DOI: 10.11646/zootaxa.5633.3.4, URL: https://doi.org/10.11646/zootaxa.5633.3.4
03C989398733FFD115C67C95B4DD88F3.text	03C989398733FFD115C67C95B4DD88F3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Munidopsis lignicola Komai & Tsuchida & Fujiwara 2025	<div><p>Munidopsis lignicola sp. nov.</p><p>[New Japanese name: Chinboku-shinkai-koshiori-ebi]</p><p>(Figs. 5–9)</p><p>Type material.  All 41 specimens were collected from a single sunken wood piece, picked up by using the manipulator of KM-ROV. Holotype: JAMSTEC 105598, male (cl 9.2 mm), KM20-10 C, KM-ROV, dive #122, Shoho Seamount, Nishi-Shichito Ridge, 32°20.97´N, 138°39.38´E, 1901 m, 26 November 2020.</p><p>Paratypes: JAMSTEC 105590, 1 male (cl 6.8 mm), DNA voucher; JAMSTEC 105591, 1 juvenile (cl 6.0 mm), DNA voucher; JAMSTEC 105592, 1 juvenile (cl 4.7 mm), DNA voucher; JAMSTEC 105595, 1 male (cl 5.3 mm), 3 females (cl 5.6, 6.7, 7.5 mm); JAMSTEC 105597, 1 ovigerous female (cl 7.8 mm), DNA voucher; JAMSTEC 112448, Onboard ID KM#122 -CR-9-2, 6 males (cl 6.9–7.1 mm), 4 females (cl 5.5–6.1 mm) .</p><p>Other material examined.  JAMSTEC 105593, 1 juvenile (cl 3.1 mm);  JAMSTEC 105594, 1 juvenile (cl 2.7 mm);  JAMSTEC 112449, 20 juveniles (cl 2.6–4.9 mm) .</p><p>Description. Carapace (Figs. 5, 6A, B) 1.2 times longer than broad, moderately arched transversely; anterior and posterior cervical grooves apparent, transverse depression in anterior part of cardiac region. Rostrum narrowly triangular, far exceeding ocular peduncles by more than half length, nearly straight; dorsal surface nearly smooth, with low but distinct median carina becoming obsolescent at base of rostrum; lateral margins without conspicuous teeth or spines, but with minute denticles of microscopic size in distal 0.3; ventral surface flat. Frontal margins strongly oblique, each with moderately small antennal spine lateral to base of ocular peduncle, followed by concavity ending in small anterolateral spine. Gastric region moderately elevated, bearing 3–5 transverse ridges medially and few arcuate ridges laterally behind pair of small epigastric spines. Anterior branchial regions bearing few, less prominent, short transverse ridges, each lateral margin with moderately strong anterior spine (stronger than anterolateral spine) followed by 1 much smaller spine and 1 or 2 granules. Posterior branchial regions with tiny spine at anterolateral corner and transverse, setose striae, extending to cardiac regions. Shallowly concave posterior margin preceded by prominent, raised, ciliated submarginal rim of nearly uniform width. Lateral plate with oblique striae, projecting anteriorly in triangular projection terminating in tiny spine.</p><p>Thoracic sternum (Fig. 6D) slightly longer than wide, maximum width at sternites 6 and 7. Sternite 3 narrow, 2.2 times wider than long, deeply depressed medially, anterior margin with shallow V-shaped median notch flanked by 2 small triangular lobes, anterolateral margins somewhat produced laterally. Sternite 4 narrowly extending anteriorly; surface depressed in midline, smooth; greatest width 3.0 times that of sternite 3, twice wider than long; anterolateral margins gently concave; no striae on surface. Sternites 5–7 without striae.</p><p>Pleon (Figs. 5, 6A) unarmed. Pleomere 1 tergum slightly smooth. Pleomeres 2 and 3 each with 2 transverse ridges separated by deep transverse groove; each pleuron with depression anteriorly. Pleomere 4 with deep, rather wide transverse groove separating tergum into 2 ridges; pleuron with shallow depression anteriorly. Pleomeres 5 with shallow, obliquely transverse groove on posterior part, medially interrupted. Pleomere 6 with shallow groove delimiting posteromedian lobe; posterior margin slightly trilobate, lateral lobes rounded, slightly exceeding beyond median lobe, median lobe distinctly wider than posterior lobes, posterior margin very slightly convex. Telson (Fig. 6E) subtrapezoidal, 1.3 times as wide as long, composed of 10 plates; lateral margin nearly straight, without dense setae even in males; posterior margins of posterolateral plates gently convex.</p><p>Eyes (Fig. 6F) moderate in size; well exposed. Cornea ovate, cupped within broad-based, width distinctly narrower than rostrum at midlength; fixed ocular peduncle produced into prominent dorsomesial eye-spine; dorsomesial eye-spine horizontal in lateral view, or slightly directed laterally in dorsal view; lateral eye-spine much smaller than dorsomesial eye-spine, located at lateral base of cornea, directed anterolaterally at low angle. No other spines on ocular peduncle.</p><p>Antennular peduncle basal article (Fig. 6G) with crested dorsal margin, extended into slender dorsolateral spine; slightly longer ventrolateral spine located slightly mesially to dorsolateral spine; inflated lateral face with irregular, minute spinules or granules; ventromesial distal margin minutely granulate.</p><p>Antennal peduncle (Fig. 6A, F, H) article 1 with ventromesial distal margin produced into acute, triangular process, distolateral margin also with small spine. Article 2 with strong distolateral spine; distomesial margin produced, with small spine. Article 3 surface smooth; distolateral and distomesial margins each with 1 small spine. Article 4 cup-shaped, with acute, stout dorsolateral tooth; surface almost smooth.</p><p>Maxilliped 3 (Fig. 7A) basis with 5–7 corneous-tipped denticles on ventromesial margin, in line with crista dentata on ischium. Ischium bearing crista dentata consisting of finely uniform, evenly spaced corneous spines; weakly produced distoventral angle blunt; ventral margin sharply carinate. Merus (Fig. 3A) with 4 small spines on lower margin; upper margin broadly arched, with small distal spine. Carpus, propodus, and dactyl folded on merus-ischium, approximately as long as those 2 articles together; dense setation on dorsal surface of each, distally on flexor surface of propodus and dactylus.</p><p>Chelipeds (pereopods 1) (Figs. 5, 7B–D) short, stout, subequal in length, approximately 1.4 length of carapace, excluding rostrum. Ischium dorsodistal margin with small spine followed by few minute denticles; surfaces almost smooth. Merus widened distally, ornamented with rather obsolescent, short transverse ridges and sparse setae on surfaces; dorsal margin with row of 5 small spines, including dorsodistal spine; distal margin with 1 small spine adjacent to distomesial lobe angle; ventrolateral distal angle produced into spine; ventromesial distal angle also with spine. Carpus short, approximately as long as wide, surfaces almost smooth, with sparse setae; dorsodistal margin with 3 small spines including 1 on articular knob to palm. Chela 0.5 times as long as carapace; palm 1.1 times as long as wide, parallel-sided, surfaces with scattered tufts of short to long setae; fingers deeply spooned, occlusal margins closely fitting on dorsal side, leaving deep concavity on ventral side, crenulate on entire dorsal side to distal half of ventral side; distolateral margin of fixed finger produced into tuberculate crest; dactylus subequal in length to palm.</p><p>Ambulatory legs (pereopods 2–4) (Figs. 5, 8A–D) moderately long, generally similar in structure, armature and setation, corresponding articles of respective legs approximately equal in length except for meri which successively shorter posteriorly. Setation generally sparse, arising from margins of short ridges.</p><p>Pereopod 2 (Fig. 8A, B) overreaching tip of cheliped by length of dactylus. Ischium without spine or spinule on dorsal surface. Merus ornamented with short transverse ridges on surfaces, margins of those ridges sometimes minutely multidenticulate or spinulose; dorsal margin with row of 7 or 8 small spines increasing in size distally, including 1 on dorsodistal margin; ventrolateral distal angle with 1 small spine. Carpus short, extensor ridge produced distally into small spine, followed by 2 smaller spines, distolateral margin with 1 small additional spine inferior to base of extensor distal spine; lateral face with distinct longitudinal ridge, produced flexor distal margin spinulose. Propodus extensor surface nearly flat, with sparse long setae, outer and inner margins bluntly ridged; lateral face nearly smooth, flexor distal margin with pair of slender movable spines flanking base of dactylus; mesial face nearly flat. Dactylus 0.7 times as long as propodus, nearly straight, terminating in small, curved corneous claw; surfaces with scattered tufts of thin setae; flexor margin with row of 9 or 10 triangular teeth, diminishing in size and becoming obtuse proximally, each bearing slender corneous spinules or spiniform setae also diminishing in size proximally.</p><p>Pereopod 3 (Fig. 8C) merus with row of 6 or 7 small spines, including 1 on dorsodistal margin; ventrolateral distal angle with 1 tiny spine. Dactylus with row of 10 or 11 triangular teeth, each bearing spiniform seta or corneous spinule.</p><p>Pereopod 4 (Fig. 8D) merus dorsodistal margin with small spine, dorsal surface unarmed; ventrolateral angle without spines. Dactylus with row of 9 or 10 triangular teeth each bearing spiniform setae or corneous spinules, and 1 minute corneous spinule proximal to end of tooth row.</p><p>Pereopod 5 chelate. Merus outer face rugose, sharply edged ventrolateral margin with few blunt denticle. Carpus outer surface with 2 longitudinal ridges. Chela with brush-like setae.</p><p>Epipod present only on pereopod 1 (cheliped).</p><p>Male pleopods 1 and 2 modified into gonopods.</p><p>Uropod (Fig.6E) with protopod bearing small spine on distomedial lobe. Exopod lateral margin slightly convex, with row of movable spinules extending onto distolateral margin; outer lateral surface with movable spinules arranged in 2 longitudinal rows. Endopod lateral margin irregularly denticulate, with few movable spinules, distolateral to distal margin with closely spaced, minute spinules; submedian ridge on outer surface with individual or sets of 2 or 3 movable spinules.</p><p>Colouration in life. Body and appendages whitish; corneas light yellow (Fig. 9).</p><p>Size. Largest male cl 9.2 mm; largest female (ovigerous) cl 7.8 mm.</p><p>Distribution. Known only from Shoho Seamount, Nishi-Shichito Ridge, at a depth of 1901 m.</p><p>Habitat. All the specimens inhabited a piece of sunken wood (Fig. 9).</p><p>Remarks.  Munidopsis lignicola sp. nov. is morphologically closest to  Munidopsis nitida (A. Milne-Edwards, 1880), recorded widely in the Indo-Pacific and western Atlantic oceans (Baba 2005; Osawa et al. 2008, 2013; Baba et al. 2009; Taylor et al. 2010; Macpherson et al. 2017, 2020), in having a relatively narrow rostrum, parallel carapace lateral margins bearing 2–4 small spines on each anterior branchial margin, a pair of conspicuous epigastric spines on the carapace, mesial and lateral eye-spines on the ocular peduncle, unarmed pleomeres 2–4, pereopod 1 (cheliped) being shorter than pereopod 2, a denticulated ridge on the distolateral margin of the cheliped fixed finger, unarmed propodi of pereopods 2–5, and an epipod present on pereopod 1 (cf. Baba 2005). The two species differ in the following particulars: the cornea is relatively smaller in  M. lignicola sp. nov. than  M. nitida (Fig. 6A, F versus Baba 2005: fig. 72a–e); the ocular peduncle is armed with a lateral eye spine in  M. lignicola sp. nov. (Fig. 6F), whereas such a spine is absent in  M. nitida (cf. Dong et al. 2019). Furthermore,  Munidopsis nitida attains a much larger size as an adult than  M. lignicola sp. nov. (maximal cl 24.0 mm in  M. nitida versus 9.2 mm in  M. lignicola sp. nov.) (Baba 2005).</p><p>Munidopsis lignaria Williams &amp; Baba, 1989,  M. pycnopoda Baba, 2005, and  M. giribeti Rodriguez-Flores, 2025, are also similar to this new species;  M. lignaria was also compared with  M. nitida in the original description (Williams &amp; Baba 1989). Differentiating characters between  M. lignicola and the latter three species are as follows: the lateral margins of the carapace are parallel in the new species (Fig. 6A), rather than narrowing anteriorly in  M. lignaria and  M. pycnopoda (cf. Williams &amp; Baba 1989: fig. 4a; Baba 2005: fig. 84a); the telson has 10 plates in  M. lignicola sp. nov. (Fig. 6E), eight plates instead in  M. lignaria (cf. Williams &amp; Baba 1989: fig. 2f); the propodi of the pereopods 2 and 3 are unarmed in  M. lignicola sp. nov. (Fig. 8A), whereas armed with two or three spines on extensor margin in  M. lignaria (cf. Williams &amp; Baba 1989: fig. 4h),  M. pycnopoda (cf. Baba 2005: fig. 84a) and  M. giribeti (cf. Rodríguez-Flores 2025: Fig. 10D);  Munidopsis giribeti is characteristic in having more salient spines on the carapace and pereopods 2–4 meri and carpi (cf. Rodríguez-Flores 2025: Figs. 9A–D, 10D) compared to the other related species.</p><p>Dong et al. (2019) compared their new species,  M. spinifrons, with  M. nitida .  Munidopsis lignicola sp. nov. is readily distinguished from  M. spinifrons by the lack of small spines on the rostral lateral margins (Fig. 6A versus Fig. 11A), much weaker spines on the carapace lateral margins (Fig. 6A versus Fig. 10), the absence of a spine on the ventromesial margin of the cheliped merus (Fig. 7C versus Fig. 11G), and less developed spines on upper margins of pereopods 2 and 3 meri and carpi (Fig. 8A, C versus Fig. 11J). Furthermore,  M. lignicola sp. nov. attains a much smaller size than  M. spinifrons (maximal carapace length 9.2 mm versus 24.9 mm)</p><p>All 41 specimens of  M. lignicola sp. n ov. inhabited on a single piece of sunken wood. These specimens varied in size and included multiple generations, from juveniles to spawning individuals. The chelae of  M. lignicola sp. nov. are similar to those of  M. nitida and  M. lignaria, in having close fitting, crenulate distal edges on the tips of the spooned fingers, and a serrate distolateral angle on the fixed finger. The latter two species are known to be associated with sunken wood (Williams &amp; Turner 1986; Williams &amp; Baba 1989), as in the present new species. Williams &amp; Baba (1989) noted that the chelae of  M. lignaria and  M. nitida could be used for boring, tunneling in, or shredding wood, and the same can be said for this new species. Other congeneric species associated with sunken wood include  M. andamanica MacGilchrist, 1905,  M. bispinoculata Baba, 1988,  M. hendersoniana Faxon, 1893,  M. pilosa Henderson 1885,  M. subchelata Balss, 1913, and  M. vicina Faxon, 1893 (Wolff 1979; Baba et al. 2009). Among these,  M. andamanica,  M. bispinoculata,  M. lignaria,  M. nitida, and  M. pilosa have been documented as xylophagous (Van Dover 1988; Hoyoux et al. 2009, 2012). It is probable that  M. lignicola sp. nov. is also xylophagous.</p><p>Etymology. Derived from the Latin lignum (= wood) and colo (= to inhabit), in reference to the habitat of the species.</p></div>	https://treatment.plazi.org/id/03C989398733FFD115C67C95B4DD88F3	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.		MagnoliaPress via Plazi	Komai, Tomoyuki;Tsuchida, Shinji;Fujiwara, Yoshihiro	Komai, Tomoyuki, Tsuchida, Shinji, Fujiwara, Yoshihiro (2025): Squat lobsters of the genus Munidopsis Whiteaves, 1874 (Decapoda: Anomura: Munidopsidae) from seamounts on the Nishi-Shichito and Mariana ridges, north-west Pacific off Japan, with descriptions of two new species. Zootaxa 5633 (3): 485-512, DOI: 10.11646/zootaxa.5633.3.4, URL: https://doi.org/10.11646/zootaxa.5633.3.4
03C989398729FFD415C67CA7B71E8CA7.text	03C989398729FFD415C67CA7B71E8CA7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Munidopsis spinifrons Dong, Xu, Li & Wang 2019	<div><p>Munidopsis spinifrons Dong, Xu, Li &amp; Wang, 2019</p><p>[New Japanese name: Kaizan-shinkai-koshiori-ebi]</p><p>(Figs. 9–11)</p><p>Munidopsis spinifrons Dong, Xu, Li &amp; Wang, 2019: 7, figs. 3B, 4, 5. –– Rodriguez-Flores et al. 2023:</p><p>Material examined.   JAMSTEC 106693, 1 female (cl 29.0 mm), KM20-10 C, KM-ROV dive #131, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=142.077&amp;materialsCitation.latitude=21.714" title="Search Plazi for locations around (long 142.077/lat 21.714)">Ritto Seamount</a>, West Mariana Ridge, 21°42.84´N, 142°04.62´E, 2054 m, 6 December 2020, suction sampler, DNA voucher  .</p><p>Abbreviated description. Carapace (Fig. 10, 11A) 1.2 times longer than broad; frontal margins oblique, with upturned antennal spines; lateral margins nearly parallel; anterolateral spines relatively short; anterior branchial margins each with 4 spines diminishing in size posteriorly, anteriormost spine strongest, directed anterolaterally; posterior branchial margin rugose, with distinct spine at base of posterior cervical groove; posterior margin unarmed; dorsal surface covered with transverse, interrupted ridges, bearing sparse long setae; gastric region elevated, with 2 strong epigastric spines; cervical groove distinct; cardiac region with distinct transverse uninterrupted ridge. Rostrum slender, 0.4 times as long as carapace, strongly upturned in distal 0.3; dorsal surface bluntly carinate; ventrolateral margins each with 2 unpaired spinules; pterygostomial flap with oblique rugae on surface.</p><p>Thoracic sternite 3 broader than anterior margin of sternite 4, divided into 2 parts by median longitudinal groove; sternite 4 narrowly elongated with longitudinal groove in anterior part; posterior part broad, surface with short scales (Fig. 11B).</p><p>Pleon tergites (Fig. 10) smooth and unarmed; tergites 2–4 each with 2 transverse ridges; tergite 6 posterior margin slightly tri-lobate, median lobe not produced beyond lateral lobes. Telson (Fig. 11C) 1.4 times wider than long, composed of 10 distinct plates.</p><p>Ocular peduncle (Fig. 11A) slightly movable, cornea small; mesial eye-spine prominent, anterolaterally directed, reaching to midlength of rostrum; lateral eye-spine small, adjacent to cornea, followed by minute spine at base of ocular peduncle.</p><p>Antennular peduncle basal article (Fig. 11D) longer than broad, distal margin bearing strong ventrolateral spine and dorsolateral spine; lateral face slightly inflated, covered with short rugae.</p><p>Antennal peduncle (Fig. 11A) reaching to mid-length of rostrum; article 1 with strong distomesial and distolateral spines; article 2 armed with strong distolateral spine and small mesial spine at midlength; article 3 subrectangular, with strong distomesial and distolateral spines, with minute dorsodistal spine; article 4 unarmed.</p><p>Maxilliped 3 merus (Fig. 11E) subrectangular, extensor margin with distinct distal spine followed by small tubercle; flexor margin irregularly denticulate.</p><p>Chelipeds (Figs. 10, 11F–H) subequal, longer than carapace; ischium distal margin bearing distinct dorsolateral spine and small ventrolateral spine, ventrodistal margin anteriorly produced, with small subterminal spine; merus with short rugae on surfaces, dorsal surface armed with longitudinal row of spines (strongest on distal margin, dorsodistal margin with strong spine mesially, ventrodistal margin with strong mesial and lateral spines; carpus less than half-length of merus, mesial margin with strong subdistal spine and small median spine, dorsolateral margin with strong distal spine, ventrodistal margin produced into triangular lobe; chela 1.3 times as long as merus, twice as longer as broad; palm unarmed; fingers distally spooned and crenulated; occlusal margins sinuous, with low, triangular tooth proximally on fixed finger, and broad, low tooth medially on dactylus; distolateral margin of fixed finger with indistinct denticulate carina.</p><p>Pereopods 2–4 (Figs. 10, 11J, K) sparsely setose, generally similar in setation and ornamentation. Pereopod 2 overreaching distal end of cheliped; merus dorsal margin armed with row of spines (distalmost spine prominent), lateral surface with short, sometimes scale-like ridges, ventral margin rugose, with strong distolateral spine; carpus with 4 prominent spines on extensor margin; propodus extensor surface bicarinate, flexor margin rugose, with pair of distal corneous spines; dactylus length approximately half-length of propodus, flexor margin straight, with 11 triangular teeth, becoming obtuse proximally, each with slender spiniform setae diminishing in length proximally. Pereopods 3 and 4 meri shorter than pereopod 2 merus, while carpus to dactylus combined lengths subequal to that of pereopod 2; pereopod 4 merus with row of small spines on dorsal margin; dactyli similar to that of pereopod 3, each with 11 triangular teeth, becoming obtuse proximally.</p><p>Epipod present only on pereopod 1.</p><p>Colouration in life. Body and appendages white; cornea of eye orange-yellow (Fig. 10).</p><p>Distribution. Previously known only from the type locality, Weijia Guyot, North-West Pacific, 1427.5 m deep (Dong et al. 2019). Our specimen represents the second record of  M. spinifrons, slightly extending horizontal and bathymetric ranges.</p><p>Habitat. The present specimen was collected from a rock bottom (Fig. 12).</p><p>Remarks. The present specimen aligns well with the original description of  Munidopsis spinifrons provided by Dong et al. (2019) in all diagnostic aspects. Dong et al. (2019) discussed the differentiating characteristics between  M. spinifrons and the closely related  M. nitida . Furthermore, the authors indicated that  M. spinifrons did not show genetic distinction from  M. vrienhoeki based on COI gene sequences, despite the two taxa exhibiting distinct morphological differences. We are in agreement with Dong et al. (2019) regarding the status of  M. spinifrons based on our own observations.</p><p>This study raises the number of species of  Munidopsis to be recorded from waters around Japan and its EEZ to 28 (cf. Komai 2011; Komai et al. 2017; Sato &amp; Aiba 2022).</p></div>	https://treatment.plazi.org/id/03C989398729FFD415C67CA7B71E8CA7	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.		MagnoliaPress via Plazi	Komai, Tomoyuki;Tsuchida, Shinji;Fujiwara, Yoshihiro	Komai, Tomoyuki, Tsuchida, Shinji, Fujiwara, Yoshihiro (2025): Squat lobsters of the genus Munidopsis Whiteaves, 1874 (Decapoda: Anomura: Munidopsidae) from seamounts on the Nishi-Shichito and Mariana ridges, north-west Pacific off Japan, with descriptions of two new species. Zootaxa 5633 (3): 485-512, DOI: 10.11646/zootaxa.5633.3.4, URL: https://doi.org/10.11646/zootaxa.5633.3.4
