taxonID	type	description	language	source
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	(Figs. 2 – 3)	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	materials_examined	Material examined. 1 male (12.9 × 10.9 mm) (NIO 1014 / 23), Krishna-Godavari Basin, western Bay of Bengal, off Machilipatnam, India, ORV Sindhu Sadhana, stn. SP 3, 15 ° 42.93726 ’ N 82 ° 03.82330 ’ E, 1,754.9 m depth, spade corer, 18. III. 2018, coll. M. J. Gonsalves. Description of the present material. Body smooth (Fig. 2); carapace (Figs. 2, 3 A, B) with PCL 1.2 × CW, dorsal surface gently convex transversely. Rostrum triangular, length 0.4 timesPCL, carinatedorsally, feeblyupcurved, lateral margins finely serrated along distal one-third portion. Frontal margin strongly oblique; outer orbital spine represented by angular process. Gastric region dilated, bearing 1 pair of distinct anterior transverse striae. Anterior branchial region bearing short striae, anterolateral spine distinct, followed by few minute teeth. Slightly elevated submarginal ridge followed by gently concave posterior margin. Thoracic sternum (Fig. 3 C) smooth; sternite 3 posteriorly narrowed, anterior margin bearing 2 lobes, anterolateral angle terminating in distinct blunt process on each side. Pleon (Fig. 3 D) smooth; tergites 2, 3 bearing 1 medially interrupted transverse groove each, that on tergite 2 distinct. Telson (Fig. 3 E) comprising 10 plates. Ocular peduncle (Fig. 3 A, B) immovable, cornea ovate. First antennular peduncle article (Fig. 3 F) unarmed on ventrodistal margin with, distolateral spine distinctly larger than distomesial spine. First antennal peduncle article (Fig. 3 F) with distomesial spine reaching distal end of second article, distolateral spine short, not reaching distal end of second article; second article with short distolateral spine not reaching distal end of third article. Maxilliped 3 (Fig. 3 G) ischium half as long as merus, distal angles prominent, crista dentata with 27 denticles; merus f lexor margin with 2 small obsolescent spines, dorsal margin with small distolateral spine. P 1 (Figs. 2, 3 H – K) 1.8 × PCL with long plumose setae. Ischium bearing distomesial spine. Merus with setose striae arranged longitudinally, distoventral and distomesial spines distinct, ventromesial margin bearing 3 spines. Carpus bearing mesial marginal spine at widest distal portion. Palm length 0.7 times finger length, almost as long as broad, mesially with 2 spiniform processes. Fingers distally spooned, occlusal margins crenulate. P 2 (Fig. 3 L) merus with row of 9 small tuberculate spines (distalmost largest) on extensor surface, covered with rows of thick setae (Fig. 3 M); lateral surface and ventral margin each with rows of obsolescent tubercular processes, flexor margin with distinct distal spine. Pereopod (not attached to specimen) (Fig. 3 N) merus 4.7 × as long as wide, bearing dorsal row of 10 small spines, distalmost largest, lateral surface and ventral margin each bearing rows of obsolescent tubercular processes, ventral margin with distinct distal spine. Carpus with dorsal ridge terminating in distodorsal spine, feebly tuberculate low ridge dorsolaterally parallel to dorsal margin. Propodus obliquely f lattish, dorsal margin bearing obsolescent tubercular processes. Dactylus (Fig. 3 O) length 0.7 times propodus length, flexor margin bearing 17 teeth, each accompanied by movable corneous spine; distalmost tooth close to corneous unguis. Epipods absent. Distribution. Hydrothermal vents in the SouthWest Pacific at 1,750 m depth at Lau Basin near Fiji, 2,000 m in the North Fiji Basin (Baba and Saint Laurent, 1992; Thaler et al., 2014), 1,649 m at Brothers Seamount in the Kermadec Arc off New Zealand (Cubelio et al., 2007), 1,300 – 1,900 m at Manus Basin off Papua New Guinea (Thaler et al., 2014), and 2,023 m at Onnuri Vent Field in the Central Indian Ocean (Hwang et al., 2022). Previous reports of M. lauensis from a cold-seep environment were from 1,119 – 1,199 m and 1,750 – 2,000 m at Formosa Ridge off Taiwan (Lin et al., 2013; Dong and Li, 2015; Shen et al., 2016; Yang et al., 2016; Sun et al., 2019). Remarks. The morphology of the single Indian specimen of M. lauensis largely resembled the type specimens, with the exception of the higher number of teeth (27) on the crista dentata of the third maxilliped ischium (vs. 23 – 24 in the type series). Three males reported from the Formosa Ridge (Lin et al., 2013) reportedly possessed a relatively longer P 1 palm (as long as finger), along with distinct spines on the mesial margin of P 1 merus, which are less prominent in the Indian specimen, and absent in the type series. The partial mtDNA COI sequence of the Indian specimen is identical (p-distance, 0.0 %) (Tab. 2) to the previously published sequences originating from the Northwestern Pacific Ocean (KF 774316 (Lin et al., 2013), and MH 717895 (Sun et al., 2019 )) (Fig. 4). The partial 16 S rRNA sequence is nearly identical (p-distance, 1.25 %) to the previously published sequence (MH 717895) from the Formosa Ridge, Taiwan (Sun et al., 2019).	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	Species Distribution range in meters Eastern Pacific (Alaska Bay, off Oregon, Monterey Bay, Baja California, East Pacific Rise and west of Munidopsis albatrossae Pequegnat 1920 – 3680 Costa Rica, Galapagos Islands), Western Pacific (Weijia Guyot and Hawaii) and Bellingshausen Sea and Pequegnat, 1973 (Antarctic waters) (Osawa et al., 2023) New England, Middle Atlantic Bight, Bequia, Colombian Basin, Venezuelan Basin, south of Azores, Munidopsis aries (A. Milne- 2615 – 5320 Iberia abyssal plain, Off Mauritania, Angola, South Africa, Réunion Island (Baba et al., 2008); Central Edwards, 1880) Indian Ridge, South East Indian Ridge, Rodriguez Triple Junction (Gerdes et al., 2021). Munidopsis arietina Alcock and Bay of Bengal, Taiwan (Baba et al., 2008); Great Australian Bight, off the eastern coast of Australia 1836 – 3852 Anderson, 1894 (Farrelly and Ahyong, 2019) Indian Ocean (Mozambique Channel, Southwest Indian Ocean, Bay of Bengal), Western Pacific Munidopsis centrina Alcock and 2300 – 3485 Ocean (south of Tosa Bay, Taiwan, New Caledonia; off the eastern coast of Australia (Baba et al., 2008; Anderson, 1894 Farrelly and Ahyong, 2019) Munidopsis ceratophthalma 677 – 878 Andaman Sea, West of Sumatra (Baba et al., 2008) Alcock, 1901 Munidopsis edwardsii (WoodMason, 1891 in Wood-Mason 1379 – 3065 SW of Sri Lanka, Bay of Bengal, Taiwan, New South Wales (Baba et al., 2008) and Alcock, 1891)	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	Munidopsis lauensis Baba and de 1119 - 2023 Kermadec Arc off New Zealand, Manus Basin off Papua New Guinea), Central Indian Ocean (Onnuri Saint Laurent, 1992 Vent Field) (Baba et al., 2008) (Hwang et al., 2022)	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	Edwards, 1882) Atlantic Ocean (South West Gulf of Mexico, Guadeloupe, Dominica, Bahamas, Brazil, Gulf of Guinea), Indian Ocean (off Madagascar, Mozambique Channel, Gulf of Aden, Bay of Bengal), Western Pacific Ocean (Makassar Strait, off Sulawesi, Moluccas, Philippines, off eastern coast of Australia, off Munidopsis nitida (A. Milne 592 – 3680 Admiralty Islands, off Arou Islands, between Papua and Admiralty Islands, Solomon Islands, New Edwards, 1880) Caledonia, Vanuatu, Taiwan, Izu Shoto (Japan); Eastern Pacific (off Oregon, South Eastern Gulf of California, off Mariato Point, Cocos Island, and Gulf of Panama) (Baba et al., 2008; Farrelly and Ahyong, 2019) Munidopsis pallida Alcock, 1894 2233 – 3299 Off Zanzibar, Bay of Bengal, Andaman Sea, Taiwan (Baba et al., 2008) Atlantic Ocean (West European Basin, from off Ireland to off South Africa) and Indian Ocean	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	Munidopsis platirostris (A. Milne- Florida Strait, Yucatan Strait, northwest Caribbean Sea, Bahamas, Lesser Antilles, Puerto Rico, 101 – 860 Edwards and Bouvier, 1894) Colombia, Venezuela (Baba et al., 2008; Poupin and Corbari, 2016; Williams et al., 2019)	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
4B1A87E17B7DFFEDFEB8F9CAE69EFBF2.taxon	description	Edwards, 1880) Poupin and Corbari 2016) Atlantic Ocean (off Namibia, West of Cape Point), Indian Ocean (Marion Island, Crozets), Western Munidopsis subsquamosa 1789 – 4800 Pacific (off Japan, Queensland and New South Wales,) Eastern Pacific (off Oregon, Panama, Chile) Henderson, 1885 (Baba et al., 2008; Farrelly and Ahyong, 2019) meri and carpi of pereopods. It closely resembles M. ceratophthalma in possessing a narrow triangular rostrum, absence of gastric spines, moderately arched lateral carapace margins, smooth posterior margin of carapace, the presence of spines on the meri and carpi of pereopods, and absence of epipods on all pereopods. However, M. lauensis differs from M. ceratophthalma in having a relatively shorter mesial eye-spine, which is less than half of the rostral length (vs. relatively longer eye-spine, greater than half of the rostral length in M. ceratophthalma). An identification key to the species of the “ orophorhynchus ” group is provided below. Identification key to the species of the “ orophorhynchus ” group of the genus Munidopsis: 1. Epipods absent on chelipeds and pereopods .......................................................................................................... 2 – Epipods present on chelipeds, may be absent on pereopods ......................................................................... 11 2. Rostrum styliform, bearing lateral spines ............................................................................................. M. arietina – Rostrum narrowly to broadly triangular, unarmed laterally ........................................................................... 3 3. Rostrum broadly triangular ........................................................................................................................................ 4 – Rostrum narrowly triangular .................................................................................................................................. 5 4. Carapace uniformly tuberculate. Abdominal somites 2 – 4 each with sharp median tooth ............................ .......................................................................................................................................................................... M. granosa – Carapace sparsely tuberculate. Abdominal somites 2 – 4 unarmed ......................................... M. platirostris 5. Posterior margin of carapace spinose ..................................................................................................... M. sharreri – Posterior margin of carapace smooth .................................................................................................................... 6 6. Carapace broadest anteriorly, lateral margins converging posteriorly ...................................... M. albatrossae – Carapace broadest at midlength, lateral margins moderately arched ............................................................ 7 7. Carapace with gastric spines ....................................................................................................................................... 8 – Carapace without spines on the gastric region ................................................................................................... 9 8. Carapace with 1 pair of gastric spines .......................................................................................................... M. aries – Carapace with 2 transverse rows of gastric spines ........................................................................... M. centrina 9. Surfaces of meri and carpi of chelipeds and pereopods armed with spines or tubercles ............................ 10 – Surfaces of meri and carpi of chelipeds and pereopods unarmed .......................................... M. spinoculata 10. Eye-spine longer than half of rostral length .......................................................................... M. ceratophthalma – Eye-spine shorter than half of rostral length ...................................................................................... M. lauensis 11. Epipods present on chelipeds and first two ambulatory pereopods ................................................................... ...................................................................................................................... M. marionis (A. Milne-Edwards, 1882) – Epipods present on chelipeds only ..................................................................................................................... 12 12. Rostrum broadly triangular ................................................................................................................................... 13 – Rostrum moderately triangular ........................................................................................................................... 16 13. Carapace with 1 pair of gastric spines .......................................................................... M. pallida Alcock, 1894 – Carapace without gastric spines ........................................................................................................................... 14 14. Abdominal somites 2 - 4 each with blunt, low median process ............................. M. parfaiti (Filhol, 1885) – Abdominal somites 2 - 4 unarmed ....................................................................................................................... 15 15. Dorsal surface of carapace nearly smooth. Rostrum constricted between eyes ............................................. .................................................................................................................................................. M. livida (Perrier, 1886) – Dorsal surface of carapace sharply granulated. Rostrum not constricted between eyes ............................. .................................................................................................................... M. squamosa (A. Milne-Edwards, 1880) 16. Carapace with spines on gastric region ................................................................................................................ 17 – Carapace without spines on gastric region ............................................................................................................. .............................................................................. M. edwardsi (Wood-Mason in Wood-Mason & Alcock, 1891) 17. Carapace with 1 pair of spines only on gastric region ........................ M. nitida (A. Milne-Edwards, 1880) – Carapace with spines in addition to 1 pair of spines on gastric region ........................................................ 18 18. P 2 – 4 dactyli nearly straight on flexor margin ................................................................... M. recta Baba, 2005 – P 2 – 4 dactyli considerably curving ............................................................ M. subsquamosa Henderson, 1885	en	Deepak Samuel Jigneshkumar Trivedi, Maria-Judith Gonsalves Shivam Tiwari Vinay P. Padate V. (2025): First record of a cold-seep squat lobster Munidopsis lauensis Baba and de Saint Laurent, 1992 (Anomura: Galatheoidea) from Indian waters. Nauplius (e 20250543) 33: 1-12, DOI: 10.1590/2358-2936e20250543, URL: https://doi.org/10.1590/2358-2936e20250543
