• Plagusinae Dana, J.D. 1851. On the classification of the Crustacea Grapsoidea. American Journal of Science and Arts 12: 283-290 [288] [spelling corrected to Plagusiinae by Miers, E.J. 1878. Revision of the Plagusiinae. Annals and Magazine of Natural History 5 1: 147–154 (147), Name No. 377 on Official List of Family-Group Names in Zoology].

  Type genus:

   Plagusia Latreille, 1804.

  Secondary source:

   Miers, E.J. 1878. Revision of the Plagusiinae. Annals and Magazine of Natural History 5 1: 147-154.
• Euchirograpsini Števčić, 2005.
• Davusiini Števčić, 2011.

Introduction

The Plagusiidae traditionally has been treated as a subfamily of the Grapsidae, comprising only two genera, Plagusia and Percnon, which seem to be clearly united by the unusual cleft front, fused male abdominal segments 3–5 or 3–6, and third maxilliped with a reduced exopod which lacks a flagellum. To these character states can be added an unusual abdominal press-button locking mechanism with a rim-like sternal tubercle (see Guinot & Bouchard 1998), and the suture between sternites 5/6 having a raised rim adjacent to the press-button. Sternberg & Cumberlidge (1998) conducted an extensive cladistic study of grapsoid crabs, and concluded that Plagusia and Percnon form a distinctive monophyletic clade; they raised the subfamily formally to full family status.

Euchirograpsus and Miersiograpsus are here transferred to the Plagusiidae from Varuninae and Grapsinae respectively. The change for Euchirograpsus was originally suggested by Cuesta & Schubart (1997) based on larval morphology, and later supported by DNA evidence (Schubart et al. 2000). Re-examination of specimens (in conjunction with P.K.L. Ng) has shown that Euchirograpsus and Miersiograpsus both have male abdominal segments 3–6 fused, a character state found only in Plagusiidae. Also there are shallow grooves on the frontal margin that appear to mark incipient antennular clefts. This, along with the larval and DNA evidence, is sufficient reason to recognise this group at family level. However, Euchirograpsus and Miersiograpsus retain a number of what must be considered as plesiomorphic grapsid features, such as the relatively broader front that overhangs the epistome, and the third maxilliped having a normal, long, grapsid-type exopod bearing a well-developed flagellum.

Interestingly, Guinot & Bouchard (1998: 664) also recognised that Euchirograpsus is unusual because of its type of push-button abdominal locking mechanism: '… a specially acute button and a socket posteriorly defined by a strongly calcified border, which suggests that the genus is misplaced in the Varuninae'.

Evidence from DNA (Schubart et al. 2000) and larval studies (J. Cuesta pers. comm.) also suggest that Percnon is significantly different, and perhaps doubtfully placed in the Plagusiidae. This suggestion has subsequently gained traction, and the Percnidae was given separate family status by Števčić, 2005. This is followed here.

Diagnosis

Carapace subcircular to quadrate; surface smooth and glabrous to strongly tuberculate and tomentose. Front of two types: a) narrow, not overhanging epistome although may be armed with projecting spines; divided into three lobes by deeply cleft antennular fossae, such that antennules visible in dorsal view, or b) broader and more grapsid-like, overhanging epistome; shallow grooves marking incipient antennular clefts, but not obvious in dorsal view. Anterolateral margins with one to several teeth or spines behind exorbital angle. Lower border of orbit curved, continued as ridge to meet prominent anterior border of buccal cavern. Antennal flagellum short. Third maxillipeds not completely closing buccal cavern; merus and ischium without an oblique setose crest; exopod slender, with or without flagellum; palp articulating near antero-external angle of merus. Male abdomen entirely covering sternum between last pair of legs; segments 3–6 or 3–5 fused, but sutures may still be evident. Abdominal locking mechanism of press-button type, corneous rim or constricted apex present in Plagusia and Percnon; suture between sternites 5/6 with raised rim adjacent to press-button.

General References

Cuesta, J.A. & Schubart, C.D. 1997. The first zoeal stage of Glyptograpsus impressus, with comments on the subfamilial arrangement of Grapsidae (Crustacea: Brachyura). Cahiers de Biologie Marine 38: 291-299

Guinot, D. & Bouchard, J.-M. 1998. Evolution of the abdominal holding systems of brachyuran crabs (Crustacea, Decapoda, Brachyura). Zoosystematica Rossica 20(4): 613-694

Schubart, C.D., Cuesta, J.A., Diesel, R. & Felder, D.L. 2000. Molecular phylogeny, taxonomy, and evolution of nonmarine lineages within the American grapsoid crabs (Crustacea: Brachyura). Molecular Phylogenetics and Evolution 15(2): 179-190

Sternberg, R. von & Cumberlidge, N. 1998. Taxic relationships within the Grapsidae MacLeay, 1838 (Crustacea: Decapoda: Eubrachyura). Journal of Comparative Biology 3(2): 115-136

Števčić, Z. 2005. The reclassification of Brachyuran Crabs (Crustacea: Decapoda: Brachyura). Natura Croatica 14(1): 1–159

History of changes

• Davusia Guinot, D. 2007. A new genus of the family Plagusiidae Dana, 1851, close to Plagusia Latreille, 1804 (Crustacea, Decapoda, Brachyura). Zootaxa 1498: 27-33.

  Type species:

   Plagusia glabra Dana, 1852 by original designation.

Distribution

States

New South Wales, Queensland

IMCRA

Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39)

History of changes

• Plagusia glabra Dana, J.D. 1852. Crustacea, Part 1. United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842, under the command of Charles Wilkes, U. S. N. 13(1): 1-685 [371 pl. 23 fig. 10a-d].

  Type data:

   Status unknown, (presumed lost), Newscastle, NSW.

Generic Combinations

• Davusia glabra (Dana, 1852). —
  Guinot, D. 2007. A new genus of the family Plagusiidae Dana, 1851, close to Plagusia Latreille, 1804 (Crustacea, Decapoda, Brachyura). Zootaxa 1498: 27-33

Distribution

States

New South Wales, Queensland

Extra Distribution Information

Australian Endemic.

IMCRA

Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39)

Ecological Descriptors

Low intertidal, rocky shore, shallow subtidal.

General References

Davie, P. 1998. Wild Guide to Moreton Bay. Wildlife and habitats of a beautiful Australian coast – Noosa to the Tweed. Brisbane : Queensland Museum xxiv 408 pp. [150] (colour photograph)

History of changes

• Euchirograpsus Milne Edwards, H. 1853. Mémoires sur la famille des Ocypodiens, suite. Annales des Sciences Naturelles, Paris Zoology 3 20: 163-228 pls 6-11 [175] [gender masculine].

  Type species:

   Euchirograpsus liguricus H. Milne Edwards, 1853 by monotypy.

Distribution

States

New South Wales, Northern Territory

Extra Distribution Information

East and west Atlantic Ocean (including western Mediterranean), east Indian and east Pacific Oceans.

IMCRA

Timor Transition (1), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Southeast Shelf Transition (37), Central Eastern Shelf Province (38)

General References

Türkay, M. 1975. Zur Kenntnis der Gattung Euchirograpsus mit Bemerkungen zu Brachygrapsus and Litocheira (Crustacea: Decapoda). Senckenbergiana Biologica 56(1): 103-132 figs 1-32 [104]

History of changes

• Euchirograpsus timorensis Türkay, M. 1975. Zur Kenntnis der Gattung Euchirograpsus mit Bemerkungen zu Brachygrapsus and Litocheira (Crustacea: Decapoda). Senckenbergiana Biologica 56(1): 103-132 figs 1-32 [117 figs 10, 11, 21].

  Type data:

   Holotype BMNH 1911.9.20.7 ♂, Timor Sea, near Darwin, NT.

Distribution

States

Northern Territory

Extra Distribution Information

Known only from type locality.

IMCRA

Timor Transition (1), Northern Shelf Province (25), Northwest Shelf Transition (26)

Ecological Descriptors

Bathyal, benthic, continental slope, oceanic province.

Extra Ecological Information

Depth 277 m.

History of changes

• Guinusia Schubart, C.D. & Cuesta, J.A. 2010. Phylogenetic relationships of the Plagusiidae Dana, 1851 (Brachyura), with description of a new genus and recognition of Percnidae Stevcic, 2005, as an independent family. pp. 279–300 in Ng, P., Castro, P., Davie, P. & Richer de Forges, B. (Eds.). Studies on Brachyura: a Homage to Danièle Guinot. Crustaceana Monographs Leiden, The Netherlands : Brill Vol. 11 366 pp. [285].

  Type species:

   Cancer chabrus Linnaeus, 1758 by original designation.

Distribution

States

New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia

IMCRA

Southeast Transition (11), Lord Howe Province (14), Norfolk Island Province (21), Central Western Shelf Province (29), Southwest Shelf Transition (30), Southwest Shelf Province (31), Spencer Gulf Shelf Province (33), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Tasmanian Shelf Province (36), Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)

History of changes

• Cancer chabrus Linnaeus, C. 1758. Cancer. pp. 625-634 in Linnaeus, C. Systema naturae per regna tria naturae, secundem classes, ordines, genera, species, cum characteribus, differentis, synonymis, locis. Editio decima, reformata. Holmiae : Laurentii Salvii Vol. 1 10 Edn., 824 pp. [628].

  Type data:

   Neotype RMNH D22446 ♀ dry, Cape of Good Hope, South Africa.

  Subsequent designation references:

  Griffin, D.J.G. 1968. The description of a neotype for Cancer chabrus Linnaeus and the status of Plagusia capensis De Haan (Decapoda, Grapsidae). Crustaceana 15(2): 209-213 pl. 1 (Linnaeus' type material now lost).
• Grapsus (Plagusia) capensis De Haan, W. 1835. Crustacea. 1-243 pls A-J, L-Q, 1-55, circ. tab. 2 in Von Siebold, P.F. (ed.). Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui Summum in India Batava Imperium Tenent, Suscepto, Annis 1823–1830 Collegit, Notis, Observationibus et Adumbrationibus Illustravit. Leiden : Lugundi-Batavorum. [published from 1833–1850] [58].

  Type data:

   Lectotype RMNH D22446 ♀ dry, Cape of Good Hope, South Africa.
  Paralectotype(s) RMNH D42275 2♂ 1♀ dry, South Africa, Cape of Good Hope; RMNH D45103 dry mouthparts of RMNH D42275, South Africa, Cape of Good Hope.

  Subsequent designation references:

  Griffin, D.J.G. 1968. The description of a neotype for Cancer chabrus Linnaeus and the status of Plagusia capensis De Haan (Decapoda, Grapsidae). Crustaceana 15(2): 209-213 pl. 1.
• Plagusia tomentosa Milne Edwards, H. 1837. Histoire Naturelle des Crustacés, comprenant l'anatomie, la physiologie et la classification de ces animaux. Paris : Libraire Encyclopedique de Roret Vol. 2 532 pp., Atlas 32 pp., 42 pls. [92].

  Type data:

   Syntype(s) MNHP 5 specimens, Cape of Good Hope and Chile.
• Plagusia spinosa MacLeay, W.S. 1838. On the Brachyurous Decapod Crustacea brought from the Cape by Dr Smith. pp. 53–71 pl. 3 in, Illustrations of the Annulosa of South Africa; being a portion of the objects of natural history collected during an expedition into the interior of South Africa, under the direction of Dr Andrew Smith, in the years 1834, 1835, and 1836; fitted out by "The Cape of Good Hope Association for Exploring Central Africa". London. 75 pp. 4 pls [66].

  Type data:

   Status unknown, whereabouts unknown (lost), South Africa.
• Plagusia gaimardii Milne Edwards, H. 1853. Mémoires sur la famille des Ocypodiens, suite. Annales des Sciences Naturelles, Paris Zoology 3 20: 163-228 pls 6-11 [178].

  Type data:

   Holotype MNHP, Tongatabou.

Taxonomic Decision for Synonymy

• Griffin, D.J.G. 1973. A revision of the two southern temperate shore crabs Leptograpsus variegatus (Fabricius) and Plagusia chabrus (Linnaeus) (Crustacea, Decapoda, Grapsidae). Journal of the Royal Society of New Zealand 3(3): 415-440 15 figs [426]

Generic Combinations

• Guinusia chabrus (Linnaeus, 1758).

Distribution

States

New South Wales, South Australia, Tasmania, Victoria, Western Australia

Extra Distribution Information

Indo-west Pacific Oceans (Southern Hemisphere cool temperate species from South Africa to Chile).

IMCRA

Southeast Transition (11), Lord Howe Province (14), Norfolk Island Province (21), Central Western Shelf Province (29), Southwest Shelf Transition (30), Southwest Shelf Province (31), Spencer Gulf Shelf Province (33), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Tasmanian Shelf Province (36), Southeast Shelf Transition (37), Central Eastern Shelf Province (38)

Ecological Descriptors

Low intertidal, rocky coast.

Extra Ecological Information

On rocky coasts exposed to light to heavy surf, in crevices and pools.

History of changes

• Grapsus (Plagusia) dentipes De Haan, W. 1833. Crustacea. i-xvii, i-xxxi, ix-xvi, 1-243 pls A-J, in Von Siebold, P.F. (ed.). Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui Summum in India Batava Imperium Tenent, Suscepto, Annis 1823–1830 Collegit, Notis, Observationibus et Adumbrationibus Illustravit. Leiden : Lugduni-Batavorum. [published from 1833–1850] [58 pl. 8 fig. 1, pl.D].

  Type data:

   Lectotype RMNH D123 ♂, Japan.
  Paralectotype(s) RMNH D42277 2♂ 1♀ dry, Japan; RMNH D123 ♂, Japan; RMNH D42278 mouthparts dry, Japan.

  Subsequent designation references:

  Yamaguchi, T. & Baba, K. 1993. Crustacean specimens collected in Japan by Ph.F. von Siebold and H. Bürger and held by the National Natuurhistorisch Museum in Leiden and other museums. pp. 145-563 in Yamaguchi, T. (ed.). Ph.F. von Siebold and Natural History of Japan Crustacea. Japan : Shimoda Printing Inc. [491].

Generic Combinations

• Guinusia dentipes (De Haan, 1833).

Distribution

States

Queensland

Extra Distribution Information

Subtropical and tropical west and east Pacific Ocean (north to Japan and south-east to Easter Island).

IMCRA

Lord Howe Province (14), Norfolk Island Province (21), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)

Ecological Descriptors

Low intertidal, rocky shore, shallow subtidal.

General References

Griffin, D.J.G. 1973. A revision of the two southern temperate shore crabs Leptograpsus variegatus (Fabricius) and Plagusia chabrus (Linnaeus) (Crustacea, Decapoda, Grapsidae). Journal of the Royal Society of New Zealand 3(3): 415-440 15 figs [434] (features separating P. dentipes from P. chabrus)

History of changes

• Miersiograpsus Türkay, M. 1978. Zwei neue Grapsiden-Arten aus dem Indopazifik (Euchirograpsus madagascaariensis n. sp. und Miersiograpsus australiensis n. sp.) mit Einführung von Miersiograpsus n. gen. (Crustacea: Decapoda: Grapsidae). Senckenbergiana Biologica 59: 133-141 [137] [gender masculine].

  Type species:

   Brachygrapsus kingsleyi Miers, 1885 by original designation.

Distribution

States

New South Wales

Extra Distribution Information

South Africa.

IMCRA

Southeast Transition (11), Central Eastern Province (12), Tasman Basin Province (13)

History of changes

• Miersiograpsus australiensis Türkay, M. 1978. Zwei neue Grapsiden-Arten aus dem Indopazifik (Euchirograpsus madagascaariensis n. sp. und Miersiograpsus australiensis n. sp.) mit Einführung von Miersiograpsus n. gen. (Crustacea: Decapoda: Grapsidae). Senckenbergiana Biologica 59: 133-141 [138 pl. 4-6].

  Type data:

   Holotype AM P20675 ♂, E of Brush Island, NSW [35°34'S 150°45'E].
  Paratype(s) AM P25298 1♀; AM P26550 1♂.

Distribution

States

New South Wales

Extra Distribution Information

Southeastern Australia, New Caledonia, and New Zealand

IMCRA

Southeast Transition (11), Central Eastern Province (12), Tasman Basin Province (13)

Distribution References

Ecological Descriptors

Bathyal, benthic, continental slope.

Extra Ecological Information

Depth 459–540 m.

General References

Griffin, D.J.G. & Brown, D.E. 1976. Deepwater Decapod Crustacea from Eastern Australia: Brachyuran Crabs. Records of the Australian Museum 30(11): 248-271 figs 1-10 [255] (under the misidentification of Litocheira [= Euchirograpsus] kingsleyi (Miers, 1885))

History of changes

• Plagusia Latreille, P.A. 1804. Tableau méthodique des crustacés. Nouvelle Dictionnaire d'Histoire Naturelle 24: 123-127 [125] [gender feminine].

  Type species:

   Cancer depressus Fabricius, 1775 by monotypy.
• Philyra De Haan, W. 1833. Crustacea. i-xvii, i-xxxi, ix-xvi, 1-243 pls A-J, in Von Siebold, P.F. (ed.). Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui Summum in India Batava Imperium Tenent, Suscepto, Annis 1823–1830 Collegit, Notis, Observationibus et Adumbrationibus Illustravit. Leiden : Lugduni-Batavorum. [published from 1833–1850] [5] [junior homonym of Philyra Leach, 1817; established without included species; gender feminine].

  Type species:

   Cancer depressus Fabricius, 1775 by subsequent monotypy, see De Haan, W. 1835. Crustacea. 1-243 pls A-J, L-Q, 1-55, circ. tab. 2 in Von Siebold, P.F. (ed.). Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui Summum in India Batava Imperium Tenent, Suscepto, Annis 1823–1830 Collegit, Notis, Observationibus et Adumbrationibus Illustravit. Leiden : Lugundi-Batavorum. [published from 1833–1850] [31].

Taxonomic Decision for Synonymy

• Manning, R.B. & Holthuis, L.B. 1981. West African Brachyuran Crabs (Crustacea: Decapoda). Smithsonian Contributions to Zoology No. 306: i-xii, 1-379 figs 1-88, 2 appendices [238]

Distribution

States

New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia

Extra Distribution Information

Worldwide.

IMCRA

Southeast Transition (11), Central Eastern Province (12), Tasman Basin Province (13), Lord Howe Province (14), Timor Province (2), Norfolk Island Province (21), Cocos (Keeling) Island Province (22), Central Western Shelf Transition (28), Central Western Shelf Province (29), Northwest Transition (3), Southwest Shelf Transition (30), Southwest Shelf Province (31), Spencer Gulf Shelf Province (33), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Tasmanian Shelf Province (36), Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northwest Province (4), Northeast Shelf Province (40), Northeast Shelf Transition (41), Central Western Transition (5)

Distribution References

History of changes

• Plagusia speciosa Dana, J.D. 1851. Crustacea Grapsoidea, (Cyclometopa, Edwardsii): Conspectus Crustacearum quae in Orbis Terrarum circumnavigatione, Carolo Wilkes e classe Reipublicae Foederatae Duce, lexit et descriptsit J.D. Dana. Proceedings of the Academy of Natural Sciences, Philadelphia 5: 247-254 [252].

  Type data:

   Syntype(s) ANSP, Waterland Island (as 'Paumotu'), Paumotu Archipelago.

Distribution

States

New South Wales, Queensland

Extra Distribution Information

Tropical east and west Pacific Ocean.

IMCRA

Southeast Shelf Transition (37), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)

Ecological Descriptors

Low intertidal, shallow subtidal.

Extra Ecological Information

May live on floating timber and on ships' hulls.

General References

Calman, W.T. 1908. Notes on some characters of Koonunga and Anaspides. Transactions of the Linnean Society of London 11: 15-16 [42] (distribution and distinguishing features)

History of changes

• Cancer squamosa Herbst, J.F.W. 1790. Versuch einer Naturgeschichte der Krabben und Krebse nebst einer Systematischen Beischreibung ihrer Verschieden Arten. Berlin & Stralsund Vol. 1 Pt 8 pp. 239–274 pls 18–21. [published from 1782–1804] [260 pl. 20 fig. 113].

  Type data:

   Lectotype ZMB Herbst 0498 ♂, East Indies.
  Paralectotype(s) ZMB Herbst 479 ♀, East Indies; ZMB Herbst 0499 ♂, East Indies; ZMB Herbst 2165 ♀, East Indies.

  Subsequent designation references:

  Sakai, K. 1999. J. F. W. Herbst-Collection of decapod Crustacea of the Berlin Zoological Museum, with remarks on certain species. Naturalists, Tokushima Biological Laboratory, Shikoku University 6: 1-45 pls 1-21 [39] (as 'holotype'); Davie, P. 2002. Crustacea: Malacostraca: Eucarida (Part 2): Decapoda—Anomura, Brachyura. In Wells, A. & Houston, W.W.K. (eds) Zoological Catalogue of Australia. Vol. 19.3B. Melbourne : CSIRO Publishing, Australia xiv 641 pp. [441] (Sakai's reference to a holotype is interpreted as inference of a lectotype).
• Plagusia tuberculata Lamarck, J.B.P.A. 1818. Histoire Naturelle des Animaux sans vertèbres, présentant les caractères généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales espèces qui s'y rapportent; précédée d'une Introduction offrant la Détermination des caractères essentiels de l'Animal, sa distinction du végétal et des autres corps naturelles, enfin, l'Exposition des Principes fondamentaux de la Zoologie. Vol. 5. 612 pp. [246] [junior objective synonym of Cancer squamosus Herbst, 1790].

  Type data:

   Neotype ZMB Herbst 0498 ♂ (= lectotype of Cancer squamosus Herbst, 1790), East Indies.

  Subsequent designation references:

  Schubart, C.D. & Ng, P.K.L. 2001. On the identities of the Rafting Crabs Cancer depressus Fabricius, 1775, Cancer squamosus Herbst, 1790, Plagusia immaculata Lamarck, 1818, and Plagusia tuberculata Lamarck, 1818 (Crustacea: Decapoda: Brachyura: Plagusiidae). Raffles Bulletin of Zoology 48(2): 327-336 [334].
• Plagusia orientalis Stimpson, W. 1858. Crustacea Ocypodoidea: Prodromus descriptionis animalium evertebratorum, quae in Expeditione ad Oceanum Pacificum Septentrionalem, a Republica Federata missa, Cadwaladaro Ringgold et Johanne Rodgers Ducibus, observavit et descripsit W. Stimpson. Pars V. Proceedings of the Academy of Natural Sciences, Philadelphia 10: 93-110 [page numbers 39–56 on separate reprint] [103].

  Type data:

   Lectotype USNM 2012 ♂, Hong Kong, China.
  Paralectotype(s) USNM 2012 ♂, Hong Kong, China.

  Subsequent designation references:

  Schubart, C.D. & Ng, P.K.L. 2001. On the identities of the Rafting Crabs Cancer depressus Fabricius, 1775, Cancer squamosus Herbst, 1790, Plagusia immaculata Lamarck, 1818, and Plagusia tuberculata Lamarck, 1818 (Crustacea: Decapoda: Brachyura: Plagusiidae). Raffles Bulletin of Zoology 48(2): 327-336 [332].

Taxonomic Decision for Synonymy

• Ng, P.K.L. 2000. On the identities of the rafting crabs Cancer depressus Fabricius, 1775, Cancer squamosus Herbst, 1790, Plagusia immaculata Lamarck, 1818, and Plagusia tuberculata Lamarck, 1818 (Crustacea: Decapoda: Brachyura: Plagusiidae). Raffles Bulletin of Zoology 48(2): 327-336

Distribution

States

New South Wales, Western Australia

Extra Distribution Information

Indo-Pacific Oceans (Red Sea to Japan, east to Hawai'i, and in the east Pacific from Clipperton Island, southern California, and possibly Chile).

IMCRA

Cocos (Keeling) Island Province (22), Central Western Shelf Transition (28), Central Western Shelf Province (29), Southeast Shelf Transition (37), Central Eastern Shelf Province (38)

Ecological Descriptors

Low intertidal, shallow subtidal.

Extra Ecological Information

Rocky shore, may live on floating timber, and on ships' hulls.

General References

Calman, W.T. 1908. Notes on some characters of Koonunga and Anaspides. Transactions of the Linnean Society of London 11: 15-16 [42] (as Plagusia depressa tuberculata)

History of changes