Porcellanidae
Creators
Description
Key to Indo-West Pacific genera of the Porcellanidae
1. Antennal peduncle with movable (second to fourth) articles freely accessible to orbit .............................. 2
- Antennal peduncle with movable articles excluded from orbit by projection of immovable (first) article meeting anterior margin of carapace ........................................................................................................... 6
2. Chelipeds flattened. Pterygostomian flap entire .......................................................................................... 3
- Chelipeds robust. Posterior part of pterygostomian flap composed of 1 or more pieces separated by mem- branous interspaces from anterior part ............................................................ Pachycheles Stimpson, 1858
3. Rostrum narrow, triangular, with row of spines on each lateral margin. Telson composed of 5 plates ........ ................................................................................................................................ Petrocheles Miers, 1876
- Rostrum broad, unarmed except for sometimes with supraocular spine on each lateral margin. Telson composed of 7 plates ................................................................................................................................... 4
4. Carapace with gastric region strongly elevated. Ambulatory legs subcylindrical......................................... ..................................................................................................................... Neopetrolisthes Miyake, 1937a
- Carapace flattish or somewhat convex on dorsal surface. Ambulatory legs flattish ................................... 5
5. Carapace uneven on dorsal surface. Median lobe of rostrum with pair of lateral elevations........................ ........................................................................................................................... Novorostrum Osawa, 1998a
- Carapace genarally even on dorsal surface. Median lobe of rostrum without lateral elevations .................. .......................................................................................................................... Petrolisthes Stimpson, 1858
6. Carapace broader than long ......................................................................................................................... 7
- Carapace as long as or longer than broad .................................................................................................. 11
7. Ambulatory legs with dactyli each terminating in simple claw (no corneous spines present on flexor mar- gin) .................................................................................................................... Raphidopus Stimpson, 1858
- Ambulatory legs with dactyli each with biunguiculate claw....................................................................... 8
8. Branchial margins of carapace armed with spines, outer orbital angle terminating in small spine............... ................................................................................................... Aliaporcellana Nakasone & Miyake, 1969
- Branchial margins of carapace without spines, outer orbital angle unarmed .............................................. 9
9. Carapace with pair of transverse ridges along cervical regions. Telson composed of 5 plates ..................... ........................................................................................................................ Heteropolyonyx Osawa, 2001
- Carapace with weak or distinct, cervical grooves. Telson composed of 7 plates ...................................... 10
10. Carapace with dorsal regions well defined by grooves; cervical and gastric grooves formed by thinning and gradual decalcification of cuticle ........................................................Eulenaios Ng & Nakasone, 1993
- Carapace with dorsal regions not distinctly defined by grooves .......................... Polyonyx Stimpson, 1858
11. Carapace distinctly elongate. Dactyli of ambulatory legs triunguiculate or quadriunguiculate................ 12
- Carapace not elongate. Dactyli of ambulatory legs each terminating in a single claw ............................. 13
12. Carpi of chelipeds longer than broad. Dactyli of ambulatory legs quadriunguiculate .................................. ............................................................................................................................. Porcellanella White, 1852
- Carpi of chelipeds broader than long. Dactyli of ambulatory legs triunguiculate......................................... .................................................................................................... Pseudoporcellanella Sankarankutty, 1961
13. Carapace strongly areolate on dorsal surface ............................................................................................ 14
- Carapace nearly smooth or striate on dorsal surface ................................................................................. 15
14. Branchial margins of carapace with spines. Chelae flattened ........................... Enosteoides Johnson, 1970
- Branchial margins of carapace without spines. Chelae inflated ..................... Capilliporcellana Haig, 1978
15. Chelipeds subequal, dactyulus of smaller cheliped not twisted .......................... Porcellana Lamarck, 1801
- Chelipeds unequal, dactylus of smaller cheliped usually twisted.............................................................. 16
16. Carapace with dorsal regions clearly defined. Rostrum broadly triangular or rounded in dorsal view, median lobe strongly deflexed ............................................................................... Ancylocheles Haig, 1978
- Carapace with dorsal regions weakly defined. Rostrum horizontal, tridentate or trilobate in dorsal view [except for Pisidia dispar (Stimpson, 1858) with rostrum strongly bent ventrally, broadly rounded in dor- sal view]..................................................................................................................................................... 17
17. Chelae rather flattish, showing pronounced sexual dimorphism in spinulation as well as in degree of dis- tortion of fingers ............................................................................................................ Pisidia Leach, 1820
- Chelae subcylindrical, generally similar in both sexes ...................................... Lissoporcellana Haig, 1978
Notes
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.5281/zenodo.178040 (DOI)
- Journal article: http://publication.plazi.org/id/FFB9EC0FFF8EBF12AC66EE724A039B34 (URL)
- Is source of
- https://biodiversitypmc.sibils.org/collections/plazi/03809477FF8DBF16ACF1EF5F4F99992E (URL)
- https://www.gbif.org/species/119370667 (URL)
- https://www.checklistbank.org/dataset/49325/taxon/03809477FF8DBF16ACF1EF5F4F99992E.taxon (URL)
Biodiversity
- Family
- Porcellanidae
- Kingdom
- Animalia
- Order
- Decapoda
- Phylum
- Arthropoda
- Taxon rank
- family
References
- Stimpson, W. (1858) Prodromus descriptionis animalium evertebratorum, quae in expeditione ad oceanum pacificum septentrionalem, a republica federata missa, Cadwaladaro Ringgold et Johanne Rodgers ducibus, observavit et descripsit. Pars VII. Crustacea Anomura. Proceedings of the Academy of Natural Sciences of Philadelphia, 10, 225 - 252.
- Miers, E. J. (1876). Descriptions of some new species of Crustacea, chiefly from New Zealand. Annual Magazine of Natural History, (4) 17, 218 - 229.
- Miyake, S. (1937 a) A new crab-shaped Anomuran living commensally with a gigantic sea-anemone (Neopetrolisthes ohshimai gen. et sp. nov.). Z oological Magazine, 49, 34 - 36.
- Osawa, M. (1998 a) Novorostrum, new genus (Decapoda: Anomura: Porcellanidae), with descriptions of three related species. Journal of Crustacean Biology, 18, 161 - 176.
- Nakasone, Y. & Miyake, S. (1969) A new porcellanid crab (Anomura: Porcellanidae) from Japan (Aliaporcellana kikuchii gen. et sp. nov.), with description of two species of the new genus. Publications of the Amakusa Marine Biological Laboratory, 2, 17 - 32.
- Osawa, M. (2001) Heteropolyonyx biforma, new genus and new species, from Japan, with a redescription of Polyonyx utinomii (Decapoda: Porcellanidae). Journal of Crustacean Biology, 21, 505 - 520.
- Ng, P. K. L. & Nakasone, Y. (1993) Taxonomy and ecology of the porcellanid crab Polyonyx cometes Walker, 1887 (Crustacea: Decapoda), with a description of a new genus. Journal of Natural History, 27, 1103 - 1117.
- White, A. (1852) Descriptions of some apparently new species of Annulosa (collected by Mr. Macgillivray during the voyage of H. M. S. Rattlesnake). Narrative of the voyage of H. M. S. Rattlesnake during the years 1846 - 1850, 2: 387 - 395, 2 pls. London.
- Sankarankutty, C. (1961) On a new genus of Porcellanidae (Crustacea, Anomura). Journal of Marine Biological Association of India, 3, 92 - 95.
- Johnson, D. S. (1970) The Galatheidea (Crustacea: Decapoda) of Singapore and adjacent waters. Bulletin of the National Museum Singapore, 35, 1 - 44.
- Haig, J. (1978) Contribution toward a revision of the porcellanid genus Porcellana (Crustacea: Decapoda: Anomura). Proceedings of the Biological Society of Washington, 91, 706 - 714.
- Lamarck, J. B. P. A. (1801) Systeme des animaux sans vertebres, ou tableau general des classes, des ordres et des genres de ces animaux; presentant leurs caracteres essentiels et leur distribution, d'apres la consideration de leurs rapports naturels et de leur organisation, et suivant l'arrangement etabli dans les galeries du Museum d'Histoire naturelle, parmi leurs depouilles conservees; precede du discours d'ouverture du cours de zoologie, donne dans le Museum national d'Histoire naturelle l'an 8 de la Republique. Paris, viii + 432 pp.
- Leach, W. E. (1820) Galateadees. Dictionnaire des Sciences Naturelles, 18: 49 - 56. F. G. Levrault, Strasbourg and Le Normant, Paris.