A New Species of Riverine Crab of the Genus Sundathelphusa Bott, 1969 (Crustacea: Brachyura: Gecarcinucidae) from Northeastern Luzon, Philippines
Jose Christopher E. Mendoza1, * and Tohru Naruse2
1Department of Biological Sciences, National University of Singapore,
14 Science Drive 4, 117543 Singapore
2Raffles Museum of Biodiversity Research, Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, 117543 Singapore
Present Address: Transdisciplinary Research Organization for Subtropical and Island Studies, University of the Ryukyus, 870 Uehara, Taketomi, Okinawa 907-1541, Japan
corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it. / This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
A new species of riverine freshwater crab of the genus Sundathelphusa Bott, 1969, is described from Cagayan Province in northeastern Luzon Island, the Philippines. Sundathelphusa cagayana, a new species, is most similar morphologically to other Philippine species with a subquadrate carapace such as S. antipoloensis (Rathbun, 1904), S. grapsoides (H. Milne Edwards, 1853) and S. wolterecki (Balss, 1937) but differs from each by characters of the carapace, epibranchial teeth, ambulatory legs, male abdomen, and gonopods. This discovery brings to 22 the total number of species of Sundathelphusa found in the Philippines. A list of the Sundathelphusa species presently known from the Philippines and their known localities is also provided.
INTRODUCTION
The Philippines has a wide diversity of true freshwater crabs belonging to the families Potamidae and Gecarcinucidae (Takeda 1983; Ng 1991; Ng & Takeda 1992, 1993a, b; Ng & Sket 1996; Takeda & Ng 2001; Freitag & Yeo 2004; Tan & Ng 2004; Husana et al. 2009). Although a considerable number of new genera and species have been discovered from the Philippines over the last several years, many more still remain to be described (Chia & Ng 2006). It is estimated that the number of species of freshwater crabs will double from present levels (1,280 species worldwide) once ongoing studies, in the region and elsewhere, have been completed (Cumberlidge et al. 2009). . . . .
REFERENCES
ALCOCK A. 1910. Brachyura I. Fasc. II The Indian Freshwater Crabs—Potamonidae. Catalogue of the Indian Decapod Crustacea in the collection of the Indian Museum. Calcutta, p. 1-135, pls. 1-14.
BALSS H. 1937. Potamoniden (Dekapoda Brachyura) der Philippinen und des Malayischen Archipels. Internat Rev Hydrobiol Hydrogr 34: 143-197.
BOTT R. 1968. Parathelphusiden aus Hinterindien (Crustacea, Decapoda, Parathelphusidae). Senckenbergiana Biol 49(5): 403-422.
BOTT R. 1969. Flüsskrabben aus Asien und ihre Klassifikation (Crustacea, Decapoda). Senckenbergiana Biol 50: 359-366.
BOTT R. 1970. Die Süsswasserkrabben von Europa, Asien, Australien und ihre Stammesgeschichte. Eine Revision der Potamoidea und Parathelphusoidea (Crustacea, Decapoda). Abh Senckenb Naturf Ges 526: 1-338.
BÜRGER O. 1894. Beitrage zur Kentnnis der gattung Telphusa. Zool Jahrb Syst 8: 1-7.
CABRERA BD. 1973. Studies on Paragonimus and paragonimiasis in the Republic of the Philippines. I. Paragonimus metacercariae infection in Parathelphusa grapsoides. Southeast Asian J Trop Med Pub Health 4(1): 55-62.
CABRERA BD. 1984. Paragonimiasis in the Philippines: current status. Arzneimittelforschung 34(9B): 1188-92.
CHIA OKS, NG PKL. 2006. The freshwater crabs of Sulawesi, with descriptions of two new genera and four new species (Crustacea: Decapoda: Brachyura: Parathelphusidae). Raffles Bull Zool 54(2): 381-428.
COOK BD, PRINGLE CM, HUGHES JM. 2008. Phylogeography of an island endemic, the Puerto Rican freshwater crab (Epilobocera sinuatifrons). J Hered 99(2): 157-164.
CUMBERLIDGE N, NG PKL. 2009. Systematics, evolution, and biogeography of freshwater crabs. In: Crustacean Issues: Decapod Crustacean Phylogenetics. Martin JW, Crandall KA, Felder D. eds. Boca Raton, Florida: Taylor & Francis/CRC Press. p. 491-508.
CUMBERLIDGE N, NG PKL, YEO DCJ, MAGALHÃES C, CAMPOS MR, ALVAREZ F, NARUSE T, DANIELS SR, ESSER LJ, ATTIPOE FYK, CLOTILDE-BA F-L, DARWALL W, MCIVOR A, BAILLIE JEM, COLLEN B, RAM M. 2009. Freshwater crabs and the biodiversity crisis: Importance, threats, status, and conservation challenges. Biol Conserv 142: 1665-73.
DANIELS SR, STEWART BA, GOUWS G, CUNNINGHAM M, MATTHEE CA. 2002. Phylogenetic relationships of the southern African freshwater crab fauna (Decapoda: Potamonautidae: Potamonautes) derived from multiple data sets reveal biogeographic patterning. Mol Phylo Evol 25(3): 511-523.
DANIELS SR, GOUWS G, CRANDALL KA. 2006. Phylogeographic patterning in a freshwater crab species (Decapoda: Potamonautidae: Potamonautes) reveals the signature of historical climatic oscillations. J Biogeog 33(9): 1538-49.
FREITAG H, YEO DCJ. 2004. Two new species of Parathelphusa H. Milne Edwards, 1853, from the Philippines (Crustacea: Decapoda: Parathelphusidae). Raffles Bull Zool 52(1): 227-237.
HUSANA DEM, NARUSE T, KASE T. 2009. Two new cavernicolous species of the genus Sundathelphusa from western Samar, Philippines (Decapoda: Bracyura: Parathelphusidae). J Crustacean Biol 29(3): 419-427.
KLAUS S, BRANDIS D, NG PKL, YEO DCJ, SCHUBART CD. 2009. Phylogeny and biogeography of Asian freshwater crabs of the family Gecarcinucidae (Brachyura: Potamoidea). In: Crustacean Issues: Decapod Crustacean Phylogenetics. Martin JW, Crandall KA, Felder D. eds. Boca Raton, Florida: Taylor & Francis/CRC Press. p. 509-531.
LIU Q, WEI F, LIU W, YANG S, ZHANG X. 2008. Paragonimiasis: an important food-borne zoonosis in China. Trends Parasitol 24(7): 318-323.
MARTENS E VON. 1868. Ueber einige neue crustaceen. Monatsber Akad Wiss Berlin 1868: 608-615.
MAN JG DE. 1902. Die von Herrn Professor Kükenthal in Indischen Archipel gesammelten Dekapoden und Stomatopoden. In W. Kükenthal (ed.) Ergebnisse einer zoologischen Forschungsreise in den Molukken und Borneo. Abh Senckenb Naturf Ges 25: 467-929, pls. 19–27.
MILNE-EDWARDS A. 1869. Révision du genre Thelphuse et description de quelques espèces nouvelles, faisant partie de la collection du Muséum. Nouv Arch Mus Hist Nat Paris 5: 161-191, pls. 8-11.
MILNE EDWARDS H. 1853. Mémoire sur la famille des ocypodiens. Ann Sci Nat Zool (3)20: 163-228, pls. 6-11. NG PKL. 1988.
The Freshwater Crabs of Peninsular Malaysia and Singapore. Department of Zoology, National University of Singapore & Shing Lee Publishers, Singapore. p. i-viii, 4 color plates, 1-156.
NG PKL. 1991. On two species of Archipelothelphusa Bott, 1969 (Crustacea: Decapoda: Brachyura: Sundathelphusidae) from Luzon, Philippines. Zool Meded 65: 13-24.
NG PKL, GUINOT D, DAVIE PJF. 2008. Systema Brachyurorum: Part I. An annotated checklist of extant brachyuran crabs of the world. Raffles Bull Zool, Suppl No 17: 1-286.
NG PKL, RODRÍGUEZ G. 1995. Freshwater crabs as poor zoogeographical indicators: a critique of Bănărescu (1990). Crustaceana 68(8): 636-645.
NG, PKL, SKET B. 1996. The freshwater crab fauna (Crustacea: Decapoda: Brachyura) of the Philippines. IV. On the collection of Parathelphusidae from Bohol. Proc Biol Soc Washington 109: 695-706.
NG PKL, TAKEDA M. 1992. The freshwater crab fauna (Crustacea: Brachyura) of the Philippines. I. The family Potamidae Ortmann, 1896. Bull Nation Sci Mus Ser A Zool 18(4): 149-166.
NG PKL, TAKEDA M. 1993a. The freshwater crab fauna (Crustacea: Brachyura) of the Philippines. II. The genus Parathelphusa H. Milne Edwards, 1853 (family Parathelphusidae). Bull Nation Sci Mus Ser A Zool 19(1): 1-19.
NG PKL, TAKEDA M. 1993b. The freshwater crab fauna (Crustacea: Brachyura) of the Philippines. III. The identity of Telphusa cumingii Miers, 1884, and its placement in the genus Ovitamon Ng et Takeda, 1992 (family Potamidae). Bull Nation Sci Mus Ser A Zool 19(3): 111-116.
RATHBUN MJ. 1904. Les crabes d’eau douce. Nouv Arch Mus Hist Nat Paris (4)6: 225-312, pls. 9-18.
SCHUBART CD, NG PKL. 2008. A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura). Zool J Linn Soc 154(2): 211-221.
SHIH HT, YEO DCJ, NG PKL, 2009. The collision of the Indian plate with Asia: molecular evidence for its impact on the phylogeny of freshwater crabs (Brachyura: Potamidae). J Biogeogr 36(4): 703-719.
TAKEDA M. 1983. A new cavernicolous crab from Bohol, the Philippines. Bull Nation Sci Mus Tokyo Ser A 9: 169-173.
TAKEDA M, NG PKL. 2001. The freshwater crab fauna (Crustacea, Brachyura) of the Philippines: VI. A new cavernicolous crab from Mindanao. Zool Sci 18: 1123-27.
TAN SH, NG PKL. 2004. The freshwater crab fauna (Crustacea: Brachyura) of the Philippines. V. On a new genus and species of potamid from Palawan Island, Philippines. Hydrobiologia 379(1–3): 93-96.
YEO DCJ, SHIH HT, MEIER R, NG PKL. 2007. Phylogeny and biogeography of the freshwater crab genus Johora (Crustacea: Brachyura: Potamidae) from the Malay Peninsula, and the origins of its insular fauna. Zool Scripta 36(3): 255-269.
