Kee Lin, Peter Ng
Email Address
nhmngkl@nus.edu.sg
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Publication Epigean and hypogean freshwater shrimps of Bohol Island, central Philippines (Crustacea: Decapoda: Caridea)(2009-02-28) Cai, Y.; Choy, S.; Ng, P.K.L.; BIOLOGICAL SCIENCESThe epigean and hypogean freshwater shrimps from Bohol Island, central Philippines, collected during various speleological expeditions by the Philippine, Slovenian and Singaporean scientists between 1995 and 2000 are reported here. The material contains 25 species of caridean shrimps in two families. The Atyidae are represented by 16 species from four genera: Antecaridina, Halocaridinides and Atyopsis, each with one species; and Caridina, with 13 species, including seven new taxa. The Palaemonidae are represented by two genera, Macrobrachium with eight species and Palaemon with one. Detailed descriptions are provided for new and rarely reported species. © National University of Singapore.Publication Atergatis subdentatus (de Haan, 1835), Atergatopsis germaini A. Milne Edwards, 1865 and Platypodia eydouxi (A. Milne Edwards, 1865) (Crustacea: Decapoda: Xanthoidea: Xanthidae: Zosiminae) - First stage zoeal descriptions with implications for the subfamily(2004-12-31) Clark, P.F.; Ng, P.K.L.; Ho, P.-H.; BIOLOGICAL SCIENCESThe first stage zoeas of Atergatis subdentatus (de Haan, 1835), Atergatopsis germaini A. Milne-Edwards, 1865, and Platypodia eydouxi (A. Milne-Edwards, 1865) are described for the first time, Actaeodes tomentosus (H. Milne Edwards, 1834) are fully illustrated, Atergatis floridus (Linnaeus, 1767) are redescribed, and those of Platypodiella spectabilis (Herbst, 1794) are re-examined. A list of characters is tabulated for all known zosimine first stage zoeas. The zoeal evidence appears to support adult taxonomy by highlighting the difficulties in clarifying the systematics within the xanthoidean taxa, Zosiminae Alcock, 1898 and Actaeinae Alcock, 1898. © National University of Singapore.Publication Limestone karsts of southeast Asia: Imperiled arks of biodiversity(2006-09) Clements, R.; Sodhi, N.S.; Schilthuizen, M.; Ng, P.K.L.; BIOLOGICAL SCIENCESThe overexploitation of the world's biomes for natural products calls for the prioritization of biologically important ecosystems for conservation. Here we show that limestone karsts are "arks" of biodiversity and often contain high levels of endemism. Humans have exploited karsts for a variety of products and services, but unsustainable practices have caused population declines and extinctions among site-endemic taxa. Limestone quarrying is the primary threat to karst biodiversity in Southeast Asia, where quarrying rates exceed those in other tropical regions. Several socioeconomic, political, and scientific issues undermine the stewardship of these karsts. Mitigation of these problems will involve (a) better land-use planning to prevent karst resources from being exhausted in developing regions, (b) comprehensive assessments of a karst's economic and biological value before development, (c) improved legislation and enforcement to protect karst biodiversity, and (d) increased research and activities to promote public awareness of the importance of karsts and the threats facing them. © 2006 American Institute of Biological Sciences.Publication Revision of Selatium Serene & Soh, 1970 (Crustacea: Brachyura: Sesarmidae),with description of a new genus and two new species(2009-07-10) Schubart, C.D.; Liu, H.-C.; Ng, P.K.L.; BIOLOGICAL SCIENCESThe Indo-West Pacific sesarmid genus Selatium Serène & Soh, 1970, is revised, and two wide-ranging species are recognized, S. brockii (De Man, 1887) and S. elongatum (A. Milne-Edwards, 1869). A new genus, Lithoselatium, which superficially resembles Selatium, is described, and two new species are recognized: L. pulchrum n. sp. from Taiwan, and L. kusu n. sp. from Singapore and nearby areas. Their relationship is discussed using both morphological and molecular datasets. Copyright © 2009 · Magnolia Press.Publication The Indo-Pacific Pilumnidae XII. On the familial placement of Chlorodiella bidentata (Nobili, 1901) and Tanaocheles stenochilus Kropp, 1984 using adult and larval characters with the establishment of a new subfamily, Tanaochelinae (Crustacea: Decapoda: Brachyura)(2000-02) Ng, P.K.L.; Clark, P.F.; BIOLOGICAL SCIENCESWithin the Xanthoidea, Chlorodiella bidentata (Nobili, 1901) had been assigned to the Xanthidae MacLeay, 1838 and Tanaocheles stenochilus Kropp, 1984, to the Trapeziidae Miers, 1886. The adult characters of these two species are re-appraised and are considered to be congeneric. The familial position of Tanaocheles is reviewed and the genus does not conform to the diagnosis of the Xanthidae or Trapeziidae. The taxon is, therefore, placed in the Pilumnidae Samouelle, 1819, sensu Guinot, 1978, and assigned to a new subfamily. The first stage zoeal chaetotaxy of C. bidentata supports the adult revision at the family level.Publication The deepwater geryonid crab, Chaceon granulatus (Sakai) in Taiwan (Decapoda, Brachyura)(1998-01) Ng, P.K.L.; Chan, T.-Y.; Tan, S.H.; BIOLOGICAL SCIENCESThe deepwater geryonid crab, Chaceon granulatus (Sakai, 1978) is reported from Taiwan for the first time. This is also the first record of the family Geryonidae from Taiwan. Sexual dimorphism between the sexes is reported. Additional notes on the differences between this species and the closely allied C. manningi Ng, Lee and Yu, 1994, from the South China Sea are also provided.Publication The first zoeal stage morphology of Crossotonotus spinipes (De Man, 1888) and Pseudopalicus serripes (Alcock & Anderson, 1895), with implications for Palicoid systematics (Crustacea: Brachyura: Palicoidea)(2012-07-04) Clark, P.F.; Fujita, Y.; Ball, A.D.; Ng, P.K.L.; BIOLOGICAL SCIENCESTraditionally, Crossotonotus spinipes (De Man, 1888) and Pseudopalicus serripes (Alcock & Anderson, 1895) were assigned to the Crossotonotinae Moosa & Serène, 1981, and Palicinae Bouvier, 1898, respectively. However, Ng et al. (2008:127) listed a number of major adult characters that suggested both subfamilies should be recognised as distinct families within the Palicoidea Bouvier, 1898 (see also Castro 2010, 2011; Guinot et al. in prep.). Recently, ovigerous specimens of C. spinipes and P. serripes were collected from Okinawajima and Kumejima, central Ryukyu Islands, Japan. The first zoeal stages of both species were hatched in the laboratory, dissected, examined, and the appendages illustrated and described. Crossotonotus spinipes first stage zoeas were distinguished by three characters: the absence of lateral carapace spines (present in P. serripes), abdominal somite 4 with a pair of dorsolateral processes directed ventrally (absent in P. serripes) and the presence of a small lateral spine on the telson (absent in P. serripes). These distinguishing features appear to support the recent division of the Palicoidea into two families. Copyright © 2012. Magnolia Press.Publication Two new species of sesarmid crabs (Crustacea: Decapoda: Brachyura) associated with limestone formations in West Papua, Indonesia(2009-03-02) Wowor, D.; Ng, P.K.L.; BIOLOGICAL SCIENCESTwo new species of karst sesarmid crabs of the genus Karstarma Davie & Ng, 2007, are described from western Papua, Indonesia. Karstarma ardea n. sp. differs from the allied K. ultrapes (Ng, Guinot & Iliffe, 1994) from the Solomon Islands by its proportionately shorter ambulatory legs and the shape of its vulva. Karstarma waigeo n. sp. is closest to K balicum (Ng, 2002) from Bali, Indonesia, but differs in its proportionately longer ambulatory legs and in the morphology of the male first gonopod. © 2009 . Magnolia Press.Publication On two new species of Geothelphusa Stimpson, 1858 (Decapoda, Brachyura, Potamidae) from the Ryukyu Islands, Japan(1998-10) Shy, J.-Y.; Ng, P.K.L.; BIOLOGICAL SCIENCESTwo new species of potamid freshwater crabs of the genus Geothelphusa are described from the Ryukyu Islands in southern Japan. Although both G. shokitai sp. nov. and G. minei sp. nov. are allied to G. candidiensis (type locality Taiwan), they differ from that species and from each other in the form of their carapaces, ambulatory leg proportions, and structure of their male first pleopods.Publication Two new species of orcovita (crustacea: Decapoda:Brachyura: Varunidae) from Anchialine caves on Christmas Island, Eastern Indian Ocean(2012-02) Davie, P.J.F.; Ng, P.K.L.; BIOLOGICAL SCIENCESTwo new species of anchialine varunid crabs of the genus Orcovita Ng & Tomascik, 1994, O. orchardorum and O. hicksi, are described from Christmas Island, eastern Indian Ocean. This marks the first record of Orcovita from the Indian Ocean. The new species are easily distinguished from congeners by differences in the form of the carapace, chelae, ambulatory legs, and male abdomen. Two groups of Orcovita are recognised, and their affinities discussed. A new key is provided for the 10 known species. © National University of Singapore.