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Saturday, October 15th, 2022
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| 7:47a | [Crustacea • 2022] Phricotelphusa sukreei • A New Species of Arboreal Freshwater Crab (Brachyura: Gecarcinucidae) from Thailand
Abstract A new species of the gecarcinucid crab genus Phricotelphusa Alcock, 1909 is described from a mountain in Phatthalung, Peninsular Thailand. The new species is arboreal and has very long ambulatory legs and superficially resembles P. aedes from Nakhon Si Thammarat, Peninsular Thailand, but can easily be distinguished by live colouration, carapace features, as well as structures of the epistome and male first gonopod. This is the first report of an arboreal freshwater crab in Thailand. Key words. Gecarcinucidae, Phricotelphusa, new species, phytotelm, high mountain, Peninsular Thailand     
Phricotelphusa sukreei, new species Diagnosis. Carapace subovate, broader than long; dorsal surfaces gently granulose to rugose; branchial regions gently inflated dorsally and laterally; frontal margin not protruding beyond level of external orbital tooth; anterolateral margin distinctly convex; epibranchial tooth spiniform, sharp, separated from external orbital angle by notch; epistome relatively wide longitudinally, lateral part of posterior margin almost straight or gently sinuous; third maxilliped ischium without visible oblique median sulcus; exopod without flagellum, not reaching distal edge of ischium; antennular fossa relatively narrow, rectangular in shape; ambulatory legs very long; male pleon broadly T-shaped, reaching imaginary longitudinal line joining median edge of bases of chelipeds; telson shorter than somite 6 with gently concave lateral margins; G1 relatively long, terminal segment gently curved, relatively longer, cone-shaped, ca. 0.3 times subterminal segment; G2 distal segment ca. 0.3 times length of basal segment. Etymology. We take pleasure in naming this species after Sukree Hajisime of the Prince of Songkla University. He has been a good friend to the first author for many years, and has been very supportive of his staff in the university, including the two co-authors. Genus Phricotelphusa Alcock, 1909 from Thailand: ปูน้ำตก Phricotelphusa aedes (Kemp, 1923), Phricotelphusa deharvengi Ng, 1988, ปูมดแดง Phricotelphusa limula (Hilgendorf, 1882), Phricotelphusa ranongi Naiyanetr, 1982 ปูเจ้าฟ้า Phricotelphusa sirindhorn Naiyanetr, 1989 Phricotelphusa callianira (De Man, 1887) Peter K. L. Ng, Pun Yeesin and Rueangrit Promdam. 2022. Phricotelphusa sukreei, A New Species of Arboreal Freshwater Crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand. RAFFLES BULLETIN OF ZOOLOGY. 70; 451–460. Peter K. L. Ng พิพิธภัณฑ์ธรรมชาติวิทยา หลี่ กง เฉี่ยน มหาวิทยาลัยแห่งชาติสิงคโปร์ พัน ยี่สิ้น นักวิชาการประมง สาขาวิชาวิทยาการเกษตรและประมง คณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี และ เรืองฤทธิ์ พรหมดำ นักวิทยาศาสตร์ พิพิธภัณฑสถานธรรมชาติวิทยา ๕๐ พรรษา สยามบรมราชกุมารี มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตหาดใหญ่ ที่ได้ร่วมกันรายงานการค้นพบ “ปูมดแดงอาจารย์ซุกรี” (Phricotelphusa sukreei) ปูน้ำจืดชนิดใหม่ของโลก ลักษณะเด่น กระดองมีสีแดง ขายาวเป็นพิเศษ พบอาศัยบนต้นไม้เตี้ยๆ กระจายพันธุ์บนเทือกเขาสูงที่มีความชื้นสูง บริเวณคาบสมุทรภาคใต้ของประเทศไทย ตั้งชื่อเพื่อเป็นเกียรติแด่ รศ.ดร.ซุกรี หะยีสาแม อดีตคณบดี คณะวิทยาศาสตร์และเทคโนโลยี ม.อ. ปัตตานี  | ||||
| 1:20p | [Herpetology • 2022] Hypsiscopus murphyi • Undescribed Diversity in A Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus)
Abstract Mud snakes (Serpentes: Homalopsidae) are a morphologically diverse family of aquatic snakes distributed from eastern Pakistan, eastward through South Asia, mainland and maritime Southeast Asia, and extending to New Guinea and northern Australia. Some species of homalopsids represent the most abundant tetrapods in aquatic systems in tropical Asia, but with few evolutionary studies investigating their diversity with dense geographic and taxonomic sampling. The genus Hypsiscopus includes two named species that inhabit freshwater systems throughout most of Southeast Asia: H. matannensis of Sulawesi, and the widespread H. plumbea found in rivers, lakes, and rice paddies in the remainder of Southeast Asia. We use a multilocus dataset of two mitochondrial and three nuclear genes with dense sampling of H. plumbea to elucidate the evolutionary history of this genus. We find that H. plumbea is paraphyletic with respect to H. matannensis, with populations around and north of Central Thailand's Khorat Plateau phylogenetically outside of a clade containing H. matannensis and H. plumbea south of the Khorat Plateau. This lineage differs morphologically and genetically from H. plumbea sensu stricto (south of the Khorat Plateau) and H. matannensis. We describe this lineage as a third species of Hypsiscopus based on its phylogenetic position and meristic and color pattern data. This study exemplifies the need to investigate widespread, abundant taxa to better understand the evolutionary histories of aquatic snakes in Southeast Asia.    Hypsiscopus murphyi, new species Murphy’s Mud Snake Etymology.—The specific epithet is a patronym for John C. Murphy, who has dedicated decades of his research career to investigating and describing homalopsid snakes. Distribution.—Hypsiscopus murphyi is distributed from Taiwan and southern China (Zhejiang Province) at its northernmost limit (but see Discussion), extending southward into China (including Hainan Island), into Vietnam, Laos, Cambodia, and Thailand. The southern limit of this species based on our sampling occurs in Phetchaburi, Thailand. Specimens from adjacent and nearby islands will need to be identified pending future molecular and morphological comparisons (e.g., Andaman Islands and other parts of India and Myanmar [Murphy, 2007; Murphy and Voris, 2014]). Justin M. Bernstein, Harold K. Voris, Bryan L. Stuart, Somphouthone Phimmachak, Sengvilay Seateun, Niane Sivongxay, Thy Neang, Daryl R. Karns, Heather L. Andrews, Jennifer Osterhage, Elizabeth A. Phipps, and Sara Ruane. 2022. Undescribed Diversity in A Widespread, Common Group of Asian Mud Snakes (Serpentes: Homalopsidae: Hypsiscopus). Ichthyology & Herpetology. 110(3); 561-574. DOI: 10.1643/h2022015 |
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