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Siebenrockiella leytensis (TAYLOR, 1920)

IUCN Red List - Siebenrockiella leytensis - Critically Endangered, CR
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Higher TaxaGeoemydidae (Geoemydinae), Testudinoidea, Testudines (turtles)
Subspecies 
Common NamesE: Leyte Pond Turtle, Philippine Forest Turtle, Palawan Forest Turtle
G: Philippinen-Erdschildkröte, Philippinische Waldschildkröte 
SynonymHeosemys leytensis TAYLOR 1920: 131
Geoemyda leytensis — MERTENS et al. 1934
Heosemys leytensis — OBST 2003: 17
Siebenrockiella (Panyaenemys) leytensis — DIESMOS et al. 2005
Siebenrockiella leytensis — TTWG 2014
Siebenrockiella leytensis — TTWG 2021 
DistributionPhilippines (S Leyte and Palawan Province)

Type locality: "Cabalian, southern Leyte," Philippines.  
Reproductionoviparous. 
TypesNeotype: CAS 60930 designated by Buskirk (1989).
Holotype: "An unnumbered specimen in the zoölogical laboratory, University of the Philippines," Diliman, Quezon City, later transferred to the Bureau of Science according to Taylor 1944:160; destroyed during World War II. 
Diagnosis 
CommentConservation: This is one of the 25 most endangered turtle species according to a 2003 assessment by the IUCN.

Relationships: Based on mitochondrial DNA sequences, this species is closely related to Siebenrockiella crassicollis (DIESMOS et al. 2005).

Habitat: freshwater (Rivers, swamps)

Abundance: Rare. This is one of the species called 'lost' and 'rediscovered' by Lindken et al. 2024. 
EtymologyNamed after the type locality. 
References
  • Bour, R. 2008. Global diversity of turtles (Chelonii; Reptilia) in freshwater. Hydrobiologia 595:593–598 - get paper here
  • Buskirk, J.R. 1989. A third specimen and neotype of Heosemys leytensis (Chelonia: Emydidae). Copeia 1989 (1): 224-227 - get paper here
  • DIESMOS, A. C., G. V. A. GEE, M. L. DIESMOS, R. M. BROWN, P. J. WIDMANN & J. C. DIMALIBOT 2004. Rediscovery of the Philippine Forest Turtle, Heosemys leytensis (Chelonia: Bataguridae), from Palawan Island, Philippines. Asiatic Herpetological Research 10: 22-27 - get paper here
  • Diesmos, A.c., busKirK, J.r., schoppe, s., diesmos, m.l.l., sy, e.y., And brown, r.m. 2012. Siebenrockiella leytensis (Taylor 1920) – Palawan Forest Turtle, Philippine Forest Turtle. In: Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. (Eds.). Conservation Biology of Fres Chelonian Research Monographs No. 5: 066.1–066.9, doi:10.3854/ crm.5.066.leytensis.v1.2012 - get paper here
  • Diesmos, Arvin C.; Rafe M. Brown, Angel C. Alcala, and Rogelio V. Sison 2008. Status and Distribution of Nonmarine Turtles of the Philippines. Chelonian Conservation and Biology 7(2): 157 - get paper here
  • Diesmos, Arvin; Parham, James F.; Stuart, Bryan L.; Brown, Rafe M. 2005. The phylogenetic position of the recently rediscovered Philippine forest turtle (Bataguridae: Heosemys leytensis). Proc. Cal. Acad. Sci. 56 (3):31-41. - get paper here
  • Ernst,C.H. and Barbour,R.W. 1989. Turtles of the World. Smithsonian Institution Press, Washington D.C. - London
  • Gaulke, Maren; Fritz, Uwe 1998. Distribution patterns of batagurid turtles in the Philippines (Testudines: Bataguridae: Cuora, Cyclemys, Heosemys). Herpetozoa 11 (1/2): 3-12 - get paper here
  • Innis, Charles J.; Kenneth Conley, Paul Gibbons, Nicole I. Stacy, Heather D.S. Walden, Paolo Martelli, Sonja Luz, Karthiyani Krishnasamy, Cris Hagen, John Sykes, Diverlie Acosta, Kyle Tabug, Matthew O'Connor, Vicente Vergara Wilson, James Liu, Czaba 2022. Veterinary Observations and Biological Specimen Use after a Massive Confiscation of Palawan Forest Turtles (Siebenrockiella leytensis) Chelonian Conservation and Biology Jun 2022 Vol. 21, No. 1: 46-62 - get paper here
  • Lindken T.; Anderson, C. V., Ariano-Sánchez, D., Barki, G., Biggs, C., Bowles, P., Chaitanya, R., Cronin, D. T., Jähnig, S. C., Jeschke, J. M., Kennerley, R. J., Lacher, T. E. Jr., Luedtke, J. A., Liu, C., Long, B., Mallon, D., Martin, G. M., Meiri, 2024. What factors influence the rediscovery of lost tetrapod species? Global Change Biology, 30: 1-18 - get paper here
  • Obst, F.J. 2003. Sumpfschildkröten. Draco 4 (13): 4-18 - get paper here
  • Schilde, M. 2004. Asiatische Sumpfschildkröten - Die Familie Geoemydidae in Südostasien, China und Japan. Natur und Tier Verlag (Münster), 192 pp. - get paper here
  • Schoppe, Sabine 2014. It takes a village. The Tortoise 1 (3): 46-49 - get paper here
  • Schoppe, Sabine, Chris R. Shepherd and Claire Beastall 2013. The Palawan Forest Turtle. The Tortoise 1 (2): 108-117.
  • Sy, Emerson Y. 2014. Siebenrockiella leytensis (Philippine forest turtle) artificial incubation and hatchling size. Herpetological Review 45 (3): 454-455 - get paper here
  • Sy, Emerson Y. and Emmanuel Ryan C. De Chavez. 2014. Siebenrockiella leytensis (Philippine forest turtle) diet. Herpetological Review 45 (3): 487-488 - get paper here
  • Taylor, E.H. 1920. Philippine turtles. Philippine Journal of Science. Manila. 16 (2): 111-144 [7 plates] - get paper here
  • Taylor, E.H. 1944. Present location of certain herpetological and other type specimens. Univ. Kansas Sci. Bull. 30 (1): 117-187. - get paper here
  • TTWG [Peter Paul van Dijk, John B. Iverson, Anders G.J. Rhodin, H. Bradley Shaffer, and Roger Bour] 2014. Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with Maps, and Conservation Status. 000.v7. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v7.2014 - get paper here
  • TTWG; Rhodin, A.G.J., Iverson, J.B., Bour, R., Fritz, U., Georges, A., Shaffer, H.B., and van Dijk, P.P. 2021. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (9th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Stanford, C.B., Goode, E.V., Buhlmann, K.A., and Mittermeier, R.A. (Eds.). Chelonian Research Monographs 8:1–472. doi:10.3854/crm.8.checklist.atlas.v9.2021. - get paper here
 
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