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Lycodon semicarinatus (COPE, 1860)

IUCN Red List - Lycodon semicarinatus - Least Concern, LC
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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Loo-Choo Big-tooth Snake, Ryukyu Odd-tooth snake 
SynonymEumesodon semicarinatus COPE 1860: 263
Dinodon semicarinatus — BOULENGER 1892: 302
Dinodon semicarinatus — BOULENGER 1893: 362
Lepidocephalus fasciatus HALLOWELL 1860: 498
Dinodon semicarinatum — STEJNEGER 1907: 366
Dinodon semicarinatum — MAKI 1931: 123
Dinodon semicarinatum — SCLATER 1950
Dinodon semicarinatum — GORIS & MAEDA 2004: 224
Dinodon japonicus
Lycodon semicarinatus — SILER et al. 2013 (by implication)
Dinodon semicarinatum — WALLACH et al. 2014: 237
Dinodon semicarinatus — ACKERMANN 2016
Lycodon semicarinatum — WALLACH 2025 
DistributionJapan (Okinawa shima, Amami-oshima)

Type locality: “Loo Choo”.  
Reproductionoviparous 
TypesSyntype: USNM 7354, ANSP 3479 [Lepidocephalus fasciatus] 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 1412 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy: According to STEJNEGER Cyclophiops semicarinatus and Dinodon semicarinatum are not the same. However, some of the synonyms might have been confused (this synonymy is after STEJNEGER 1907). 
EtymologyNamed after Latin semi = half + Latin carinata, keeled, ridged. 
References
  • Ackermann, L. 2016. In den Wäldern von Okinawa. Terraria-Elaphe 2016 (5): 48-51 - get paper here
  • Boulenger, G. A. 1892. Description of new reptiles and batrachians from the Loo Choo Islands. Ann. Mag. nat. Hist. (6) 10: 302-304 - get paper here
  • Boulenger, G.A. 1893. Catalogue of the snakes in the British Museum (Nat. Hist.) I. London (Taylor & Francis), 448 pp. - get paper here
  • Cope, E.D. 1860. Catalogue of the Colubridae in the Museum of the Academy of Natural Sciences of Philadelphia, with notes and descriptions of new species. Part II. Proc. Acad. Nat. Sci. Philadelphia 12: 241-266 - get paper here
  • Goris, R.C. & Maeda, N. 2004. Guide to the Amphibians and Reptiles of Japan. Krieger, Malabar, 285 pp.
  • Guo, Peng; Liang Zhang, Qin Liu, Cao Li, R. Alexander Pyron, Ke Jiang, Frank T. Burbrink 2013. Lycodon and Dinodon: One genus or two? Evidence from molecular phylogenetics and morphological comparisons. Molecular Phylogenetics and Evolution 68 (1): 144–149 - get paper here
  • Hallowell, E. 1861. Report upon the Reptilia of the North Pacific Exploring Expedition, under command of Capt. John Rogers, U. S. N. Proc. Acad. Nat. Sci. Philadelphia 12 [1860]: 480 - 510 - get paper here
  • Janssen HY, Pham CT, Ngo HT, Le MD, Nguyen TQ, Ziegler T 2019. A new species of Lycodon Boie, 1826 (Serpentes, Colubridae) from northern Vietnam. ZooKeys 875: 1-29 - get paper here
  • Kumazawa, Y.; Ota, H.; Nishida, M.; Ozawa, T. 1998. The complete nucleotide sequence of a snake (Dinodon semicarinatus) mitochondrial genome with two identical control regions. Genetics 150:313-329
  • Maki, M. 1931. Monograph of the Snakes of Japan. Dai-ichi Shobo, Tokyo. (1), 7, 240 pages (expanded edition 1933)
  • Malnate, Edmond V. 1971. A catalogue of primary types in the Herpetological Collections of the Academy of Natural Sciences, Philadelphia (ANSP). Proccedings of the Academy of Natural Sciences of Philadelphia 123 (9): 345-375 - get paper here
  • Matsumoto, K., & Mori, A. 2021. Adaptive foraging strategy of an insular snake (Lycodon semicarinatus, Colubridae) feeding on patchily distributed nests of sea turtles. Behaviour, 1(aop), 1-31 - get paper here
  • Ryabov, S.; Kudrjavzev, S. & Ognev, S. 2003. Pflege und Zucht der Ryukyu-Grosszahnnatter, Dinodon semicarinatum (COPE 1861). Sauria 25 (3): 25-28 - get paper here
  • Sclater, J.A. 1950. Bionomic notes on some reptiles form Okinawa Shima, Ryukyu Islands, Japan. Ann. Mag. Nat. Hist. (12) 3: 113-116 - get paper here
  • Siler, C. D., Oliveros, C. H., Santanen, A., Brown, R. M. 2013. Multilocus phylogeny reveals unexpected diversification patterns in Asian wolf snakes (genus Lycodon). Zoologica Scripta 42: 262–277 - get paper here
  • Stejneger, LEONHARD H. 1907. Herpetology of Japan and adjacent territory. Bull. US Natl. Mus. 58: xx, 1-577 - get paper here
  • Stuart, Gary W.; Karen Moffett and Jeffery J. Leader 2002. A Comprehensive Vertebrate Phylogeny Using Vector Representations of Protein Sequences from Whole Genomes. Mol. Biol. Evol. 19 (4):554–562 - get paper here
  • Takiguchi, Isao; Ota, Hidetoshi 2006. Sexual dimorphism in a colubrid snake, Dinodon semicarinatum (Reptilia: Squamata), from Okinawajima Island of the Central Ryukyus, Japan. Current Herpetology 25 (2):79-92. - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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