Opisthotropis alcalai BROWN & LEVITON, 1961

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Higher Taxa	Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Gary's Mountain Keelback
Synonym	Opisthotropis alcali BROWN & LEVITON 1961: 2 Opisthotropis alcalai — BROWN & ALCALA 1970: 115 Opisthotropis alcalai — DAVID et al. 2011 Opisthotropis alcalai — WALLACH et al. 2014: 508 Opisthotropis alcalai — MAGLANGIT et al. 2023
Distribution	Philippines (Mindanao) Type locality: Cugat Creek, on the west side of Dapitan Peak, Mt. Malindang, Zamboanga del Norte Province, Mindanao (2500 m).
Reproduction	oviparous
Types	Holotype: CAS-SUR 22250, CAS-SUR 22250
Diagnosis
Comment	Habitat: aquatic, inhabiting flowing streams. Diet: fishes, frogs, tadpoles, freshwater shrimp and earthworms. Behavior: nocturnal
Etymology	Named after Angel Alcala, the collector of the holotype.
References	Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here Brown, Walter C.; Alcala, Angel C. 1970. The zoogeography of the herpetofauna of the Philippine Islands, a fringing archipelago. Proc. Cal. Acad. Sci. 38 (6): 105-130 - get paper here Brown,W.C. & Leviton,A.E. 1961. Discovery of the snake genus Opisthotropis in the Philippine Islands, with description of a new species. Occasional Papers of the Natural History Museum of Stanford University (8): 1-11 DAVID, PATRICK; CUONG THE PHAM, TRUONG QUANG NGUYEN & THOMAS ZIEGLER 2011. A new species of the genus Opisthotropis Günther, 1872 (Squamata: Natricidae) from the highlands of Kon Tum Province, Vietnam. Zootaxa 2758: 43–56 - get paper here Leviton, Alan E.; Cameron D. Siler, Jeffrey L. Weinell, and Rafe M. Brown 2018. Synopsis of the Snakes of the Philippines. Proc. Cal. Acad. Sci. 64 (14): 399-568 - get paper here Maglangit, E. P. T., Bonachita, S. A. A., Arnado, M. J. T., & Nuñeza, O. M. 2023. Notes on the distribution and natural history of the enigmatic and endangered Opisthotropis alcalai (Brown & Leviton, 1961) on Mindanao Island, Philippines. Herpetology Notes, 16, 527-531 TEYNIÉ, ALEXANDRE; ANNE LOTTIER, PATRICK DAVID, TRUONG QUANG NGUYEN & GERNOT VOGEL 2014. A new species of the genus Opisthotropis Günther, 1872 from northern Laos (Squamata: Natricidae). Zootaxa 3774 (2): 165–182 - 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. Weinell, Jeffrey L.; Errol Hooper, Alan E. Leviton, Rafe M. Brown 2019. Illustrated Key to the Snakes of the Philippines. Proc. Cal. Acad. Sci. (4) 66 (1): 1-49 - get paper here YANG, JIAN-HUAN; YIK-HEI SUNG & BOSCO PUI-LOK CHAN 2013. A new species of the genus Opisthotropis Günther, 1872 (Squamata: Colubridae: Natricinae) from Guangdong Province, China. Zootaxa 3646 (3): 289–296 - get paper here YANG, JIAN-HUAN; YING-YONG WANG, BING ZHANG, MICHAEL WAI-NENG LAU & WEN-HAO CHOU 2011. Revision of the diagnostic characters of Opisthotropis maculosa Stuart and Chuaynkern, 2007 with notes on its distribution and variation, and a key to the genus Opisthotropis (Squamata: Natricidae). Zootaxa 2785: 61–68 - get paper here Ziegler, Thomas; Patrick David, Vu Ngoc Thanh 2008. A new natricine snake of the genus Opisthotropis from Tam Dao, Vinh Phuc Province, northern Vietnam (Squamata, Colubridae). Zoosystematics and Evolution 84 (2): 197 -203 - get paper here
External links	IUCN Red List Google images

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