Dipsas williamsi (CARILLO DE ESPINOZA, 1974)

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Higher Taxa	Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Williams' Tree Snake
Synonym	Sibynomorphus williamsi CARILLO DE ESPINOZA 1974 Sibynomorphus williamsi — CADLE 2007 Sibynomorphus williamsi — WALLACH et al. 2014: 671 Dipsas williamsi — ARTEAGA et al. 2018
Distribution	Peru (Lima) Type locality: Peru, Lima, Jicamarca
Reproduction	oviparous
Types	Holotype: MUSM 2170
Diagnosis	Diagnosis: Cadle 2007.
Comment	Diet: primarily molluscs (T. de Lema, pers. comm., 16 Oct 2015). Habitat: fully arboreal (Harrington et al. 2018).
Etymology	Sibynomorphus williamsi was named for Ernest E. Williams (1914-1998), former curator of herpetology and professor of biology at the Museum of Comparative Zoology, Harvard University.
References	Arteaga A, Salazar-Valenzuela D, Mebert K, Peñafiel N, Aguiar G, Sánchez-Nivicela JC, Pyron RA, Colston TJ, Cisneros-Heredia DF, Yánez-Muñoz MH, Venegas PJ, Guayasamin JM, Torres-Carvajal O 2018. Systematics of South American snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Ecuador and Peru. ZooKeys 766: 79-147 - get paper here Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here Cadle, J.E. 2007. The snake genus Sibynomorphus (Colubridae: Dipsadinae: Dipsadini) in Peru and Ecuador, with comments on the systematics of Dipsadini. Bull. Mus. Comp. Zool. Harvard 158(5):183-283 - get paper here Carillo DE ESPINOZA 1974. Sibynomorphus williamsi nov. sp. (Serpentes: Colubridae. Publicaciones del Museo de Historia Natural ‘‘Javier Prado,’’ serie A (Zoología), 24: 1-16 Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - 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.
External links	IUCN Red List National Center for Biotechnology Information http://www.mcz.harvard.edu/Publications/pubs/mczbull-158-5-183.pdf Google images

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