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Dipsas ellipsifera (BOULENGER, 1898)

IUCN Red List - Dipsas ellipsifera - Endangered, EN

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common Names 
SynonymLeptognathus ellipsifera BOULENGER 1898: 117
Sibynomorphus ellipsifer — AMARAL ‘‘1929’’ [1930]: 197
Dipsas ellipsifera — PETERS 1960: 87
Dipsas elegans — PETERS 1960: 87 (part.)
Dipsas oreas ellipsifera — ORCÉS & ALMENDÁRIZ 1987
Dipsas ellipsifera — CADLE 2005
Dipsas ellipsifera — WALLACH et al. 2014: 232 
DistributionNW Ecuador (valley of the Río Mira, Imababura Province); W Colombia

Type locality: Ibarra, Ecuador  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesLectotype: BMNH 1946.1.21.26; paralectotypes: BMNH 1946. 1. 21. 26–29 
DiagnosisDiagnosis: Cadle 2005: 82.


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CommentDipsas ellipsifera has been removed from the synonymy of D. elegans and relegated to subspecies status of D. oreas (fide Orcés & Almendáriz 1987).

Behavior: Dipsas ellipsifera is nocturnal.

Synonymy mostly after CADLE 2005.

Habitat: fully arboreal (Harrington et al. 2018). 
EtymologyNamed after Greek elleipsis (ἔλλειψις), ellipse + Greek phero (φέρω), bing, bear, carry. [“...Olive-brown above, regularly marked with black ellipses with lighter centres disposed vertically on each side of the body...”]. (from Esteban Lavilla, pers. comm., May 2024) 
References
  • Amaral,A. do 1930. Estudos sobre ophidios neotropicos XVIII. Lista remissiva dos ophidios da região neotropica. Mem. Inst. Butantan 4: 126-271 [1929] - get paper here
  • Arteaga, A.; Bustamante, L.; Vieira, J. 2024. Reptiles of Ecuador. Khamai Foundation & Tropical Herping, 1073 pp. - get paper here
  • Bernal, R. 2025. Serpientes de Colombia-Guía de Campo. Serie de Guías Tropicales de Campo. 19: 396 pp. Conservación Internacional Colombia, Bogotá - get paper here
  • Boulenger, George A. 1898. An account of the reptiles and batrachians collected by Mr. W. F. H. Rosenberg in western Ecuador. Proc. Zool. Soc. London 1898: 107-126 - get paper here
  • Cadle, J. E. 2005. SYSTEMATICS OF SNAKES OF THE DIPSAS OREAS COMPLEX (COLUBRIDAE: DIPSADINAE) IN WESTERN ECUADOR AND PERU, WITH REVALIDATION OF D. ELEGANS (BOULENGER) AND D. ELLIPSIFERA (BOULENGER). Bull. Mus. Comp. Zool. Harvard 158 (3): 67-136 - get paper here
  • Gemel, R.; G. Gassner & S. Schweiger 2019. Katalog der Typen der Herpetologischen Sammlung des Naturhistorischen Museums Wien – 2018. Ann. Naturhist. Mus. Wien, B 121: 33–248 - get paper here
  • 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
  • Orcés,V. & Almendáriz,A. 1987. Sistematica y distribución de las serpientes dipsadinae del grupo oreas. Politécnica, 12 (4):135-44
  • Pérez-Santos,C. & Moreno, A.G. 1988. Ofidios de Colombia. Museo reegionale di Scienze Naturali, Torino, Monographie VI, 517 pp.
  • Peters , J. A. 1960. The snakes of the subfamily Dipsadinae. Misc. Publ. Mus. Zool., Univ. Michigan (114): 224 pp. - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - 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.
  • Werner, F. 1910. Neue oder seltenere Reptilien des Musée Royal d'Histoire Naturelle de Belgique in Brüssel. [Mabuia dolloi, Mabuia polylepis]. Zool. Jb. Abt. Syst. Okol. Geogr. 28 [1909]: 263-288. - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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