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Chilabothrus inornatus (REINHARDT, 1843)

IUCN Red List - Chilabothrus inornatus - Least Concern, LC
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Higher TaxaBoidae (Boinae), Henophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Puerto Rican Boa
G: Puerto-Rico-Boa 
SynonymBoa inornata REINHARDT 1843: 253
Chilabothrus inornatus — DUMÉRIL & BIBRON 1844: 563
Chilabothrus inornatus — JAN 1864
Piesigaster boettgeri SEOANE 1881 (fide SCHWARTZ & HENDERSON 1988)
Chilabothrus inornatus — GARMAN 1887: 279
Epicrates inornatus — BOULENGER 1893: 97
Epicrates inornatus — STEJNEGER 1904: 688
Epicrates inornatus — SHEPLAN & SCHWARTZ 1974: 94
Epicrates inornatus — SCHWARTZ & HENDERSON 1991: 607
Boella tenella SMITH & CHISZAR 1992
Epicrates inornatus — MCDIARMID, CAMPBELL & TOURÉ 1999: 198
Chilabothrus inornatus — REYNOLDS et al. 2013
Epicrates inornatus — WALLACH et al. 2014: 273
Chilabothrus inornatus — REYNOLDS & HENDERSON 2018: 13
Chilabothrus inornatus — REYNOLDS et al. 2023 
DistributionPuerto Rico

Type locality: Puerto Rico.  
Reproductionovoviviparous 
TypesSyntypes: ZMUC (UZM) R.5597-98, UZM R.55101 (ZMUC) 
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 1025 characters), are available for collaborators and contributors. Please contact us for details. 
CommentDistribution: Boella tenella has been (erroneously) reported from Mexico.

Type species: Boa inornata REINHARDT 1843: 253 is the type species of the genus Chilabothrus DUMÉRIL & BIBRON 1844.

Phylogenetics: see Onary et al. 2018 for fossil data on this genus.

Habitat: partly arboreal (Harrington et al. 2018).

Extinct species of the genus Chilabothrus: C. stanolseni (Vanzolini 1952). 
EtymologyNamed after Latin inōrnātus (in- “not” +‎ ōrnātus “adorned, decorated”.) It refers to the species lack of adornment. (M. Salimian, pers. comm., 9 Sep 2024)

The genus was named after the Greek cheilos, meaning "lip", á "without" and bothros "pits", probably due to the fact that some species have labial pits and others do not. 
References
  • Bernstein, J. M., Calderón‐Acevedo, C. A., Mônico, P. I., Viñola‐Lopez, L. W., & Soto‐Centeno, J. A. 2024. A rapid inventory of amphibians, squamates, and bats of Mata de Plátano Field Station and Nature Reserve, Arecibo, Puerto Rico. Ecology and Evolution, 14(7): e11648. - get paper here
  • Biswas, A., Ghosh, A., & Agashe, M. 2025. In ‘hot’pursuit: exploring the evolutionary ecology of labial pits in boas and pythons. Proceedings B, 292(2045), 20250199 - 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
  • Britton, Adam R. C. 1996. The bat-eating snakes of Puerto Rico. Reptilian 4 (4): 20-23
  • Calderón-Acevedo, C., Mônico, P., Viñola-Lopez, L., & Soto-Centeno, J. 2024. A Rapid Inventory of Amphibians, Squamates, and Bats of Mata de Plátano Field Station and Nature Reserve, Arecibo, Puerto Rico. Preprint - get paper here
  • Duméril, A. M. C. and G. Bibron. 1844. Erpetologie Générale ou Histoire Naturelle Complete des Reptiles. Vol.6. Libr. Encyclopédique Roret, Paris, 609 pp. - get paper here
  • Garman, S. 1887. On West Indian reptiles in the Museum of Comparative Zoology at Cambridge, Mass. Proc. Amer. Philos. Soc. 24: 278-286. - get paper here
  • Harper, S., Fallick, S., Hake, T., Feliciano-Rivera, F. A., & Elden, J. M. 2023. Opportunistic Records of Herpetofauna in Mainland Puerto Rico with photographic accounts of species and habitat. Bulletin of the Chicago Herpetological Society, 58(9), 150-157 - 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
  • Jan, G. 1864. Iconographie générale des ophidiens. 6. Livraison. J.B. Bailière et Fils, Paris - get paper here
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp.
  • MORALES-PÉREZ, ALCIDES. 2023. First Documented Predation Event on White-tailed Tropicbird, Phaeton lepturus, by the Puerto Rican Boa, Chilabothrus inornatus, In Puerto Rico. Caribbean Naturalist, No. 94: 6. - get paper here
  • Onary, Silvio; Annie S Hsiou 2018. Systematic revision of the early Miocene fossil Pseudoepicrates (Serpentes: Boidae): implications for the evolution and historical biogeography of the West Indian boid snakes (Chilabothrus). Zoological Journal of the Linnean Society, Volume 184, Issue 2, 5 October 2018, Pages 453–470, - get paper here
  • Rasmussen, J.B. & B. Hughes 1996. Description of some new snake species. I. [English translation of the original Danish text of T. Reinhardt 1843]. Steenstrupia 22: 13-39
  • Reinhardt, J. T. 1843. Beskrivelse af nogle nye Slangearter. Danske Vidensk. Selsk. Afhandl. 10: 233-279. - get paper here
  • Reynolds, R. Graham and Robert W. Henderson 2018. Boas of the World (Superfamily Booidae): A Checklist With Systematic, Taxonomic, and Conservation Assessments. Bulletin of the Museum of Comparative Zoology Sep 2018, Vol. 162, No. 1: 1-58. - get paper here
  • Reynolds, R. Graham; Alberto R. Puente-Rolón, Karen Kolodzaike, Tiara Butler-Smith 2014. Isolation and characterization of 23 novel polymorphic microsatellite markers from the endangered Puerto Rican boa (Chilabothrus inornatus) using paired-end Illumina shotgun sequencing. Conservation Genetics Resources 6 (1): 107-109 - get paper here
  • Reynolds, R.G.; Matthew L. Niemiller; S. Blair Hedges; Alex Dornburg; Alberto R. Puente-Rolón; Liam J. Revell 2013. Molecular phylogeny and historical biogeography of West Indian boid snakes (Chilabothrus). Molecular Phylogenetics and Evolution - get paper here
  • REYNOLDS, ROBERT GRAHAM; ROBERT W. HENDERSON, LUIS M. DÍAZ, TOMÁS M. RODRÍGUEZ-CABRERA AND ALBERTO R. PUENTE-ROLÓN 2023. Boas of the West Indies. Comstock Publishing / Cornell U Press - get paper here
  • Rivera, F. A. F. 2023. Comparison of northern and southern cave populations and foraging ecology of the Puerto Rican Boa, Chilabothrus inornatus (Epicrates, Reinhart 1843)(Reptilia: Squamata: Boidae). MSc thesis, UNIVERSITY OF PUERTO RICO MAYAGÜEZ CAMPUS - get paper here
  • Schwartz, A. & Henderson, R.W. 1988. West Indian Amphibian and Reptiles: A Checklist. Milwaukee Publ. Mus. Contr. Biol. Geol. No. 74: 264 pp. - get paper here
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
  • Sheplan, B.R., and Schwartz, A. 1974. Hispaniolan boas of the genus Epicrates (Serpentes, Boidae) and their Antillean relationships. Annals of the Carnegie Museum 45:57-143.
  • Smith H M; Chiszar D 1992. A Mexican genus of tropidopheine snakes. Bull. Maryland Herp. Soc. 28 (1): 19-28 - get paper here
  • Stejneger, L. 1904. The herpetology of Porto Rico. Rept. United States Natl. Mus. 1902: 549-724. - 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.
  • Wallach,V. & Smith,HM 1992. Boella tenella is Epicrates inornatus (Reptilia: Serpentes). Bull. Maryland Herp. Soc. 28: 162-170 - get paper here
 
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