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Microlophus pacificus (STEINDACHNER, 1876)

IUCN Red List - Microlophus pacificus - Least Concern, LC
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Higher TaxaTropiduridae, Iguania, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Common Pacific Iguana 
SynonymTropidurus (Craniopeltis) pacificus STEINDACHNER 1876
Leiocephalus pacificus — GÜNTHER 1877
Tropidurus pacificus — BOULENGER 1885: 173
Tropidurus abingdonensis BAUR 1890
Tropidurus abingdonii (sic) BAUR 1890 (fide BOULENGER 1891)
Tropidurus pacificus — HELLER 1901: 83
Tropidurus pacificus — VAN DENBURGH & SLEVIN 1913
Microlophus pacificus — FROST 1992: 48
Microlophus pacificus— SWASH & STILL 2000 
DistributionGalapagos: Pinta (Ecuador)

Type locality: “Indefatigable ?” (= Isla Santa Cruz) and Bindloe (= Isla Marchena), Galapagos.  
Reproductionoviparous 
TypesType: unlocated (fide TORRES-CARVAJAL 2001); NMW fide Steindachner 1876
Syntypes: USNM 14966-15001, INHS (= UIMNH) [abingdonensis] 
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 24 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy: BOULENGER 1891 considered Tropidurus abingdonensis BAUR 1890 as synonyms of Microlophus pacificus

BOULENGER (1891) gives the author as PETERS 1871.

The types are not located fide TORRES-CARVAJAL (2001). The SYNTYPE of abingdonensis are UIMNH 40749 (USNM 14998).

Reference images: see Uetz et al. 2024 for high-resolution reference images for this species. 
EtymologyNamed after Latin pacificus, belonging to the Pacific (ocean). [“...Insel Indefatigable (?) und Bindloë nach Dr. Habel’s brieflicher Mittheilung...“]. (from Esteban Lavilla, pers. comm., May 2024) 
References
  • Arteaga, A.; Bustamante, L.; Vieira, J. 2024. Reptiles of Ecuador. Khamai Foundation & Tropical Herping, 1073 pp. - get paper here
  • Baur, G. 1890. Das Variieren der Eidechsen-Gattung Tropidurus auf den Galapagos Inseln und Bemerkungen über den Ursprung der Inselgruppe. Biol. Centralblatt. 10: 475-483. - get paper here
  • Boulenger, G.A. 1885. Catalogue of the lizards in the British Museum (Natural History). Vol. 2, Second edition. London, xiii+497 pp. - get paper here
  • Boulenger, George A. 1891. On the Galapagos lizards of the genus Tropidurus. Ann. Mag. Nat. Hist. (6) 7 (42): 501-503 - get paper here
  • Carpenter, Charles C. 1970. Miscellaneous notes on Galapagos lava lizards. Herpetologica 26 (3): 377-386 - get paper here
  • Frost, Darrel R. 1992. Phylogenetic analysis and taxonomy of the Tropidurus group of lizards (Iguania: Tropidurudae). American Museum Novitates (3033): 1-68 - 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
  • Heller, Edmund 1901. Papers from the Hopkins Stanford Galapagos Expedition, 1898-1899. WIV. Reptiles. Proc. Washington Academy Sci. 14: 39-98 - get paper here
  • HervÍas-Parejo, Sandra; Ruben Heleno, Beatriz Rumeu, Beatriz Guzmán, Pablo Vargas, Jens M Olesen, Anna Traveset, Carlos Vera, Edgar Benavides, Manuel Nogales, 2019. Small size does not restrain frugivory and seed dispersal across the evolutionary radiation of Galápagos lava lizards. Current Zoology, Volume 65, Issue 4, August , Pages 353–361, - get paper here
  • Jackson, M. H. 1985. Galapagos: a natural history guide. University of Calgary Press, Calgary, Canada. 283 pp.
  • Lopez,T.J.; Hauselman,E.D.; Maxson,L.R. & Wright,J.W. 1992. Preliminary analysis of phylogenetic relationships among Galapagos Island lizards of the genus Tropidurus. Amphibia-Reptilia 13: 327-339 - get paper here
  • Steindachner, F. 1876. Die Schlangen und Eidechsen der Galapagos-Inseln. Festschr. zool.-bot. Ges., Wien 1876: 303-329 - get paper here
  • Swash, A. & Still, R. 2000. Birds, Mammals and Reptiles of the Galapagos Islands. Pica Press, 168 pp.
  • 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
  • Torres-Carvajal, O. 2001. Lizards of Ecuador: Checklist, Distribution, and Systematic References. Smithsonian Herp. Inf. Serv. (131): 1-35 - get paper here
  • Uetz, P.H.; Patel, M.; Gbadamosi, Z.; Nguyen, A.; Shoope, S. 2024. A Reference Database of Reptile Images. Taxonomy 4: 723–732 - get paper here
  • Van Denburgh, J., and J. R. Slevin 1913. Expedition of the California Academy of Sciences to the Galapagos Islands, 1905-1906. IX. The Galapagoan lizards of the genus Tropidurus with notes on iguanas of the genera Conolophus and Amblyrhynchus. Proc. Cal. Acad. Sci. (ser. 4) 2: 132-202. - get paper here
 
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