Eirenis occidentalis RAJABIZADEH, NAGY, ADRIAENS, AVCI, MASROOR, SCHMIDTLER, NAZAROV, ESMAEILI & CHRISTIAENS, 2015

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Higher Taxa	Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names
Synonym	Eirenis (Pseudocyclophis) occidentalis RAJABIZADEH et al. 2015 Cyclophis persicus ANDERSON 1872 (part.) Contia persica persica — TERENT ÉV & CHERNOV 1965 Eirenis occidentalis — WALLACH 2025
Distribution	SE Turkey (E Taurus Mountains and foothills), through in W Iran (Kermanshah) Type locality: Between Diyarbakır and Siverek, 48 km west of Diyarbakır (37°49′12.3′′N, 39°37′58.5′′E), Sanlıurfa Province, Turkey (Fig. 2 in RAJABIZADEH et al. 2015). Elevation 1100 m a.s.l.
Reproduction	oviparous (not imputed, fide Zimin et al. 2022)
Types	Holotype: ZDEU 136/2005, Adult male, legit. I ̇. Baran, Y. Kumlutas, Ç. Ilgaz, and A. Avcı, 01.v.2005.
Diagnosis	Diagnosis (n=23): Eirenis occidentalis sp. nov. is differentiated from all other congeners by having the unique combination of 186–213 ventrals in males and 204–224 in females; 46–59 subcaudals in males and 42–58 in females; ratio of the tail length over total length 13.43–19.49 in males and 13.05–18.99 in females; usually seven, rarely eight, infralabials; unicoloured dorsum, anterior dorsal scales without dark base. (Rajabizadeh et al. 2015) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data. However, these details, e.g. detailed descriptions (about about .74 pages) are available for collaborators and contributors. Please contact us if you need any of this material.
Comment
Etymology	The name ‘occidentalis’ (Latin: ‘western’) indicates the westernmost known distribution of the taxon amongst the known species within the subgenus Pseudocyclophis.
References	Anderson, J. 1872. On some Persian, Himalayan, and other Reptiles. Proc. Zool. Soc. London 1872: 371-404 - get paper here CANDAN, Kamil; Serkan GÜL; Yusuf KUMLUTAŞ 2018. Locality Records for Eirenis occidentalis (Rajabizadeh, Nagy, Adriaens, Avcı, Masroor, Schmidtler, Nazarov, Esmaeili & Christiaens, 2015) and Eirenis punctatolineatus (Boettger, 1892) (Squamata: Colubridae) from eastern Anatolia (Turkey). Biharean Biologist 2018: e181304 Kamali, Kamran 2020. A Field Guide to the Reptiles and Amphibians of Iran. Edition Chimaira, Frankfurt am Main, Germany (www.chimaira.de). 574 pp. Rajabizadeh, M. 2018. Snakes of Iran. [in Farsi] Tehran: Iranshenasi, 496 pp. [2017 ?] - get paper here Rajabizadeh, Mahdi; Zoltán T. Nagy, Dominique Adriaens, Aziz Avci, Rafaqat Masroor, Josef Schmidtler, Roman Nazarov, Hamid Reza Esmaeili and Joachim Christiaens 2015. Alpine–Himalayan orogeny drove correlated morphological, molecular, and ecological diversification in the Persian dwarf snake (Squamata: Serpentes: Eirenis persicus). Zoological Journal of the Linnean Society 176 (4): 878-913 [2016], DOI: 10.1111/zoj.12342 - get paper here Terentjev, P. V. and Chernov, S. A. 1965. Key to amphibians and reptiles. 3rd edition. Translated from Russian. Israel Program for Scientific Translations Ltd., Jerusalem. Wallach, Van 2025. HISSS -- Herpetological Investigations: Systematic Serpentes Sourcebook. Deep Science Publishing - get paper here Yıldız MZ. 2020. Herpetofauna of Kilis Province (Southeast Anatolia, Turkey). Amphibian & Reptile Conservation 14(2) [General Section]: 145–156 (e242) - 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
External links	https://www.facebook.com/groups/stshc/posts/345878297636775 Google images

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