Population:

Podarcis pityusensis

    Illa d’Encalders  (pityusensis)

Synonyms:

Lacerta lilfordi caldesiana   MÜLLER, 1928

Podarcis pityusensis pityusensis   SALVADOR, 1984

Types:

Holotype: ZSM 2226 (lost). coll. Z. KAMER, 1928.
Paratypes: ZSM 2215 (lost), 6 specimens.
Paratypes: ZBK 883 - ZBK 886.

Terra Typica:

Insel Caldés an der Nordküste von Ibiza.

Taxonomic notes:

Population extinct due to the invasive snake Hemorrhois hippocrepis (CIRER & VAN DEN BERG 2025).

Relevant taxonomic literature:

• Müller, L. (1928) -  Vorlaufige Mitteilung über einige neue Rasse der Lacerta lilfordi Gthr. von den Pityusen -  Blätter für Aquarien- und Terrarienkunde, 39: 386-388  

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• Salvador, A. (1984) -  A taxonomic study of the Eivissa wall lizard, Podarcis pityusensis Boscá 1883. -  Biogeography and Ecology of the Pityusic islands. Monographiae Biologicae. W. Junk, The Hague, 52: 393-427.  

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• Cirer, A.M. & Berg, M.P. van den (2025) -  Estimation of lizard density in Podarcis pityusensis island populations over time, with special attention to the correct naming of the islets. -  L@CERTIDAE (Eidechsen Online), 2025 [1]: 1-187.    

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  In this study we compile data regarding lizard densities of the island populations of the Ibiza wall lizard, Podarcis pityusensis, which can serve as a baseline for future research and control of the invasive snakes, and in particular the horseshoe whip snake Hemorrhois hippocrepis, in the Pityusic Islands. Special attention has been given to the correct official spelling of 96 locations of which 89 are real rocks, islets and islands. For each island a short description, toponymy, faunal and floral aspects and some herpetological history is given, and a lizard density value was assigned. The results are very disturbing, with two confirmed- and three most likely extinct island populations of Podarcis pityusensis, and we call for coordinated action.