Population:

Podarcis pityusensis

    sa Galera de Tramuntana  (pityusensis)

Types:

Holotype: nonexistent

Terra Typica:

Galera.

Taxonomic notes:

This population originates from a deliberate introduction of 20 Podarcis pityusensis pityusensis from Ibiza by EISENTRAUT in 1930. According MARTÍNEZ-RICA & CIRER (1982) and VAN DEN BERG et al. (2013 unpublished data) extinct.

Relevant taxonomic literature:

• Eisentraut, M. (1930) -  Beitrag zur Eidechsenfauna der Pityusen und Columbreten. -  Mitteilungen aus dem Zoologischen Museum in Berlin, 16: 397-410.  

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• Böhme, W. & Eisentraut, M. (1981) -  Vorläufiges Ergebnis eines unter natürlichen Bedingungen angesetzten Kreuzungsversuchs bei Pityusen-Eidechsen. -  Bonner zoologische Beiträge, Bonn, 32 (1/2): 145-155.    

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  Es wird über einen 1930 angesetzten Versuch berichtet, bei dem auf einem bis dahin eidechsenfreien Felseiland (Dado Grande bei Ibiza, Pityusen) Männchen einer melanistischen und Weibchen einer grünen Inselpopulation von Podarcis pityusensis ausgesetzt wurden. Die Untersuchung von sechs fünf Jahre später gefangenen Tieren ergibt, dass die Vermischung zu erhöhter Variabilität und gesteigertem Größenwuchs geführt hat. Eine erneute Kontrolle dieses noch vorläufigen Ergebnisses wird angeregt.

• Martínez-Rica, J.P. & Cirer, A.M. (1982) -  Notes on some endangered species of Spanish herpetofauna: I. Podarcis pityusensis (Boscá, 1883). -  Biological Conservation, 22: 295-314.    

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  The status of the populations of Podarcis pityusensis on about 70 islets and small islands around Ibiza and Formentera (Balearic Islands) is examined, using data from our own observations, and, to a lesser amount, other publications. Lizard populations were found on 43 islets, but data are lacking for another 13. Only 10 sites (18 %) have abundant and well-maintained populations. In 13 localities (23%), there is no geographic isolation between the populations, or this isolation is very poor and incomplete. The high probability of populations mixing, or actual observation of this mixing, in 19 islands (34%) is indicated. Human pressure on lizard populations is strong in 14 cases (25 %). And finally, 18 populations (about one third) may be considered highly endangered or already extinct by elimination or genetic mixing with other populations. Among the subspecies which became extinct through mixing are P.p. miguelensis, P.p. subformenterae, P.p. algae, P.p. sabinae and P.p. grueni. The need for adequate protective measures aimed at the conservation of the remaining populations is emphasized.

• 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.