Berg, M.P. van den & Zawadzki, M. & Kroniger, M. (2015) -  Spring 2015 - Herpetological trip to Ibiza (Spain). -  L@CERTIDAE, 2015 [4]: 56-89.     

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This is our fifth report in a series on our whereabouts while collecting data for a future revision of the present subspecific order of the endemic Balearic sisterspecies Podarcis lilfordi (GÜNTHER, 1874) and Podarcis pityusensis (BOSCÁ, 1883), which data are stored in our free accessible database at www.pityusensis.nl (VAN DEN BERG & ZAWADZKI 2011 ; VAN DEN BERG et al. 2013 ; VAN DEN BERG et al. 2014a ; VAN DEN BERG et al. 2014b). During this trip from the 9th of May until the 23rd of May 2015, we were able to collect data on a few mainland Ibiza locations, as well as the following adjacent islands: Punta Galera, Es Canaret, Illa de la Xanga (Sal Rossa), Pouet de Ses Illetes, Formentera, Purroig, Es Vedrà, Rates, Malví Pla (North), Malví Rodó (South), S’Espardell, Calders, Penjats and Ses Margalides. We continue with the ventral coloration as a possible determining key as introduced in our 2014 trip report (VAN DEN BERG et al. 2014b). Images of the anal shields are presented of each lizard for purposes of illustration.

Eisentraut, M. (1949) -  Die Eidechsen der spanischen Mittelmeerinseln und ihre Rassenaufspaltung im Lichte der Evolution. -  Mitteilungen aus dem Zoologischen Museum in Berlin, 26: 5-225.  

Kroniger, M. & Zawadzki, M. (2002) -  Ein Beitrag zur Nahrung der Pityuseneidechse, Podarcis pityusensis (Boscá, 1883). -  Sauria, 24: 27-33.    

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Observations on Podarcis pityusensis consuming herbivorous food on Eivissa and the surrounding islands are summarized and compared with the existing literature. The advantages of a herbivorous diet on small islands is briefly discussed.

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.  

Salvador, A. (1986) -  Podarcis pityusensis (Boscá, 1883) Pityusen-Eidechse. -  In: Handbuch der Reptilien und Amphibien Europas. Band 2/II Echsen III (Podarcis). Aula verlag, Wiesbaden: 231-253.  

Salvador, A. (2006) -  Lagartija de las Pitiusas – Podarcis pityusensis (Boscá, 1883). -  En: Enciclopedia Virtual de los Vertebrados Españoles. Carrascal, L. M., Salvador, A. (Eds.). Museo Nacional de Ciencias Naturales, Madrid.  

Viada Sauleda, C. (2021) -  Llibre Vermell dels Vertebrats de les Illes Balears. -  Conselleria de Medi Ambient i Territori. Govern de les Illes Balears. Quarta edició: març, 2021.