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Small yellow triangle-shape temporal patch at lower part of cheek among varoises

by touton - dicembre 22nd, 2009.
Filed under: Francia del Sud, In natura, Testudo hermanni.

7 Responses to Small yellow triangle-shape temporal patch at lower part of cheek among varoises

  1. This yellow patch is very small if you compare to italian populations!

    If yu have some pics of plastrons I’d like to ask you about something that I think peculiar of french population: black patches on gular scales.

  2. Unfortunatelly, I am not at home untill the 3rd of january. So, I will not be able to be on my computer and to access my folders to send you additionnal pictures…. :-(
    Black patches are rather rare on varoise populations. As I mentionned on my article about varoises specificities, less than 20% of varoises have either 1 or 2 black patch(es) on gular scales. But, when existing, those black patches are on top of gulars. It is very very rare (I would say less than 5% of varoises), that a specimen has black patch at the lower side (plastron’s side) of gular scales.
    I noticed that corsican have much more often black patches on top of gulars, let’s say about 70% of the time.
    And sometimes, about 40%, they have black patches on plastron’s side gulars. Do you agree Aline ?

  3. As I told you, the size of yellow eye patches of varoises depends greatly on the age. Young and unmature specimens (under 15) have rather big yellow patches whereas very old specimens (over 30) have usually no more yellow patch. And specimens of middle age, about 15-20 (as tortoises on the 3 pictures I posted), have very small size yellow patches at the lower part of their cheeks. Size of yellow eye patches decreases quite quickly with age running.

  4. I asked you about black patches on plastron side gular scales because in several pics of specimens thought to be “Var origin” I observed this pattern I’ve quite never found in any other italian Thh population.

    I think we can usually find this pattern on boetgeri specimens, but it’s also present in the Testudo hermanni Holotype described by SCHOEPFF (1793) and recently found by R.BOUR in the Zoological Museum in Strasbourg: when I saw the pictures of that Holotype on H.Vetter book I immediatelly found a relationship between that holotype, these black low patches and french Testudo hermanni…

    … reasonable but evidently wrong idea!!!

  5. Probably you found those black patches on plastron side of gulars on pics of Ben, Lolo or Nico. As I told you, the pictures that those guys posted are probably pictures of hybrid hermanni/boetgerie and not representative of varoises.

  6. Step by Step I understand well what you told me about!

    Now, if we wonna try to find a concluse identification role for this pattern, I think we can state that black patches on plastron side are usually found in Testudo hermanni boettgeri or well on hybrid specimens.

    Thanks Touton

  7. yes, or on alcune corsican

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