Phelsuma grandis Giant Madagascar Day Gecko
Raxworthy et al split this species from Phelsuma madagascariensis in a 2007 journal article.
Ankarana Special Reserve, Diana region, MadagascarMay 4, 2007
Giant Madagascar Day Gecko (Phelsuma grandis)
I knew Ankarana was going to work out well gecko-wise from the moment we arrived at the small entrance station. While our guide John went in to pay our fees and chat, we went to visit a small porta-potty-ish bathroom. On one side of the bathroom was a house gecko (either Hemidactylus mabouia or Hemidactylus frenatus, but I didn't get a great look). On the front of the bathroom was a nice Geckolepis maculata. And on a tree a few feet away was this, my first Phelsuma grandis.

Here is a list of all the reptiles and frogs I saw on this 2007 trip to Madagascar.

Chez Robert grounds, Diana region, MadagascarMay 5, 2007
Giant Madagascar Day Gecko (Phelsuma grandis) Giant Madagascar Day Gecko (Phelsuma grandis) Giant Madagascar Day Gecko (Phelsuma grandis)
Chez Robert comprises a group of about ten bungalows, created more or less in the local style. These large geckos were patrolling the walls and roofs of most of them. The photo of the third gecko (who was known as "Bathy" for his hangout on the outside of the bathroom) was taken by my sister Mary.
Jardin Vanille grounds, Nosy Komba, Diana region, MadagascarMay 6, 2007
Giant Madagascar Day Gecko (Phelsuma grandis) Giant Madagascar Day Gecko (Phelsuma grandis) Giant Madagascar Day Gecko (Phelsuma grandis)
The giant day geckos glowed bright green on the walls, on the roofs, and even on the large pieces of gecko artwork of the Jardin Vanille, where we stayed for about a day.
Akanin'ny Nofy, Atsinanana region, MadagascarApril 28, 2023
Giant Madagascar Day Gecko (Phelsuma grandis)
This species is native to extreme northern Madagascar. A related species, P. madagascariensis is found along the east coast. So these should be P. madagascariensis by location, but the details of appearance match P. grandis, so it seems this is another of the many non-native species found on the grounds of Palmarium.

Here is a list of all the reptiles and frogs I saw on this 2023 trip to Madagascar.

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