Standing's Day Gecko

The generic name, Phelsuma, is a Latinized version of the last name of Dutch physician Murk van Phelsum. The specific name, standingi, is in honor of another physician, Doctor Herbert F. Standing of Antananarivo, Madagascar.

P. standingi is restricted to the arid southwest of Madagascar, specifically the region around Andranolaho, Sakaraha and in the Zombitse-Vohibasia National Park. This area has a unique thorn forest vegetation. The daytime temperature never drops under and between January and December, the temperature can be as high as in the shade. In July and August, the night temperature can drop to .

Strictly an arboreal and diurnal species, P. standingi lives in pairs on trees, spending a lot of time basking in the sun on the highest and well exposed branches. The males are very territorial and will fight when in the presence of other males; females have this character towards other females, a behavior which is rather rare in geckos.

P. standingi is oviparous. At a temperature of , the young will hatch after approximately 60–70 days. The juveniles measure 80 mm and reach sexual maturity after one year. In captivity, Standing's day geckos can be expected to live up to 15-20 years when appropriately cared-for.