We follow Nussbaum et al.
(2000) that all subspecies of Phelsuma modesta are
invalid and actually are colour variations. In their view,
there is only a single southern Phelsuma with a dark
lateral stripe, subequal subcaudal scales, smooth ventral
scales, and sexual dichromatism. This is Phelsuma modesta,
which includes all former subspecies; Phelsuma modesta
leiogaster and Phelsuma modesta isakei.