Sphaerodactylus is a
genus of
geckos from the
Americas that are distinguished from other
Gekkota by their small size, by their round, rather than vertical, eye pupils, and by each digit terminating in a single, round adhesive pad or scale, from which their name (
Sphaero = round,
dactylus = finger) is derived. All
species in this genus are rather small, but two species,
S. ariasae and
S. parthenopion, are tiny, and – with a snout-vent length of about —the smallest
reptiles in the world.