Nichols least gecko, Nichol's dwarf sphaero, Puerto rican crescent sphaero
Sphaerodactylus nicholsi, also known commonly as Nichols least gecko, Nichol's dwarf sphaero or the Puerto Rican crescent sphaero, is a species of lizard in the family Sphaerodactylidae. The species is endemic to Puerto Rico.
The specific name, nicholsi, is in honor of American ichthyologist John Treadwell Nichols.
The preferred habitats of S. nicholsi are forest, shrubland, and marine intertidal, but it may also be found in introduced vegetation.
Sphaerodactylus nicholsi is oviparous.