D. variabilis may refer to: Dalaca variabilis, a moth species found in Chile Dendrobates variabilis, a frog species endemic to Peru Dermacentor variabilis, the American dog tick, a tick species found in North America Diplolepis variabilis, a plant species in the genus Diplolepis Donax variabilis, a mollusc species found on the east coast of the United States from Virginia to the Caribbean