Notophthalmus - noto, Latin for back and ophthalmus, the Latin for eye; referring to the spots (eyes) on the back of this amphibian

viridescens - from the Latin word viridis meaning green which refers to the usual greenish colour of this species

Toxic newt, especially in eft form.

The common name is derived from the red-spotted appearance of this newt. The red-spotted newt's juvenile stage is terrestrial, while the egg, larvae and adults are aquatic. The terrestrial form is called the eft. There are four recognized sub-species, two of which occur in Canada: the eastern red-spotted newt, Notophthalmus viridescens viridescens and the central newt, Notophthalmus viridescens louisianensis.