It is endemic to western Mexico and known from specimens collected in Jalisco, Nayarit, and Sinaloa.

Its dorsal surfaces have an irregular scattering of small tubercles and are colored a mottled pattern of dark green, tan, and pale orange, whereas its belly is a mottled black and white.

[1] This species is found in pine-oak woodland in the southern Sierra Madre Occidental range as well as the westernmost extent of the Eje Neovolcánico and Sierra Madre del Sur ranges.

The three type specimens were found at an elevation of 1,992 m (6,535 ft) above sea level at night, calling from low vegetation.

[1] As E. jamesdixoni is a very recently described species, its conservation status has not yet been determined and particular risks to its existence are unknown.