Certhiaxis

Certhiaxis is a genus of Neotropical birds in the ovenbird family Furnariidae.

Taxonomy

The genus Certhiaxis was introduced in 1844 by the French naturalist René Lesson with the yellow-chinned spinetail as the type species. The name is a combination of the genus Certhia that was introduced by Carl Linnaeus in 1758 for the treecreepers and the genus Synallaxis that was introduced by Louis [Pierre Vieillot] in 1818 for the spinetails.
The genus contains two species:

Image	Scientific name	Common name	Distribution
	Certhiaxis mustelinus	Red-and-white spinetail	Amazon Basin of Brazil and Peru; also the southern Amazon River border of Colombia and the headwaters of the Madeira River in Bolivia.
	Certhiaxis cinnamomeus	Yellow-chinned spinetail	Trinidad and Colombia south to Argentina and Uruguay