The Streak-throated Hermit occurs in the Amazon region of northern South America. It has pale green-gold upperparts, a black-streaked throat, and long central tail feathers with white tips.
The upperparts are pale green with golden reflections and the head is brown. The throat is black-streaked, the breast and belly are grey brown, and the long central tail feathers are bronze-green with white tips.
It inhabits humid Amazon forest, várzea, river islands, and semideciduous forest. It feeds mainly on flower nectar and also takes small arthropods.
An extinction-risk assessment has not been added yet.