The Yellowish Flycatcher is marked by its yellowish belly and a pale eye-ring that broadens behind the eye. In Costa Rica, it uses the canopy and edges of moist mountain forest.
Adults have greenish-olive upperparts, dark wings with buff-to-olive wing-bars, and a pale yellow eye-ring that is broader behind the eye. The belly is yellow and the breast is strongly ochre-tinged. Juveniles are browner above, with broader, brighter wing-bars.
In Costa Rica it lives in the canopy and edges of cool, moist montane forest, secondary forest, and tree plantations. It is usually solitary after breeding and seldom joins mixed-species flocks. The account reports March-to-June breeding, two or three eggs, and 17 days of incubation by the female.
Adults have a black upper bill, a flesh-orange lower bill, and grey legs.
An extinction-risk assessment has not been added yet.