Adela thorpella is a moth of the Adelidae family or fairy longhorn moths. It was described by Powell in 1969. It is found in California.
The length of the forewings is . The forewings are olivaceous-bronze, reflecting metallic brass, at times overlaid with pale yellowish scales and either without markings or (more usually) at least a trace of a white spot pattern. The hindwings are brown, faintly reflecting purplish.
The species is named for Robbin W. Thorp.