Guettarda insularis

Guettarda insularis is a species of flowering plant. It is a large shrubby tree native to Socorro Island, the largest of the Revillagigedo Islands which lie west of Mexico's Pacific coast.

Guettarda insularis is prominent in Socorro's higher-elevation forests, which occur between 350 and 850 meters elevation. Other forest canopy trees include Ilex socorroensis, Sideroxylon socorrense, and Psidium oligospermum.

The fruit of the tree is eaten by the Socorro parakeet (Psittacara brevipes).