A detailed description and illustration of the larva of Macrothemis ultima González-Soriano is provided, based upon larvae reared until emergence. Its main features are: body dark brown, integument mostly bare, premental setae 7 3 or 8 4, ligula prominent, palpa setae 6, dorsal protuberances on abdomen well developed and high on 2–5, low, spine-like on 6–9, total length 15.8–16.5 mm. It appears more closely related to the larva of M. aurimaculata Donnelly than to others.