In March 2012, the full species description was published. The species is named after Garuda, the national symbol of Indonesia, a giant bird-like creature.
Males of one morph are about 3.3 cm (1.3 in) long, with very large jaws. Their elongated mandibles are almost as long as their forelegs. Males of another morph and all females have proportionally smaller jaws and are overall smaller at about 2–2.5 cm (0.8–1.0 in), but still larger than other species in the subfamily. Both sexes are shiny black with black wings. It is a solitary predator of other insect species.