Acromyrmex ameliae differs from Acromyrmex insinuator (another social parasite) not only by its size and color (brown dark against yellowish-orange) but as well it does not present a single strong median ruga extending from the central ocellus to the level of the posterior borders of lateral ocelli, like A. insinuator.
•
Morphometrically, the Acromyrmex ameliae queen is not a simple miniature of its hosts' queens, like Myrmica microrubra and its host Myrmica rubra.
•
The species can be distinguish from the host using its propodeal spines: they are straight and laterally compressed unlike subterraneus subspecies where they are slight to strongly curved and conical.