Leptogenys (of this location) broadly falls under two types (categories or groups) one which is an above ground forager and the other a mostly subterranean forager. The above ground species and are fast running with proportionately longer limbs and a slimmer body (longer and narrower overall) and typified by a broader petiole node profile. The other type or group are mostly subterranean and typically has relatively broader and larger heads and slightly shorter legs.
Leptogenys diminuta is a fast running mainly nocturnal ant with 'slippery' feet. The standing body length from tip of mandibles (when closed) to tip of abdomen is around 6mm. Some species of this genus exhibit 'army' ants characteristics with a considerably larger nest numbers and a more formidable and larger head proportionately to its body and are much more aggressive.