Polyrhachis armata (Spiny Hook Ant) 
 
The Spiny Hook Ant is a large, aggresive and unusual species of arboreal ant that inhabits the tropical rainforests of South East Asia. Specifically weaving nests under the surface of leaves in the upper canopy layers.
 
Queens of this species measure an impressive 15mm and workers can reach upto 12mm in size. Their morphology resembles that of an "armed body". Combined with its matt black colouration, it's truly a sight to behold.
 
Unlike other species of Polyrhachis, these are monogynous and form rather small colonies formed of a few hundred workers.
 
It is illegal and strictly frowned upon to release any non-native ants into the wild.