Carebara diversa, is a species of marauder ant widely distributed throughout Asia. Wikipedia
This species is also well known for its large variation in the size of the individuals. The smallest workers measure only 2 to 3 mm while the largest super majors can be nearly 20 mm
The most notable thing about these ants is the habit they have of sending out thousands of workers on long ‘swarm trails’ hunting for food. In mature colonies these hunting swarms can be 10,000 plus strong and resemble the famous army ants of the Amazon – attacking and consuming anything edible in their path.
Spotted the ‘Giant’ about 20mm at Choa Chua Kang Park.