They live in groups, hundreds or could be thousands. Feeling threatened, the whole army will attack without delay. The pain doesn't last long with no side effect... These kerengga will pull leaves together and weave them. They live, and have hundreds of babies inside.... In younger days, we would search high and low for kerengga's den .... the eggs were super class as fishing baits. Mom's constant warnings not to venture out too far which include fishing didn't deter us much, and kerengga's stinging bite was very mild then... haha.
There was a story when we were kids, about a very naughty boy. His Dad was so angry one day that he tied the boy to a coconut tree, get a couple of kerengga's den with kerengga still inside and placed them close to the boy. They boy yell like hell!!!. We wouldn't know if the incident really took place, or it just be one of those little stories Mom love to tell as a deterrance ........
To a certain extent, kerengga is considered friendly by gardeners, because they will protect the tree they colonized from pest. But plucking fruits will be quite a task with kerengga around.
kerengga climbing up Pulai tree