von tail__ » 27. Dez 2008 23:48
I have a lot of springtails living in my formicarium with Myrmica rubra and I love to watch ants trying to catch them. The springtails are very fast and it is really hard, but one time for a hundred the ant succeeds, and considering there is a few dozen ants hunting all day long and the springtails are very numerous, they are always able to kill a few every day.
My Lasius niger colony is large enough to kill a maggot, and it is a nice show to watch the hunters calling for reinforcements, as only a large pack of these little ants can defeat such a large beast. After a few minutes the arena is full of ants heading straight to the combat zone. At least sometimes they need to work hard for their food, so they are really workers, not just eaters.
Almost every typical ant species do some hunting, but be aware that ants hunt mostly insects smaller than them, and only when the colony grows quite a bit they can kill a larger prey collectively. I think the Formica species are the best hunters, as they use sights for tracking and are very fast and agressive. And they reproduce quickly, so you can have a few hundreds in a year. I Recommend Formica sanguinea, rufibarbis or cunicularia, but fusca and cinerea also aren't bad. Camponotus ligniperdus or herculeanus can also hunt insects larger than smaller ants, but it takes a long time to have a large colony of these species.