Small but Mighty

When I was looking for a lime butterfly, a small
movement beside me caught my eye. It was a
spider. One of the most lovely spiders that I have
seen. Again, I am not a spider expert, so I need
some ID for him.

Although he was small, he often crawled up onto
the wall, waited, then pounced on a passing weaver
ant, then darted away. I think he is trying to catch
the ants, thinking they are some other insect,
only realising they are dreadful weaver ants
later on.

This is my first serious attempt to spider
photography, so I hope it is a good one. =)