An enemy to the tomato plant, these critters can eat about a third of a
plant in a day or two. Magically, there is a wasp that lays eggs in or on
the skin of the caterpillar. The hatching wasp larvae then feed on the
host. The white capsules contained young wasps and are now empty, given
the holes in the end. Needless to say, the critter is no longer eating!