People always ask me "What are wasps good for?" Wasps keep cabbage loopers from eating your kale. Here's photographic proof. This yellow jacket will chow down on this looper so that she can regurgitate it as baby wasp pablum. As you can see, wasps do have some hairs, but they don't have the velvety branched setae that bees evolved as they changed from meat eaters to vegetarians. Wikipedia says wasps are sometimes misidentified at "meat bees". Bees are actually more like "vegan wasps".