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我查到了,好像是这个东西
Spider/Parasitic Wasp (family Pompilidae)
If there are orange/red and blue/black wasps flying over your lawn, this will usually indicate that there are grubs present, as the wasp is looking for a host to lay its eggs. So, it’s not so much the wasp that is the problem, as it will be a sign that there is lawn grubs feeding off the roots of your lawn. The great thing about these wasps is that the adults do not sting and because their larvae is a parasite of the grubs, they actually help to control the grubs.
就是说有lawn grubs了,不知道我的理解对不对 |
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