I noticed these burrows on my lawn. The holes are 1/2”. Pests? If so, what kind?
FWIW I live on Long Island, NY.
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These are probably cicadas, or perhaps emerging bees or other insects. The female lays eggs and covers them up, then the insect goes through the larval stages underground, finally to emerge as adults when they dig themselves out. Very inconsiderate to leave such piles of subsoil, however.
Clemson U has an interesting fact sheet on holes in lawn areas.