What insect is likely to have made this hole?

Asked May 3, 2017, 10:13 AM EDT

I noticed several similar holes in a flower bed which abuts our house. There are no ants scurrying around the holes. Could they be the holes of solitary bees?

Baltimore County Maryland

3 Responses

Our entomologist says this looks like an ant hill, hot the entrance hole of a digging bee.

ECN

Never have I seen an ant around the holes. When I messed up the first hole deliberately, no ants tried to save it.

They may have moved on for whatever reason.

cm