Entomology (Study of Bugs)/Borers
M Philip Shook wrote at 2006-06-18 15:29:54
I agree the critters fly. Their hole in the brick (not mortar) looks to perfect to have been already there. I'll try to catch one with my bug vacuum. Corpus Christi TX
Kiki wrote at 2008-09-15 09:35:47
I am from Queensland Australia. I had a similar problem just this year. It turned out to be what they call 'Mason Bees' or 'Mortar Bees'. Apparently you can't get rid of them. Pesticides don't repel them or kill them (if applied to the brickwork anyway). So the only thing you can do is continually monitor the brickwork and repair/seal their little nests. Hopefully then they'll get the picture that it's not a good place. It's been three months of patching for me and I'm not sure if I've scared them off or it's just not nesting season!
Zelowyn wrote at 2010-05-08 05:45:15
Well add a second time of hearing of this in America to your stats. I live across the river from Louisville KY and I have a little smaller than pencil size holes in the MORTAR only on my brick home. The 'bug' I have seen around them are small, frail black looking waspish type creatures. After laying their eggs along with whatever else they put mud in the hole.
CD wrote at 2010-06-22 18:21:49
We live in South Western Ontario and have the same problem. Small, drill holes into our stone and mortar. We haven't seen anything going into or out of these holse and I have been searching the web too but with no luck. I would like to know any info that anyone might have on this puzzling bug. Thanks ~
demthe wrote at 2015-04-18 17:05:49
I also have an insect making holes in my bricks in Pennsylvania. They look like a bee?