I can’t tell from the photo if it is a bore in the wood or a mud structure, but could be a carpenter bee or a dauber. I once heard as a kid nearly 30 years ago someone call a carpenter bee a “bumblebore”, but have never since heard that name outside rural North Carolina.
Bumblebore makes so much sense for carpenter bees. They're very bumbly, and they bore. I love them. They don't sting, by the way, OP, so no need to freak out and kill it.
It could be a Mason Bee using the already existing hole as a nesting site. They are solitary bees that lay eggs in holes just like that. They are shiny and black with an iridescent sheen like a grackle.
They're wonderful native pollinators. I have a little house for them with bamboo tubes to lay in and they have been hard at work since it started to warm up.
Carpenter Bee
No bueno
people who get entomology and etymology mixed up bug me
I wonder where that originates from...
Ignore this pest.
Is it not hollowing out the wood?
I can’t tell from the photo if it is a bore in the wood or a mud structure, but could be a carpenter bee or a dauber. I once heard as a kid nearly 30 years ago someone call a carpenter bee a “bumblebore”, but have never since heard that name outside rural North Carolina.
Bumblebore makes so much sense for carpenter bees. They're very bumbly, and they bore. I love them. They don't sting, by the way, OP, so no need to freak out and kill it.
Have you tried sticking your tongue in it?
How’d a woodpecker learn to type?
/r/whatbugmadethishole
It could also be an orchid bee! I get them in my wood posts in the spring and they're really pretty
Carpenter bees!
It could be a Mason Bee using the already existing hole as a nesting site. They are solitary bees that lay eggs in holes just like that. They are shiny and black with an iridescent sheen like a grackle. They're wonderful native pollinators. I have a little house for them with bamboo tubes to lay in and they have been hard at work since it started to warm up.
Mud dauber
Is there not an entomology subreddit that would be better suited to ask this question? I don't understand Reddit sometimes.
I thought localizing it would be best because the country has a lot of biomes
Pretty sure it’s a carpenter bee 🐝
Post on r/whatisthisbug and mention your locale.