R.EYE.R wrote:

You might have an interesting showdown between them and killer bees - hornets search and destroy bee hives for the honey. About 30 of them can completely wipe a hive. Japanese native bees has got some form of defense - they form a ball around a hornet and temperature spike inside a ball effectively kills the hornet. Imported bees has not been observed to be able to deal with it in a same manner (afaik).

"No-see-ums" - can only think of fire ants (got here the same way asian hornet got over to you) and sand flies....though, you do actually see them...
Sneaky bastards would be centipedes and moth caterpillars. The first can crawl into various places where they shouldn't be in a first place. The bite is a bit painful and produces swelling and rash. The latter are not aggressive as such, but coming in contact with them will give you skin irritation similar to allergy.

The opossums surely will do the trick. There are a species of hawk here that specialises entirely on taking down nests up in the trees - they produce hornet confusing pheromone and avoids stings.

A big concern would be them building nests under the roofs and coming in to attics through crevices. Though in Japan it is a sign of strong typhoon coming later in a year.

No-see-ums are more like gnats, they fly. You can see them but they are tiny. You will suddenly feel an annoying, minor pain and then squash a no-see-um. Too late, it got you. The next day there will be quite a bump there and it will be both tender and painful. The flesh will deteriorate, it takes about a week to recover from a bite. I suspect it is an egg laying strategy, sort of like what spiders to to flies except humans can usually reach the bitten area, which might not be true of deer and the linings of the eyes or ears.

Opossums are not native to this area, the Tarheels brought them from North Carolina for some reason, back when they moved up here to cut down trees. They've thrived here, I even have a friend a little closer to downtown who got up one morning and found one hissing at her in her kitchen. She guided it outdoors with a broom.

I guess we'll just have to wait and see what happens...

FIFTYONE PHOTOGRAPHY wrote:
The Bubonic plague ought to take care of 'em.  https://www.indiatvnews.com/news/world/ … usa-635385

Followed by swarms of flying Ants to clean up the mess.  https://edition.cnn.com/2020/07/18/worl … index.html

Murder hornets will spread the plague and eat the ants.

They will carry off human babies, screaming for Mommy.

They will build nests in Dollar Stores, making it impossible for low income people to shop.

And, they will post modeling accounts on MM since they think they are hawt.

R.EYE.R wrote:
Few days ago climbed to a waterfall in Nagano prefecture and got two of them flying around my legs...
Legged it of course as I thought for a moment I was close to their nest, but luckily they were just scouts zipping about...

Yikes!