Summary

The main idea is to trap asian hornet.
The down part can be fill by an attractive liquide (or solid)
The diameter of the entry holes is adapted at the size of the bug.
The diameter of the holes on the top of the trap is a little bit inferior in order to retain the asian hornet and I hope is enought to let go out the rest of insects.

Please to let me know if this principle is functionable or not.