A good (or bad) thing about moth traps is that they attract a wide range of insects and other invertebrates. Most of these are small flies that pass by unnoticed - unless you are a dipterist. Occasionally there is something that is interesting like ladybirds, and even the odd butterfly, dragonfly or damselfly. However, they also attract some things that I find to be a pain in the arse for one reason or another. When I can be bothered, I will highlight one or two of the most annoying ones.
Mothing Villain No. 1 has to be the Cockchafer. Great big bumbling twats these are - especially when sitting around a sheet. If one hits you on the head you know about it. But the most annoying thing is that after chucking it well away from the light, it is back within seconds. They are clearly stupid.