Many weevils are sitting low on their host plants and drop quickly when disturbed. With a conventional beating sheet or a sweep net, it is difficult to get those low-sitting weevils from herbaceous vegetation.

Another very important aspect is that it is impossible to associate weevils with their host plants when using a sweep net. When collecting using a frisbee disc, only one or a few plant species are sampled at once.

A frisbee is sturdy and can be pushed quickly beneath vegetation without getting entangled. It works best to search weevils selectively on specific host plants. Searching a larger area is quickly exhausting compared to using a sweep net, but I think many weevils are sitting too low on the plants for sweep netting.

Perhaps a plastic tray with a straight edge could be used instead.

I learned about the advantages of using a frisbee from Herbert Winkelmann, while the idea of wearing equipment attached to a waist bag came from Marc Hoffmann.