To collect bugs put them in any sealable container. I like to use a 50 or 15ml conical with a few small holes in the lid but I've also used clean mason jars or the disposable coffee cups at conferences. In my experience live bugs work best. If possible record the species of insect, the location of collection, the date of collection, and the host plant if there is one. If you aren't sure you can always take pictures of the bug and the plant to identify later. t