I have to assume that any vacuum that can suck up dust and dirt reasonably well will suck up insects reasonably well. I've used a Dust-Buster on leaf-footed bugs, and they work fine. A more powerful vacuum will just end up tearing foliage. DO NOT use a shop vac for this purpose.

Works great for flies, etc. in my kitchen.

I use a heavy duty Dust-Buster for potato beetles. It doesn't work well for the larva unless they are large but I'm satisfied with the results on the beetles. I suck up at least 1000 a day . I recharge it four times a day and dump the beetles into a soapy bucket of water when emptying. It will also work on Japanese beetles. They are on my potato leaves as well.

I have used a wide tape. 2-3in wide will work fine. Just cut a piece long enuff to wrap around 4 of your fingers with the sticky side out. Use what you have on hand to start whether duct tape or painters tape.

It will work for the insects and any eggs you see. I doubt any vacuum will work on eggs w/o damaging the leaves.

Just tried it with my Bissel 'magic vac' (1.2 amp version), worked okay with white flies.