Good feedback! Initially the spider's hitbox was much larger, but we found that it was too easy to grab bugs from other routes, and made it too easy to collect everything. We ended up revamping the collision system so that you only collected things that were specifically on your route -- but as you noticed, maybe that doesn't gel so well with the current sizing. I think future revisions would involve a lot of fine tuning with regard to size, speed, distance, and camera zoom.
Thanks so much for leaving a thoughtful comment!