Good bit of fun, and I'm always in support of feeding a hungry frog!
Love the style, the visuals are clean and easy to take in; you've nailed the speed of the incoming bugs to ensure they remain readable while moving at a decent speed.
I'd love to see some more restriction placed on how often you can eat, as you can currently survive forever by spamming at a fixed location. You could support this reduced speed with maybe a power-up of some kind on cooldown (like freeze the bugs or allowing rapid-fire for a few seconds).