I think this is a neat game idea. I enjoyed planning the web placements and got up to wave 13 before my eggs died.
The music, art style, theming, and gameplay feel cohesive and all contribute to building a gnarly gothic aesthetic. I think this could be polished and be a good game.
I do think being slowed down after eating bugs feels bad. Maybe it would feel better if the spider stopped altogether after eating and got a temporary speed boost right after.
It also feels bad that eating will only kill one bug even if there are multiple bugs on top of each other. I think it would feel better if every bug near your mouth gets eaten.
Great game, good job.