You have my gratitude for your feedback, and I must admit for your approval as well.
I had yet to imagine Wawsps taking herbivores- I'd taken for granted that Wawsps attack other predators, mainly- and I'd like to agree, but for that Wawsps in numbers are so powerful that any ecosystem near a Wawsp nest would be derived bare shortly, denying the herbivores a chance to behave.
I like your idea of docile creatures rendering a challenge in their own right. Your "scuttlebug" idea is interesting and unique, and serves that idea well.
I had yet neglected to even consider the Wawsp larvae. I've only managed to defeat the Wawsp Queen once.