Not insects... but as insects-to-be this seems like the best place to ask: what on earth is going on here? As caterpillars don't lay eggs (do they?), I assume they're not his (or hers). Is it eating them? Or just happened to be passing?
In case it's at all relevant, that's an onion leaf they're on.
Posts
The Small Whites like Purple Loosestrife.
I misidentified the previous Shieldbug images, they were in fact Hawthorn Shieldbug.
Don't think I'll even bother
I play with plants and soil and sometimes it's successful
☺️
In case it's at all relevant, that's an onion leaf they're on.