What are those things!?

So I was wandering around the industrial complex minding my own business, WHEN SUDDENLY I came upon a strange plant. I thought nothing of it first, but the plant started shooting (flies?) at me!
Those flies were sticking to me trying to immobilise me. Thankfully I managed to escape, because the moment flies started flying, a vulture appeared and tried to catch me. I couldn’t find what enemy it is on the wiki, can yall help? :D