My personal favorite is probably Massospora Cicadina, a parasite that infects cicadas. This video is pretty educational in that department and the whole channel is high quality: https://www.youtube.com/watch?v=mSmD43tS9O0

Or Entomorphthora muscae, it's a fungus that infects the common house fly. It causes the fly to seek high ground, like high up on a window perhaps, and wait there until it dies. Then the fungus produces tons of spores which are released, and the increased elevation of the fly results in a higher chance of success in infecting more flies.

Then there is also the entire genera of Cordyceps fungi, which most people have probably heard of.

Not to mention this parasitic worm that infects crickets and causes them to seek water and jump in: https://www.youtube.com/watch?v=D7r1S6-op8E

My personal favorite is probably Massospora Cicadina, a parasite that infects cicadas. This video is pretty educational in that department and the whole channel is high quality: https://www.youtube.com/watch?v=mSmD43tS9O0

Or Entomorphthora muscae, it's a fungus that infects the common house fly. It causes the fly to seek high ground, like high up on a window perhaps, and wait there until it dies. Then the fungus produces tons of spores which are released, and the increased elevation of the fly results in a higher chance of success in infecting more flies.

Then there is also the entire genera of Cordyceps fungi, which most people have probably heard of.