HMMM. Here are the insect bits in particular:

1:04 - 1:08
1:11 - 1:12

(these are exact times by the video linked to above -- no leeway to either side)


Rewatching, other possible trigger-y things are dead animals (roadkill, stuffed, drying, etc.), sexual imagery and nudity, blood, religion, snakes, fast cuts, implications of racial violence (video closeup of a child at a KKK meeting, protests).