When you encounter blade wasps, you ether want to avoid them or kill them. To avoid there are two options. One is to stay in the water and another is to build a shelter. Make it a 2x2 and don’t touch the walls or else they will attack. To kill you need a tame, some will get attacked and some won’t. Like how a rapter won’t get attacked but a iguanadon will. Stegos, carnos, and blood stalkers won’t get attacked ether. I suggest to find out which creatures will and won’t get attacked before exploring. If your on a Dino that can’t get attacked and you decide to fight, the blade wasps won’t care.