I meant bugs as in beetles, scorpions and spiders ahahaha. (all have DoT attacks in dd - acid, poison & bleed and...i think the t6 spiders still have poison? not sure, but certainly bleed, respectively.)
But no, stygian scoprion venom is not preventable - Greater Cure Posion/the cure poison spell line goes up to t5 and prevents t5 poison, but stygian scoprion is t6 and so is not stopped by the cure poison spells. (and i also know that not only from the description of the effect, but i have poison immunity effect from the spell up for most of the time because i still am working on purifier title, and it has made...0 impact on sytigan scorpion poison xD)