Here's why:
* Diet: Blister beetles primarily feed on plants, particularly flowers and leaves. They are known to be particularly fond of legumes like alfalfa and clover.
* Specialization: Some species of blister beetles are even specialized to feed on specific plants. This indicates their herbivorous nature.
While they might occasionally consume small insects, this is not a significant part of their diet. Their digestive system and body structure are adapted for processing plant matter, not animal protein.