What Is Insect Poop Called

Insect poop is called “frass,” and it can actually be a useful source of information for entomologists and biologists. New species have even been found in frass.

What is a caterpillar poop called?

Caterpillars need to eat a lot before going into their pupa or chrysalis stage where they rest before they turn into an adult butterfly. With all that munching and eating some of the food is not used and needs to come back out. That part is called frass, or as you may like to call it, poop.

What is bug frass?

Frass is excrement from the digestive system of various pests. This material contains what the insect has been eating, and the term is often associated with wood-eating pests like termites or carpenter ants. Insect frass is a visible sign of an infestation, but there are different types of frass.