What is a "gallfly"?

A gallfly, also known as a gall wasp, is a type of small insect that lays its eggs on plants, causing abnormal growths called galls to form. These galls serve as protective shelters for the developing larvae, and once they hatch, the larvae feed on the gall tissue. Gallflies are known for their ability to induce a variety of gall shapes and sizes on different plant species, and they play a role in plant ecology and interactions with other organisms.