Zeria serraticornis is a small insect belonging to the family Cerambycidae. It is commonly known as the sawtooth longhorn beetle due to the distinctive serrated antennae of the males. This species is found in various parts of North America and is known to feed on the bark and wood of various tree species. The adults are typically black or dark brown in color and can reach a length of about 10-15 millimeters.