The western Yellowjacket is 3/8 to 5/8 of an inch long and are hairless. They are yellow and black in color with an abdomen that is blunt on the anterior side.
Western Yellowjackets are social insects who’s colony dies off every fall, but fertilized queens will overwinter. Queens start new colonies every spring that will grow throughout the summer months.
Their nests can be found in old rodent burrows, holes, structural voids, etc.