cockroach egg case, or ootheca, is an oblong capsule that can vary in color from light tan to dark brown. The texture is typically hard and somewhat leathery, providing a protective environment for the developing eggs inside. The size of an ootheca can range from 5 to 9 millimeters, depending on the cockroach species.
The ootheca often has a distinct ridge along one side, which helps differentiate it from other small objects like beans or seeds. This ridge is where the egg case will split open when the nymphs are