June 23

Yellow-necked Caterpillar Moth Walnut Caterpillar Moth Two closely related and similarly-sized moth species are currently active. While (to most people) both may appear “the same”, each is visibly different. The outer forewing margins of the yellownecked caterpillar moth are distinctly scalloped while those of the walnut caterpillar moth are not. The forewings of the yellownecked caterpillar moth are cinnamon brown and marked with dark irregular lines. Those of the walnut caterpillar moth are dull brown to chestnut brown, and crossed with dark lines.