Cactus bug

Conspicuous dorsal, yellow stripe on the head, nearly solid yellow pronotum, and yellow veins of the forewing. General appearance is similar to the better known squash bugs (Anasa spp.) which lack the extensive yellow pronotum and the yellowish veins of the corium and clavus that starkly contrast with the generally dark hemelytra. This contrast is less apparent in other forms and species of Chelinidea. (information from BugGuide)