The Dusky Clearwing (Paranthrene tabaniformis) is a species of moth in the Sesiidae family.
This species has not been seen since 1924, so is presumed extinct, though the use of pheromones could rediscover it. This species forewing is not clear as other clearwing species, and it is partially dusky brown. The abdomen is dark blue with three yellow stripes, the thorax is dark blue with four yellow dots where the wings join. The head has a yellow bar, and the legs are yellow and dark blue.