Melanocytic Nevus. Difference between a Birthmark, Mole and Nevus Stock Vector Illustration of growth, epidermal: 104955303 Drosophila are hosts to the first described parasitoid wasp of adult flies Nature Innate Immunity in Insects: The Lights and Shadows of Phenoloxidase System Activation An acral nevus is a benign melanocytic lesion found on the palms and soles. Dermoscopically, it most commonly shows the parallel furrow pattern, where pigmentation follows the furrows of the skin markings.