Agrilus planipennis is a species of beetles in the family metallic wood boring beetles. They are native to Japan, Mongolia, South Korea, Taiwan, China, and Russia. Individuals can grow to 11 mm.
Definition: Eye-spots which may be set into a pit to reduce the angles of light that enters, to allow the organism to deduce the angle of incoming light. Lens-like structures may be present, but stemmata, unlike lens eyes, cannot form an image, either for lack of refractive power or retinal resolution.
