Though the overall color of the Ilia Underwing may be brown or gray, its flashy hindwings are bright and bold, ranging from deep fuchsia to salmon pink. Unlike many underwings, this species has two black bands that cross the hindwings instead of just one. A reniform spot with a white ring on each forewing is common though it may be less obvious on some individuals.
The caterpillar feeds on oak leaves. Ridges or bumps on each segment are contoured with black markings, accentuating their elevation. Irregular black marks also stretch along the sides of the body. The overall color of the caterpillar typically blends in well with tree bark, so it is common to find gray or brown individuals. Some, however, are mint-green, just like a lichen-covered tree trunk. The head is pale or white with a black band near the neck. The caterpillar looks chunky and rough, and its ventral (belly) side is tinted with a blush of red or pink.
General Characteristics Capability, Shape, Texture/Pattern, Benefits, Dangers
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns.
Territorial Map U.S., Canada, and Mexico
Prince Edward Is.
Butterfly and Moth Anatomy
Antennae: Butterflies and Moths have a pair of antennae on the head used for sensing.
Head: The head is home to the insect's eyes, antennae, and proboscis.
Thorax: Home to the three pairs of legs as well as vital internal organs.
Abdomen: Contains vital internal organs such as the heart(s) and reproduction facilities.
Forewing: The upper, forward wing pair used for flying.
Hindwing: The lower, rearward wing pair used for flying.
NOTE: Butterflies and Moths are part of the Lepidopteran order as they share many similarities.