The distinctive Hag Moth has an even more unusual caterpillar that rendered the need for its own name: Monkey Slug.
The Hag Moth is a member of the Slug Caterpillar Moth family. Many of the larvae (caterpillars) of these moths are visual oddities. Tentacle-like arms extend and reach as the caterpillar crawls, giving the appearance of a terrestrial octopus. These lobes are delicate and a few may be missing. Though other hairy caterpillars have a reputation for prickly defenses, this caterpillar does not sting. The caterpillars of this family attract more interest than the adult moths.
Hag Moths are extremely furry. Tufts of hair extend from every leg. Both genders are a dark mottled brown though males have translucent wings. Females are larger than males and have light ivory hair on their legs while males do not . Adults are rarely seen but can be found in forests, woods and fields from late spring through summer.
Scientific Name: Phobetron pithecium
Other Name(s): Monkey Slug Caterpillar
Butterfly or Moth
Size (Adult; Length): 20mm to 28mm (0.78in to 1.09in)
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Butterfly and Moth Anatomy
Antennae: Butterflies and Moths have a pair of antennae on the head used as sensors.
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.