This caterpillar has stinging hairs that are to be avoided. The adult moth is actually called the Saddleback Caterpillar Moth, hence the repetition of the word caterpillar.
Acronicta hastaThis is also known as the Speared Dagger Moth.
Acronicta longa This is a stinging caterpillar.
Actias lunaThis is a closeup of the eyepot found near the leading edge of each of the luna moth's wings. They may startle birds or direct them to peck at a less vulnerable part of its body.
Actias lunaThe eyespots and folded wings of this luna moth look like a face to me when viewed this way. The leading edge of the wings are actually at the bottom of the image.
I have lots of photos of Luna Moths, but the silhouette of this newly emerged Luna Moth was irresistible.
Actias lunaThese two luna moths on an oak tree had just emerged in March, the first brood of the season. The purple edges on the wings are pigment accumulated over the winter months. Later broods usually have yellow edges.
ADELIDAE familyI don't know the life history of this tiny moth, but its long antenna must have an interesting tale to tell.
This female Spiny Oakworm Moth was laying eggs for at least half an hour.
Apatelodes torrefactaThe bright red prolegs are a quick giveaway that this is a Spotted Apatelodes moth caterpillar.
Apatelodes torrefactaThe color of the Spotted Apatelodes Moth caterpillar can range from white to bright yellow. Note the bright red prolegs.
Automeris ioThis is a beautiful caterpillar, but those who have experienced the stinging hairs of this caterpillar will tell you to avoid touching it.
Catocala iliaThe more common form of this caterpillar resembles the brown or gray color of tree bark rather than this beautiful green color of lichens.
Ceratomia catalpaeAlthough called a worm, it really is the caterpillar stage of the Catalpa Sphinx Moth.
Citheronia regalisThe adult moth is known as the Regal Moth or Royal Walnut Moth.
Citheronia regalisThe caterpillar of this moth is the fearsome looking Hickory Horned Devil.
Clostera inclusa This caterpillar is also known as the Poplar Tentmaker.
Composia fidelissimaThis is a mating pair.
Cucullia alfarataNote the scalloped stripe which can range in color from orange to yellow.
This particular caterpillar was feeding on Eastern Silver Aster (Symphyotrichum concolor), another member of the Aster family related to Camphorweed (Heterotheca subaxillaris).