Top 12 Caterpillars Found in Missouri 

Woolly Bear Caterpillar:The woolly bear caterpillar is characterized by its 13 unique segments, which can be either a rusty brown or black color.

White Marked Tussock Moth Caterpillar:The white-marked tussock moth caterpillar has stripes and tufts that can be white or yellow in color.

Viceroy Caterpillar :The viceroy caterpillar has an appearance that mimics bird droppings throughout all its growth stages. It can be spotted in brown or green shades, adorned with cream-colored spots .

Spicebush Swallowtail :Spicebush swallowtail caterpillars are known for their bright green, sleek appearance, highlighted by two pairs of striking black and yellow eyespots on a raised area behind the real head. 

Monkey Slug Caterpillar:The monkey slug caterpillar resembles a fuzzy, brown starfish with a slightly elongated shape. Unlike typical caterpillars, these unique creatures have suckers instead of prolegs.

Monarch Caterpillar:In Missouri, the monarch is one of the most identifiable caterpillars. When they’re in their first growth stage, they might be tiny and colored pale green or a whitish-gray, looking almost see-through.

Io Moth Caterpillar:The io moth caterpillar is reddish-brown and features six light-colored lines running along its body, with six rows of spiny protrusions. 

Hornworm Caterpillar:The hornworm caterpillars are recognizable by their large size and distinct blue-green color. These caterpillars can measure up to four inches, making them easy to spot.

Giant Leopard Moth Caterpillar:The caterpillar of the giant leopard moth can reach a length of about two to three inches and is adorned with glossy black bristles.

Eastern Tiger Swallowtail Caterpillar:Eastern tiger swallowtail caterpillars are notable for their bright green color and the presence of two large eyespots on the body just behind the head, making them look as though they have large eyes.

Cecropia Moth Caterpillar:One of the largest caterpillars in Missouri, the cecropia moth caterpillar also stands out for its bright colors. These caterpillars can grow even longer than an adult’s finger, reaching up to 4.5 inches. 

Armyworm Caterpillar:The armyworm caterpillar starts its life as a light green larva, later transforming into a brownish caterpillar adorned with white and brown stripes along its sides. 

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