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Caterpillars

Before developing beautiful and intricate coloured wings, butterflies and moths start out as caterpillars. During this stage of development, the caterpillar eats and grows and eats and grows, shedding its skin several times until it enters the transition stage and becomes a pupa. Because moths and butterflies undergo complete metamorphosis, the caterpillars bear no resemblance to the adults they will become. As such, and as there are thousands of different species of moths and butterflies in North America, identifying caterpillars can be very difficult. Some are familiar, and easy to identify, but many times caterpillars simply have to be recorded as "caterpillar species". If you recognize any of these caterpillars, please let me know!
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Black Swallowtail caterpillar
Giant Swallowtail caterpillar
Giant Swallowtail caterpillar
Giant Swallowtail caterpillar
Giant Swallowtail caterpillar
Giant Swallowtail caterpillar
Giant Swallowtail caterpillar
Mourning Cloak
Mourning Cloak
Mourning Cloak
Mourning Cloak
Red Admiral Caterpillar
Red Admiral Caterpillar
Monarch caterpillar on milkweed
Monarch caterpillar on milkweed
Monarch caterpillar
Monarch caterpillar
Monarch caterpillar on milkweed
Monarch caterpillar on milkweed
Monarch caterpillar with Variegated Lady Beetle
Monarch caterpillar with Variegated Lady Beetle
Woolly Bear Caterpillar (Isabella Tiger Moth)
Woolly Bear Caterpillar (Isabella Tiger Moth)
Woolly Bear Caterpillar (Isabella Tiger Moth)
Woolly Bear Caterpillar (Isabella Tiger Moth)
Woolly Bear Caterpillar (Isabella Tiger Moth)
Woolly Bear Caterpillar (Isabella Tiger Moth)
Eastern Tent Caterpillar Moth Malacosoma americanum
Eastern Tent Caterpillar Moth
Malacosoma americanum
Eastern Tent Caterpillar Moth Malacosoma americanum
Eastern Tent Caterpillar Moth
Malacosoma americanum
Forest Tent Caterpillar Moth  Malacosoma disstria
Forest Tent Caterpillar Moth
Malacosoma disstria
Acronicta americana
Acronicta americana
Confused Haploa (Haploa confusa) caterpillar
Confused Haploa (Haploa confusa) caterpillar
Confused Haploa (Haploa confusa) caterpillar
Confused Haploa (Haploa confusa) caterpillar
Rusty Tussock caterpillar (Orgyia antiqua)
Rusty Tussock caterpillar (Orgyia antiqua)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Milkweed Tussock Moth caterpillars (Euchaetes egle)
Hickory Tussock Moth (Lophocampa caryae)
Hickory Tussock Moth (Lophocampa caryae)
Hickory Tussock Moth(Lophocampa caryae)
Hickory Tussock Moth(Lophocampa caryae)
Crowned Slug (Isa textula)
Crowned Slug (Isa textula)
Crowned Slug (Isa textula)
Crowned Slug (Isa textula)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Hummingbird Clearwing moth caterpillar (Hemaris thysbe)
Pearly Wood-nymph (Eudryas unio)
Pearly Wood-nymph (Eudryas unio)
Parsnip webworm caterpillar (Depressaria pastinacella)
Parsnip webworm caterpillar (Depressaria pastinacella)
Parsnip webworm caterpillar (Depressaria pastinacella)
Parsnip webworm caterpillar (Depressaria pastinacella)
Salt Marsh Moth caterpillarEstigmene acrea
Salt Marsh Moth caterpillar
Estigmene acrea
Salt Marsh Moth caterpillarEstigmene acrea
Salt Marsh Moth caterpillar
Estigmene acrea
Salt Marsh Moth caterpillarEstigmene acrea
Salt Marsh Moth caterpillar
Estigmene acrea
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Virginian Tiger Moth
Virginian Tiger Moth
Viperís Bugloss Moth (Ethmia bipunctella)
Viperís Bugloss Moth (Ethmia bipunctella)
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar sp.
Caterpillar sp.
Caterpillar species
Caterpillar species
Caterpillar species
Caterpillar species