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Big Green Caterpillar on Colonial Parkway: Luna Moth or Sphinx?

Photo ID

Bright green, pinky-thick, Bic-lighter length, smooth, fast = likely luna moth larva (or sphinx). Luna caterpillars vary green to brown; sphinx have a rear horn (hard to see in photos).

Significance

Both are native, harmless, and become beautiful moths. No control needed—enjoy the sighting.

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