regal moth

American  

[ree-guhl mawth, moth] / ˈri gəl ˈmɔθ, ˈmɒθ /

noun

1. a large moth, Citheronia regalis, found mostly in North America, having reddish-orange hindwings and yellow-spotted, grayish-olive forewings: the larva, pupa, and adult are the largest moth forms found north of Mexico.

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Etymology

Origin of regal moth

First recorded in 1850–55