Samia cynthia
（重定向自Cynthia moth）
![](/Images/godic/202501/07/Samia_cynthia_adult_male_sjh2439.JPG")
![](/Images/godic/202501/07/Samia_cynthia_adult_female_sjh2439.JPG")
![Ailanthus silkmoth from Roxas City, Panay island, Philippines (Photo from the wildlife photo collections of John Alaban).](/Images/godic/202501/07/Ailanthus_silkmoth_from_the_Philippines2440.jpg")
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The Ailanthus silkmoth (Samia cynthia) is a saturniid moth, used to produce silk fabric but not as domesticated as the silkworm, Bombyx mori. The moth has very large wings of 113–125 mm, with a quarter-moon shaped spot on both the upper and lower wings, whitish and yellow stripes and brown background. There are "eyespots" on the outer fore wings.