"It fixes its tail to the branch, spins a thick thread, and wraps the thread around its middle like a rock-climber hanging from a cliff," Ch'en says.
「它把尾部固定在樹枝上，再吐絲成一條粗線，繞過自己腰間；像個攀岩者，利用繩索將自己懸掛在岩壁上」，陳維壽說，正常情況，蝴蝶中只有鳳蝶與粉蝶科是這種「懸蛹」，其它多為倒掛在枝葉上的「吊蛹」。