后来的翼的发育过程中，产生了无翅基因这种形成机制，并且通过促进特定区域的细胞生成色素的方法来在翼上扩散花纹。
Late in wing development, the Wingless morphogen is produced and diffuses through tissue where it prompts cells in certain areas of the wing to make pigment.
色素细胞在表皮之下形成色素层，呈不规则分支状或块状。
The chromatophores layer was found to lie beneath the epidermis and was irregular in shape.
色素细胞在表皮之下形成色素层，呈不规则分支状或块状。
The chromatophores layer was found to lie beneath the epidermis and was irregular in shape.
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