The short rib over each long rib is a thickened chitinous body extended and interweaved by the H-CFL, V-HFL and VFL of the intercostal membrane on both sides, and is a mass-piece with damping function.

• 每条长肋上方的短肋是由两侧间膜的H-CFL,V-HFL和VFL伸延和交织而成的加厚几丁质体,具有阻尼功能的质量块。