About
The character 蟛 is used solely in the compound 蟛蜞 to designate a type of small crab, and its construction follows the phono-semantic model with the radical 虫 on the left, classifying it as a creature, and the component 彭 on the right, which primarily serves to indicate pronunciation. This character was devised within the context of expanding Chinese vocabulary to name specific fauna, and its semantic scope has remained narrowly fixed to this particular crustacean without undergoing diversion or expansion.