When rearing mealworms, commercial growers incorporate a juvenile hormone into the feeding process to keep the mealworm in the larval stage and achieve an abnormal length of 2 cm or greater.

• [ citation needed ]当养育mealworms ，商业种植者纳入幼激素进入喂养过程中，保持mealworm在幼虫期，并达到一种不正常的长度2厘米或更大。