What does the inside of a jumping bean look like?

Jumping beans are the seeds of a type of spurge, a flowering plant. Inside, they contain a larva of a small moth, the Mexican jumping bean moth (Cydia saltitans). The larva is about 2 millimeters long and has a dark head and light brown body. It is surrounded by a small amount of webbing and frass (insect waste). When the larva moves around inside the seed, it causes the bean to jump.