Insects that shine

The lampirids are a family of polyphagous coleoptera that includes the insects known as fireflies, light bugs, isondus, cucuyos and light worms, all known for their bioluminescence (emit light). You can find them in swamps or humid and wooded areas, because that's where their larvae have a lot of food source.
They have two thin and articulated antennae, elytra (anterior wings), a prothorax (first of the three segments of the thorax of a bug) so that it almost covers its head. In most species the sexual dimorphism is very noticeable: while the males reach a complete development similar to that of other coleoptera (beetles), the females retain a larval aspect, with elytra reduced to scales and more like pillbugs than beetles , with stubby legs and without wings, they can not fly. They shine in the dark because they have special organs that allow them to do so. Below the abdomen have light organs and special cells, when they absorb O2, it combines with a substance called luciferin. From this chemical reaction, light is obtained.