Hello!
I'll be back today, and I'll come to talk about the fireflies and why you're illuminated at night, it's not that difficult, it's just a matter of knowing, with nothing to contribute.
The most important cause is that the chemical-organic composition of your abdomen. It has some segments, a true emitter of luuz, formed by photogenic cells traversed by a current of air. This flickering light seems a means of communication at the moment of courtship. The female, unable to fly, points out her presence to the male through the light effect, and he responds in the same way until he can reunite with his partner.
It is incredible since this effect gives us another beautiful phenomenon of nature and reminds us how beautiful it can be, in fact if you look at it, it looks like a city, without saying anything, have a nice day and do not forget smile.