Here is rapresented a Magicicada septemdecim, one of the most peculiar insects of all kind. I found the incredible life-cicle of this cicada's extremely fascinating, both biologically and in therms of evolutional meaning. I therefore choosed to draw one specimen as simple as possible but with scientific accuracy. This kind of cicada are able to remain at the larvae status for seventeen or thirteen years (both prime numbers) before emerging in enourmus numbers, to reproduce. This kind of strategy results in an effect called predator satiation, which simply means that cicada's are too many to be all eaten by predators. The significance of their long life cicle and the evolutionary meaning of the prime numbers, are quite more complex and yet as well fascinating: on one hand this numbers could better avoid predation whilst on the other, it could be an evolutionary strategy to avoid hibridization between different breeds.
The subject has been drawn with Adobe Photoshop
As the author of illustration I have given permission and consent to be loaded in Wikimedia Commons with Creative Commons Attribution Share Alike 3.0.