Did you know there are 7 species of periodical cicadas in the eastern U.S.? These insects spend nearly their entire lives underground as nymphs, or immature cicadas. When they reach 13 or 17 years old, they emerge from the soil, climb trees and shed their nymph exoskeletons. This year marks the emergence of Brood X, a phenomenon that won't be seen again until 2038. These cicadas emerge in large numbers, reproduce and die, all in a matter of several weeks. Have you spotted any? Video: Pharaoh cic

2.7K views · 74 reactions | More often heard rather than seen, cicadas are characterized by their stout bodies, clear-membraned wings, and large compound eyes. Males are best known for producing loud buzzing sounds using their abdomens in order to attract a mate. While they may appear menacing to some, cicadas are quite harmless and are a definite sign of hot summer days. #WildlifeWednesday | Connecticut Fish and Wildlife | Facebook

169K views · 755 reactions | Here’s what you need to know about the historic cicada emergence happening right now! Two broods of cicadas are set to emerge at the same time, with the total number of cicadas in the billions or trillions. Let us know if you see any this summer! #Cicadas #Insects #Science | Museum of Science, Boston | Facebook