The 17 year Brood X cicada arrived on the US east coast in May 2004. There's a good webpage with more detail at Here are some photos taken in Columbia, MD.





There really were a lot of them, but they mostly clustered in certain types of trees.

[Cicada shell]

This is the skin left behind from cicada molting.

[Cicada tree flagging]

Cicadas lay eggs in tree branches; this kills off some smaller limbs which is called "flagging".

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