what kind of bug is this?

[Nomada]

I see this every once in a while but can't figure out what purpose it serves?
unknown bug

 

[KoolDrew]

 

[JoeKing]

more like what bug is this???

 

[LtPage1]

<comicbookguy>

Worst parody thread ever.

</comicbookguy>

 

[YOyoYOhowsDAjello]

random urge to post my pic of a centipede

 

[dudeman007]

this one

 

[sniperruff]

weatherbug