Not a clue(South Dakota)

[charlesdarwin]

This thing fell out of the air near me while I was at work with a loud enough thump to get my attention I think it is the biggest insect I have ever seen hence why I was curious what it is.

img201.imageshack.us/img201/1762/20120426063132279.jpg

[thanos]

It's a Lethocerus sp. (Heteroptera; Belostomatidae). They are aquatic and predatory and can be seen at night flying at lights near lakes,rivers,etc. They have worldwide distribution and I have cought here in Greece a few giant specimens.

Thanos

[charlesdarwin]

Awesome thanks!

[ckswank]

Be careful, they can inflict a fairly painful bite when handled. Down here in the southern US they are commonly called "toe biters"!