Megasoma sp. - the Elephant beetles are not too shabby either and may be the bulkiest (and heaviest) insects in the world. 
https://farm1.staticflickr.com/56/13...d82ec7ff_o.jpg
http://www.sciencephoto.com/image/36...beetle-SPL.jpg
https://encrypted-tbn1.gstatic.com/i...CUQiJgXjmaQIcQ
http://www.foundshit.com/pictures/an...uge-bug-02.jpg
http://www.boingboing.net/filesroot/200806051159.jpg

https://farm1.staticflickr.com/56/13...d82ec7ff_o.jpg
http://www.sciencephoto.com/image/36...beetle-SPL.jpg
https://encrypted-tbn1.gstatic.com/i...CUQiJgXjmaQIcQ
http://www.foundshit.com/pictures/an...uge-bug-02.jpg
http://www.boingboing.net/filesroot/200806051159.jpg





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