Diptera.info

Posted by Friuli on 07-06-2007 15:37

Hello, I saw a very big beetle in a humid zone. (Chaco - Paraguay)
Size: approximately 100 mm without the legs.
Someone knows the name?
Thanks..

Edited by Friuli on 07-06-2007 15:39

Posted by Sara21392 on 12-09-2011 18:04

Tooooooooooooooooo late, but Curculionidae!

Posted by ChrisR on 12-09-2011 18:11

I'd say Scarabidae ... looks like a "chafer" beetle to me

Posted by cthirion on 12-09-2011 18:25

Me too!

Posted by Sara21392 on 12-09-2011 18:33

But seems it has a snout!! Are you sure about???

Posted by Paul Beuk on 12-09-2011 18:38

Chris is absolutely right.

Posted by Sara21392 on 12-09-2011 18:42

Thanks for correct!

Posted by Alexandru Pintilioaie on 12-09-2011 20:38

The correct name is Scarabaeidae

Posted by nick upton on 21-09-2011 22:55

Definitely a big scarab, maybe a Golofa sp. female. The males have spectacular horns, but not the females, making species IDs tougher. I photogaraphed male Golofa porteri (a high altitude Andean species) fighting and pairs mating many years ago in Ecuador. http://www.naturepl.com/bin/npl.dll/go?a=disp&pt=1&t=us\sr-loadersearch.html&si=&usp=0&_spb=0&_spe=0&_spw=0&mw=2&_collection=&_type=&se=20&_filterori=&searchtext=golofa

Posted by Auke on 29-10-2012 21:53

#10

Although the original poster of the photo hasn't been on this forum for over five years, I'd still like to give an answer (a nice change from asking questions!).

Given the stated body length of about 10 cm and the lack of pronotal and cephalic armor, this can only be a pretty large female of a Megasoma species (Scarabaeidae: Dynastinae). Other South American dynastids, including Golofa, don't reach this size. Given the location, it's most likely a M. mars since the other large species of Megasoma don't reach this far south. For more info on the distribution and habitus of various species of Megasoma I refer to this website.

Best regards,

Scarabaeoid