Female or Male P. truncatus

[Peter Clausen]

Phileurus is a rarely collected beetle in the United States. Photos on bugguide suggest that males have horns like this:

http://bugguide.net/node/view/260447/bgimage

However, the specimen I caught a few weeks ago in Arizona has very lobed horns (see attached, below).

Can anybody describe the sexes of these beetles?

Thank you in advance!

 

[Dynastes]

That photo on bugguide is a female. Whoever wrote it was a male had no idea what they were talking about.

Your beetle is a male.

 

[Peter Clausen]

I feared as much. I couldn't find any of P. truncatus on bugguide.net that showed lobed horns to the same degree as this specimen I caught. Thanks Orin!