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Photo#1146074
Rhinoceros Beetle - Strategus cessus - female

Rhinoceros Beetle - Strategus cessus - Female
Kohl's Ranch, elev ca. 5300 ft., Gila County, Arizona, USA
July 17, 2013
Size: 3.2 cm
Ponderosa pine/juniper/oak forest vicinity of Tonto Creek.

Images of this individual: tag all
Rhinoceros Beetle - Strategus cessus - female Ox Beetle - Strategus cessus - female

Moved
Moved from Strategus aloeus.

This is Strategus cessus.
It is black rather than "castaneus" as Strategus aloeus is often called. The tiny "horn" probably indicates that this is a male, but looking at the last abdominal segment (aka sternite) is the right way to tell. This species is found over most of New Mexico and Arizona, usually at elevations of above 2000 feet.

 
In order to help
figure this out I'm going to post photos of two other individuals I have found. These photos include views of the last abdominal segment from the dorso-lateral aspect and ventral aspect. Photos of each individual will be posted in separate ID requests. Thanks for checking into this for me Bruce and Blaine.

Moved tentatively
Despite the comment below, you cannot use color to separate the species. I am not sure off-hand if S. cessus is that far north in AZ.

Moved from ID Request.

Strategus sp.
Strategus cessus is black, Strategus aloeus is reddish.

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