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Really big Scarab

Hi there, I'm long over due for joining this group as more than a lurker, but better late than never. My home is in Michigan, but at the moment I am living in Durham North Carolina. All of my keys and texts are at home and I am afraid I just can't retain the finer details of the keys in my memory. Anyhow, being from up north you can imagin my glee in finding "giant" sized creepy crawlies.

Most recent has been a very large beetle. It blew up into a cob web on my front stoop and I collected the "shell" for further examination. I tried for a picture, but my camera suddenly died on me, so a very detailed description will have to do. If anyone can give me a bit of information or a name for this wee beastie that would be very cool. It looks like a Xyloryctes jamaicensis, but I am not sure they live here.

okay so here goes. It is about 3cm long and very thick bodied. It has a rino type horn, is black, shiney and has some mud caked on part of the horn and head. It's underside is covered with redish brown hairs as are it's well spurred legs. The elytra is somewhat erradically etched with grooves (tiney perferation style) with some of these lines being tightly bound so they almost appear smooth and others looser resembling a bunch of little dots in a line rather than a real groove. The tarsal segments are hard to know for sure because I think I may be missing some... it almost looks like more than one tari come off the legs, but I know that can't be right, can it? I don't have a magnifying glass and I see no signs of the final segment on any of the legs. It looks like the abdominal plates number only 2 with one on each side. Superfically it looks like a giagantic version of the tiney ones (true dung beetles) I see up north in the horse pastures. Anyone recognise this species? I'd like to know more about it's life history. Thanks :)

edit: Silly me, I almost forgot the head gear. No visable signs of the anteni, but they may have fallen off or gotten folded up under. Very small or absent mouth parts.

sounds like male Xyloryctes
Yes, they are fairly common here in Durham--in late summer to early fall at lights. The color, the horn, and the hairiness underneath sound like a male Xyloryctes jamaciensis:

Compare, also, Phanaeus vindex:

which would probably be more colorful, and I don't think they are as hairy underneath.

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