I thought all grub worms were June Bugs but this guy

This guy is huge. I found him deep in my compost pile. I must be doing something right for him to be this big.

Here he is rolled up

One more with a quarter on him rolled up.

Stag Beetle, perhaps?

hmmm, I too dug up a grub while working in the garden. It look likes yours, and mine was definately a Japanese Beetle grub. I don't think it's THAT big, when rolled up maybe the size of a nickle or dime, not a quarter size.

I have those too.. realy big!

I think this is a June Bug grub. Not positive from your photos but it looks like it has dots on it's side. Check out the photos at:
www.floridagardener.com/img/critters/Insect_Pests/WhiteGrubs.htm

Let's hope your compost does for your plants what it did for this grub!

It definitely has spots. Maybe you can see them better here.

or here

or maybe here.

With all due respect, it probably takes a very good eye to know which beetle this guy would be. As far as I know though it will be some kind of beetle.
I've had huge grubs in large tunnels in rotten wood, along with Bess Beetles, which are very big too.

I agree with Sally. The only way to know for sure is to wait.

Yes it is hard to tell. I noticed stag beetle larve have spots also. I am not sure I will find him in my yard but maybe I will see him again. I have seen some weird beetles in my time. I don't think dung beetles live here but they are funny when I seen them on TV.

Green fig beetles are in that family and are huge. That may be a good candidate for something from compost, that may have had fruit waste.
Y'all probably have a bunch of things in TX that we don't have in cooler MD.

So glad I found this thread. I'm taking out grass to inlarge my flower bed and have found dozens of these and had no idea what they were. I've been throwing them into the street because I didn't know if they would be harmful to the plants. Good thing because now I know they could do damage.

I have some like these that seem to LOVE rotting oak. I for the life of me cant remember what they are called (besides gross grubs) but they are excellent bait!

These specimens seem too large to be fig eaters (Cotinis sp. - which also characteristically crawl on their backs); more likely in the subfamily Dynastinae (rhinoceros beetles, etc.) Some examples:
http://bugguide.net/node/view/429055/bgimage
http://calphotos.berkeley.edu/cgi/img_query?enlarge=7777+7777+0910+0373
http://www.hypothermia.0catch.com/larva.html

Am so glad i found this thread. Was changing the soil of my garden and found tons of these burrowing around. Couldn't figure out what the heck they were. These bugs do grow big for a larval stage!

They must eat their spinach lol