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Tree grub or larvae?

Tree grub or larvae?
Hartford County, Connecticut, USA
May 27, 2010
Size: 1.75-2 inches long
A maple tree in our back yard fell last night during a lightning storm. There was quite a bit of rot in the tree trunk, and this large grub-like larvae had fallen out of the tree trunk. Next to it was this capsul created from saw dust. What type of insect is this? It's startlingly large!

Moved from ID Request.

Not Cotinis
Cotinis ("green june bug")larvae develop in the soil. This is one of the scarabs that develops in dead, rotting wood.

Scarabaeoidea: Scarabaeidae
Definitely a Scarab Beetle grub (Scarabaeoidea: Scarabaeidae)

f.y.i. - The color of the grub indicates that it is dead (they change to a dark slate gray, brown or black when dead. White to yellowish white when alive)


We really need a closer look to make and accurate id. (if that's even possible).

BEST GUESS - possibly a Green June Beetle ???
1) grub proportions (grubs are often much larger than the adult!)
2) size of grub and pupa chamber
3) some experience rearing a number of native eastern Scarab species incl. Cotinis spp.

Great, thanks! I can't get an
Great, thanks! I can't get another shot with more detail since it's gone now (An animal probably had a large meal!)
Sorry about the duplicate, thanks!

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