identification - What is this giant grub looking thing

I found this giant grub (at least I think it's a grub) while fixing up the mulch around one of my trees. This thing is huge. It's thicker and as long as my finger. Only has six legs. Anyone kno

White Grub NC State Extension

Redheaded pasture cockchafer – Cesar Australia

Black Caterpillars: An Identification Guide (With Photos) - Owlcation

giant Doug Fir grub

Witchetty grubs - The Australian Museum

Simple Visual Guide: 17 Types of Striped Caterpillars That May Be Eating Your Plants – Garden Betty

Can Grubs Kill Trees? - Woodsman Inc.

identification - What is this giant grub looking thing

What To Do About Grub Worms in Gardens

Identification of Grubs in Lawns University of Maryland Extension

How to Cook and EAT Giant Grubs : 6 Steps (with Pictures) - Instructables

Billbugs and White Grubs: Control in Home Lawns - 5.516 - Extension

BBC - Gardening - Advice: Pest and disease identifier