Subject: Cottonwood stag beetle
Location: Orem ut
January 1, 2017 5:37 pm
We have what we believe is a cottonwood stag beetle larvae. He is over 2 inches long and has large pinchers. We found him buried in the wood chips at the playground where we have seen the really big cottonwood stag beetles and we are assuming for its size and location that is what we have. My kids really want to “raise” it. We have kept it in a jar with wood chips for about 3 months. We occasionally add a little water. I can’t find anything about it’s lifecycle. What else can we do to ensure a successful metamorphosis in the spring/summer. We check every few days for movement through the glass, so far so good.
Signature: Jr entomologists
Dear Jr entomologists,
You are our first posting of the New Year after returning back to the office today. We agree that this is most likely a Cottonwood Stag Beetle Grub since you have found adults in the vicinity. Your individual looks like the Stag Beetle Grub pictured on BugGuide.