Currently viewing the category: "Grubs"

Subject:  Ground Beetle Larva
Geographic location of the bug:  Campbell, Ohio
Date: 07/28/2021
Time: 11:33 AM EDT
Gentle Readers,
Yesterday while digging in the garden where he made a compost pile in April, Daniel encountered the predatory beetle larva, almost two inches long, and he moved it to another place in the garden where no new activity is planned.  Research on BugGuide indicates this is a Ground Beetle larva.

Ground Beetle Larva


Subject:  Cicada???
Geographic location of the bug:  Delaware April 6
Date: 04/08/2021
Time: 10:44 AM EDT
Your letter to the bugman:  Can you tell me what this is?
How you want your letter signed:  Robin

Scarab Grub

Our Auto-response: Thank you for submitting your identification request.
Please understand that we have a very small staff that does this as a labor of love. We cannot answer all submissions (not by a long shot). But we’ll do the best we can!

Please help me.  I am trying to get this Id so I can send to local paper who wants it if it is a cicada.
Enjoy Life,
Robin Coventry

Scarab Grubs

Dear Robin,
We suspect your urgent identification request is related to the imminent appearance of the Brood X Periodical Cicadas, sometimes called 17-Year Locusts though they are not true locusts.  CicadaMania has information on Brood X which last appeared in 2004, when we were but a fledgeling website.  These are not immature Cicadas.  You did not indicate where they were located.  These are Beetle Grubs.  We suspect they may have been found in or near a rotting stump and we believe, due to their size, that they may be the Grubs of Eastern Hercules Beetles.  Here is an image from BugGuide of Eastern Hercules Beetle Grubs.  The adult male Hercules Beetle is an impressive creature, the heaviest North American Beetle.

Subject:  Mystery Bug, Japan
Geographic location of the bug:  Northern Hyogo Prefecture, Japan
Date: 06/22/2019
Time: 07:13 AM EDT
Your letter to the bugman:  I found the strangest bug out on my run today. We’re in the middle of the rainy season right now (late June), and a massive downpour had just finished. I live in a pretty rural area and I found this guy on the road next to the rice paddies. At first I thought it was a caterpillar of some kind, but the way it was moving was a little off. Instead of the normal perstaltic motion it was kinda flopping around more like “the worm” dance, raising it’s head pretty significantly at the end of each movement. And when it flipped over while crawling I was surprised to see it had six legs! The skin looked pretty soft and covered in silt, and combined with the fact that it wasn’t very elegant moving around on land I guessed it was probably aquatic. When I got home I googled pictures for dragonfly larvae though, they don’t match at all! It was about 10 cms long, with a rather big and fat “tail”, six small legs, and small but noticable mandibles. What kind of bug could this be? I’ve never seen anything like this in the three years I’ve lived here. Thank you!
How you want your letter signed:  Justin

Larva Dorsal View

Dear Justin,
Had you only provided us with a dorsal view, we might have pondered this being a Soldier Fly pupa, but the legs and mandibles rule out that possibility.  We believe this is a Beetle larva.  We will continue to research this identification while having posted it as Unidentified.

Larva Ventral View

Update:  Cesar Crash believes this is a Water Scavenger Beetle larva in the family Hydrophylidae.

Subject:  What is it?
Geographic location of the bug:  Central Illinois
Date: 06/16/2019
Time: 04:01 AM EDT
Your letter to the bugman:  I was transplanting herbs, moving compost around.
How you want your letter signed:  LoLo

Possibly Blurry Scarab Grub Image

Dear LoLo,
Your image is too blurry to be certain, but since this was found in a compost pile, we suspect it is a Scarab Beetle grub.

Subject:  need help with ID
Geographic location of the bug: Westmoreland State Park, in Montross, VA 22520
Date: 05/13/2019
Time: 08:24 AM EDT
Dear Daniel,
I tried to upload this photo to your website, but it appears my computer is “buggy”, ha ha. I found this (I presume) larva on the path of Westmoreland State Park, in Montross, VA 22520, on April 20th. I moved it to the side where it wouldn’t get stepped on. When moving it, it kept trying to dive under the leaf I was trying to move it with, perhaps it was ready to pupate much like Manduca sexta does (I used to work with them). I managed one photo before it burrowed into the leaf litter. It was about three inches in length.
I cannot find anything in my books or on your site. I am hoping you can help me….
Thanks so much for your great website. Sometimes I just browse through to see insects that live in places I’ll never be able to visit.
Regards, Seth

Unknown Beetle Larva

Dear Seth,
Many larval forms of insects are not well documented.  This appears to us to be a Beetle larva.  Perhaps one of our readers will recognize it and write to us.

Subject:  What is this??
Geographic location of the bug:  Southern california
Date: 04/29/2019
Time: 09:01 PM EDT
Your letter to the bugman:  I keep finding these in my soil when I am planting. They are usually a couple inches under the soil. Lived here 23 yrs and never saw them. This spring I’ve already found about 40. Should I be worried??
How you want your letter signed:  Worried gardener

Scarab Beetle Grub

Dear Worried gardener,
Though we cannot provide you with a definitive species, this is definitely the grub of a Scarab Beetle.  Many species of June Beetles have grubs that feed on the roots of grasses.