Ask a Question forum: Mystery grub

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Name: Martha Martinez
San Fernando (Zone 10a)
martham92
Apr 1, 2018 4:25 PM CST
I've found several of these grubs while gardening. Sometimes underneath my planters. What are they and should I be worried?
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Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Apr 1, 2018 6:32 PM CST
They look like the larvae of Scarab beetles. It's not possible to identify which Scarab beetle species from a photograph, they would need to be examined under magnification, but these are typical of the "white grubs" that damage lawns.
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
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ctcarol
Apr 1, 2018 7:35 PM CST
I agree
Name: Bill
Livonia, Michigan (Zone 6a)
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BigBill
Apr 1, 2018 7:56 PM CST
Beetle larva, agreed. I agree
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Name: Greg Chrislip
Lawrence, KS (Zone 6a)
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GregC
Apr 2, 2018 1:02 PM CST
You need to look at the rastral pattern (pattern of setae) on the back side to identify to genus or species.
Crazy Entomologist
“The centipede was happy, quite, Until a toad in fun Said, 'Pray, which leg goes after which?; This worked his mind to such a pitch, He lay distracted in a ditch, Considering how to run.”
Name: greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
Apr 2, 2018 1:06 PM CST
I just chuck 'em away from the garden. If they are the scarab beetles they help to remove dog poop...from dogs who visit the yard so they are a beneficial insect in my yard. If they were tiny they might be Japanese Beetles and I would...squash them like a bug.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"
Name: Martha Martinez
San Fernando (Zone 10a)
martham92
May 3, 2018 2:11 PM CST
sooby said:They look like the larvae of Scarab beetles. It's not possible to identify which Scarab beetle species from a photograph, they would need to be examined under magnification, but these are typical of the "white grubs" that damage lawns.


Not a scarab beetle after all. It's a Jerusalem cricket larvae.
Name: Greg Chrislip
Lawrence, KS (Zone 6a)
Sempervivums Cactus and Succulents Bookworm Cat Lover
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GregC
May 3, 2018 2:38 PM CST
That is not a cricket larva. Jerusalem crickets "Hatchlings resemble miniature adults and may take nearly two years to develop, while individuals experiencing nutritional deficiencies or parasitic infections may take up to five years. "
https://arthurevans.wordpress....
Crazy Entomologist
“The centipede was happy, quite, Until a toad in fun Said, 'Pray, which leg goes after which?; This worked his mind to such a pitch, He lay distracted in a ditch, Considering how to run.”
[Last edited by GregC - May 3, 2018 2:46 PM (+)]
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Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
May 3, 2018 2:44 PM CST
Look like a June bug larva to me.
Anything i say, could be misrepresented, or wrong.
Name: Martha Martinez
San Fernando (Zone 10a)
martham92
May 3, 2018 2:47 PM CST
GregC said:That is not a cricket larva. Jerusalem crickets "Hatchlings resemble miniature adults and may take nearly two years to develop, while individuals experiencing nutritional deficiencies or parasitic infections may take up to five years. "
https://arthurevans.wordpress....



We kept it in a container. Sort of like an ant farm and just yesterday the cricket was there, right at the top. Do you think it's possible we scooped up the cricket along with the dirt?

Name: Greg Chrislip
Lawrence, KS (Zone 6a)
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GregC
May 3, 2018 2:48 PM CST
Too large. In our area, I'd say, Grape Pelidnota.
Crazy Entomologist
“The centipede was happy, quite, Until a toad in fun Said, 'Pray, which leg goes after which?; This worked his mind to such a pitch, He lay distracted in a ditch, Considering how to run.”
Name: Greg Chrislip
Lawrence, KS (Zone 6a)
Sempervivums Cactus and Succulents Bookworm Cat Lover
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GregC
May 3, 2018 6:34 PM CST
Yes, you must have scooped up both.
Crazy Entomologist
“The centipede was happy, quite, Until a toad in fun Said, 'Pray, which leg goes after which?; This worked his mind to such a pitch, He lay distracted in a ditch, Considering how to run.”
Name: greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
May 3, 2018 8:29 PM CST
martham92 said:
...the cricket was there, right at the top.


After you saw the cricket, did you look for the larva to see if it was still in the dirt?

Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"
Name: Kyle
Middle TN (Zone 7a)
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quercusnut
May 3, 2018 8:34 PM CST
Philipwonel said:Look like a June bug larva to me.


I agree

Name: Martha Martinez
San Fernando (Zone 10a)
martham92
May 3, 2018 11:02 PM CST
greene said:

After you saw the cricket, did you look for the larva to see if it was still in the dirt?



I didn't exactly look for it, but I took the dirt out and reused it for seed germination and there was no more work, thats why I just asked it was a Jerusalem cricket

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