Currently viewing the category: "Fireflies and Glowworms"
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Subject: What the heck?
Location: Nevada County, CA.
June 19, 2016 11:31 am
Found in Nevada County CA. Can you tell me what this freakish thing is?
Signature: Carol Macarty

Male Glowworm

Male Western Banded Glowworm

Dear Carol,
This is an adult male Glowworm Beetle probably the Western Banded Glowworm,
Zarhipis integripennis, which is pictured on BugGuide.  While male Fireflies that flash with bioluminescence as adults signalling to females that respond by flashing back, male Glowworms do not light up and only  larviform female Glowworms glow in the dark to attract a mate.  

What's That Bug? does not endorse extermination

Subject: Insect on the porch
Location: southern Indiana
March 24, 2016 1:27 pm
This insect seemed to curl the tail to propel itself forward. It was only 2.5 cm long. We found it on the front porch in southern Indiana at the end of March.
Signature: Oscar

Firefly Larva

Firefly Larva

Dear Oscar,
This is either a Firefly Larva or a Netwing Beetle Larva.

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Subject: What is this bug
Location: Sparta Tennessee
October 5, 2015 5:40 pm
Can you identify this bug for us. It is about 3/4 inch long and it”s tail lights up a neon green. We have hundreds of them in the yard and this is the first year that we have seen them. Our location is in middle Tennessee.
Thanks for any help.
Signature: Dick

Firefly Larva

Firefly Larva

Dear Dick,
How marvelous that you were able to observe the bioluminescence of this Firefly Larva.

What's That Bug? does not endorse extermination

Subject: Sabino canyon , Tucson AZ glow worm
Location: tucson. AZ, USA
September 27, 2015 10:06 pm
i ran across this bug during a night walk in Sabino Canyon, Tucson, AZ. It has a green glow in the tail.
It was in a riparian area but I found it on land crawling between two bodies of water.
I thought it might be s hellgrammite , but have not found a picture that is similar
Signature: thanks, Lance

Firefly Larva

Firefly Larva

Dear Lance,
This is not a Glowworm.  It is a Firefly Larva and they are in distictly different families.  We believe your individual is in the genus
Microphotus which is limited to western states.  Your individual looks very similar to this BugGuide image of Microphotus angustus, but that species is only reported in California.  Four other members of the genus are reported in Arizona, according to BugGuide, but no images of the larva are available.  Then again, it might be a member of a different genus.

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Subject: Bug ID Panama
Location: Panama
September 20, 2015 8:05 pm
Dear Bugman,
I would like to ask you if you know which family this insect belongs to.
It was found in Panama on the 20th of September (rain season) on the ground in secundair rainforest on 800m altitude (Rambala region).
I am very curious to hear what it could be.
With kind regards,
Signature: Stefanie

Beetle Larva:  Firefly or Net-Winged Beetle???

Beetle Larva: Firefly or Net-Winged Beetle???

Dear Stephanie,
This is a beetle larva, and it is either a Firefly Larva in the family Lampyridae or a Net Winged Beetle Larva in the family Lycidae.  The two families are very difficult to distiguish from one another when in the larval stage.

Dear Daniël,
Thank you very much!
Is thought it might be a trilobyte but they only occur in Asia if I am correct.
Cheers,
Stefanie

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Subject: Long red and black sand beetle larvae?
Location: Chesapeake, md
September 13, 2015 11:07 am
We found this on brownie beach on the Chesapeake bay, maryland. What could it be?
Signature: Divya

Glowworm

Glowworm

Dear Divya,
This is a Glowworm or Railroad Worm.  They really do glow in the dark.

Daniel, thank you so much! Wish I had known to test out the glowing, but it was really hard to google image a replica of long red black beach bug. Anyway, my 4.5 year old loved it:

What's That Bug? does not endorse extermination