Currently viewing the category: "Fireflies and Glowworms"
What's That Bug? does not endorse extermination

Subject:  Mysterious glowing multi-legged critter
Geographic location of the bug:  Terre Noire, Cape Breton, Nova Scotia, Canada
Date: 03/30/2018
Time: 05:01 PM EDT
Your letter to the bugman:  Photo taken at 9:26 pm (Atlantic time) September 27, 2017 at the brushy edge of my long rural driveway. On a number of nights, I saw a faint glow in several places on the ground as I was walking. When I investigated, I saw this character moving slowly and glowing at the edges of its sides. Never saw more than one at a time in any given spot, but some weren’t far from each other. I think it was approx 5-7cm long.
How you want your letter signed:  Andrew

Firefly Larva

Dear Andrew,
This sure looks to us like the larva of a Firefly, and since you did observe it glowing, your observation does lend credence to our identification.  Some Firefly larvae are capable of bioluminescence.

 

What's That Bug? does not endorse extermination

Subject:  Part Alien Bug Insect
Geographic location of the bug:  Memphis TN
Date: 02/25/2018
Time: 02:00 AM EDT
Your letter to the bugman:  After heavy rains  this fella came onto the porch to reach higher ground
How you want your letter signed:  CLWhite 33

Firefly Larva

Dear CLWhite 33,
This is the larva of a Firefly.  While many folks, including children, are familiar with the flying, bioluminescent adults that are also called Lightening Bugs, not many people recognize the larvae.

Thanks, so much I searched every where. I can now educate those around me. No one knew what it was.
What's That Bug? does not endorse extermination

Subject:  Brown, multi-plated, horned with extending proboscis, crawling insect
Geographic location of the bug:  Middle Georgia, USA
Date: 02/05/2018
Time: 04:06 PM EDT
Your letter to the bugman:  I sure hope someone can figure out what this insect is. Only one I’ve ever seen. Early February in a warmer than usual Winter. The Robins are already here for Spring. It is on an exterior polyester rug. Approximately one half inch long. Rolled up, perpendicularly to the concrete floor, almost to a closed circle when I moved it.
Thank you for your time and assistance.
How you want your letter signed:  Dan

Firefly Larva

Dear Dan,
This is the larva of a Firefly, or possibly a Net Winged Beetle larva, but we would favor the former.  Here is a BugGuide image for comparison.  The larvae of many species of Fireflies feed on snails and slugs.

What's That Bug? does not endorse extermination

Subject:  Caterpillar like black bug with red spots
Geographic location of the bug:  North Carolina
Date: 10/25/2017
Time: 09:22 PM EDT
Saw this in the bathroom on the floor at work today. Never saw one before and was curious to see what it was exactly. It appered to only have 6 legs and drag its rear behind. Took the pics and it was relocated outside where it belongs.
How you want your letter signed:  Gin

Glowworm

Dear Gin,
Had you turned out the lights, you would have seen this Glowworm phosphoresce with green light.  A glowing Glowworm, also known as a Railroad Worm, is an impressive sight.

What's That Bug? does not endorse extermination

Subject:  Glowing bug
Geographic location of the bug:  Hopkinsville ky.
Date: 10/15/2017
Time: 12:09 PM EDT
After dark , just the other nite. I seen this glow out on the yard, look like a lightning bug glow. Went to investigate it an this is what I found.
How you want your letter signed:  Robert Daniels

Firefly Larva

Dear Robert,
This is the larva of a Firefly and many larval Fireflies are also capable of bioluminescence.  There is a similar image of a Firefly larva on the University of Kentucky Entomology site.

Thank you so much! Never dreamed that a firefly larva would look like this. Looked more like some type of roly poly spiecis.

What's That Bug? does not endorse extermination

Subject: Identify insect?
Location: Troy Michigan
August 22, 2017 6:49 pm
My friend was stung by this bug and became very ill. She feels there was a nest in the ground. She had a severe reaction and ended up in emergency.
Signature: Thank You, Julia B

Firefly

Dear Julia B,
We do not doubt that something made your friend sick enough to end up in the emergency room, but are you certain this is the culprit?  Perhaps it is circumstantial evidence that caused this Firefly to be a suspect, like it was found near your friend after the incident.  Fireflies are actually Beetles, and to the best of our knowledge, no  Beetles are capable of stinging.  To the best of our knowledge, Fireflies are not considered a threat to humans.  We strongly suspect it was something else that caused the reaction in your friend.  This appears to be a Winter Firefly based on this BugGuide page, and despite its name, BugGuide reports sightings in Michigan in July and September as well as other months.

What's That Bug? does not endorse extermination