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

Subject: What’s this bug
Location: North America , Georgia
August 6, 2014 9:18 am
I live in middle Georgia (United States) , it’s Summer here I found this strange flying bug last night flying at me but it disappeared. This morning it was in my room. What is it , where did it come from and more important who sent it
Signature: Yes

Glowworm

Glowworm

Dear Yes,
You write as though you suspect this is a conspiracy.  This is an adult male Glowworm Beetle, and the luminescent larvae are sometimes called Railroad Worms.  It is a harmless and beneficial insect.  Since the concept of Spontaneous Generation has been scientifically dispelled, we postulate that it is descended from other Glowworms, and we can’t imagine who sent it, but since “males come to lights” according to BugGuide, we imagine it was attracted to your illuminated interior.

What's That Bug? does not endorse extermination

Subject: glowing worm
Location: Auburn, NY
August 2, 2014 1:54 pm
I found this worm in my kitchen late at night, maybe brought in on the fur of a cat, but
it was glowing yellow/green, I caught it and looked at it in the day and still don’t know what it is
Signature: Pat P

Glowworm

Glowworm

Hi Pat P,
Though it is commonly called a Glowworm or Railroad Worm, this is actually the larva of a beetle in the family Phengodidae, and we have several images on our sight that document the glowing of Glowworms.

Thanks so much.
I was at a loss to know.
Have a truly wonderful day!
Pat

What's That Bug? does not endorse extermination

Subject: Bug from Honduras
Location: Roatan, Honduras
July 28, 2014 9:46 pm
Hello there!
We found this insect in Roatan, Honduras in my friend’s shower. We have spend hours online trying to identify this creature and are coming up empty. The wings on it’s head are so strange! Like long eyelashes! It also looks like the bottom might have a stinger. Please help. We are dying to know the answer.
Signature: Lynette

Male Glowworm Beetle

Male Glowworm Beetle

Hi Lynette,
This is a male Glowworm Beetle in the family Phengodidae, and you can see its resemblance to this image on BugGuide.  The wings and feathered antennae indicate this is a male.  According to BugGuide:  “Adult males have variously shortened/narrowed soft elytra, branched antennae, and bulging eyes; adult females are larviform (often all but impossible to tell from fully-grown larvae) and, like the larvae, have bioluminescent organs.”

What's That Bug? does not endorse extermination

Subject: Glowworm?
Location: Palo Duro Canyon – near Amarillo Texas
July 23, 2014 1:46 pm
Saw this worm while hiking in Palo Duro Canyon near Amarillo Texas last week (7/20/2014). In one picture it appears to be eating a millipede.
Signature: jcochran

Glowworm eats Millipede

Glowworm eats Millipede

Dear jcochran,
Thank you for sending us your excellent documentation of a Glowworm eating a Millipede.  Glowworms, which are the larvae of beetles in the family Phengodidae, are also called Railroad Worms because of the bioluminescence.

Glowworm

Glowworm

What's That Bug? does not endorse extermination

Subject: Very Interesting Insect
Location: Round Rock, Texas
July 7, 2014 11:58 pm
Hi,
I found this little guy in my house one night and thought it was just another moth or june bug, but once i got close to it I noticed how unusual it was. I have never really seen an insect like this before. I love the antennae on this guy, they’re so intricate. Its very unique looking to me, and I’ve always loved insects. Any information on what this could be would be greatly appreciated.
Thanks!
Signature: – Tyler Moore

Male Glowworm Beetle

Male Glowworm Beetle

Dear Tyler,
Thank you for providing us such marvelous documentary imagery from multiple angles of a male Glowworm Beetle in the family Phengodidae.  Unlike Fireflies, adult male Glowworms are not bioluminescent, however, the larvae, sometimes called Railroad Worms, are capable of emitting light. 

Male Glowworm Beetle

Male Glowworm Beetle

Male Glowworm Beetle

Male Glowworm Beetle

What's That Bug? does not endorse extermination

Subject: Glowing Insect
Location: Vietnam
June 24, 2014 11:15 am
A friend of mine in Vietnam posted a video today. It contains a clip of an weird bug with a glowing bum. The video was taken at Cát Tiên national park (in Vietnam). He and I have both tried researching it with no success. It seems to have beetle like legs up front, but tiny catterpillar like legs on it’s rear end. The video is more helpful than the picture I provided. Could you help us out by identifying this weird insect? Here is a link to the video:
https://www.facebook.com/#!/photo.php?v=10152232679183723&set=vb.737983722&type=2&theater&notif_t=comment_mention
Signature: ~Meagan Preston

Firefly

Firefly

Hi Meagan,
This is a Firefly in the family Lampyridae, and we believe it is either a larva or a larviform female.  See this image on BugGuide that shows a similar insect from Texas.

My friend says that looks right except the insect in question was bigger than his thumb. Do they get that big?

We are not certain how large Fireflies grow in tropical countries.  Alas, there is not a good comprehensive identification source for Vietnamese insect identifications that we are aware of that is in English.

He sent me a photograph.

Firefly Larva or Larviform Female Firefly

Firefly Larva or Larviform Female Firefly

Thanks Meagan,
The new image has much more detail.  We stick to our guns on this being a Firefly Larva or adult Larviform (usually female) Firefly.  Again, we are not familar with species from Vietnam, but when time permits, we will attempt to provide you with some additional information.

 

What's That Bug? does not endorse extermination