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What's That Bug? does not endorse extermination

Glowworm

Red, Black and Yellow Centipede Like Insect
July 12, 2009
Hello Bugman. I encountered this centipede like creature while walking on an old blacktop in Central Arkansas just west of Little Rock. I have never seen something like it. Sorry that I could not get a better picture of him. At first he was crawling around free, but when I uncovered it, it curled defensively into a ball and would not stretch back out. Hopefully the distinctive colors will help.
Ben Batten
Little Rock, AR

Glowworm
Glowworm

Hi Ben,
This is actually a beetle larvae known as a Glowworm.  Sadly, you did not get to witness its bioluminescence since your sighting was during the day.  We found a very similar image on BugGuide, but your specimen has even brighter coloration.

Possibly Glowworm (or maybe Cicada Parasite Beetle)

Interesting Antennae
Mon, May 25, 2009 at 2:04 PM
Hello, Bugman,
A long time ago I spotted this interesting insect in my laundry room. It is dark brown, with black wings, thin, has a relatively small head and, maybe most importantly, has curled, feathery antennae. It is approximately 1.5 to 2 centimeters long. The bug was found in Sao Paulo, Brazil, in January (summer). The weather was quite hot on that night (about 30° Celsius).
Thanks in advance! Keep up with the great site!
Ricardo
Sao Paulo, Brazil

possibly Glowworm

possibly Glowworm

Hi Ricardo,
Often with exotica, we are totally clueless as to identity. That said, we believe this is a beetle, possibly a male Glowworm in the family Phengodidae, or maybe a Fire Colored Beetle in the family Pyrochroidae. We would favor a Glowworm. Hopefully, a reader will be able to assist in a more accurate identification.

possibly Glowworm

possibly Glowworm

Update: A Differing Opinion
Hi Daniel:
Since the antennal appendages are lined up along one side only (bilaterally asymmetrical), I think this guy might be in the family Rhipiceridae (=Rhipiceratidae). It is difficult to find much useful information or photos for this relatively obscure group, but I believe it may be a species of the genus Rhipicera (=Rhipidocera) which occurs in Brazil (31_rhipiceratidae) and Australia . In Australia they are called feather-horn beetles. Another candidate genus could be Callirhipis (=Callirrhipis), another Old and New World genus. As you may have gathered, the taxonomy for this group is rather confusing. There is agreement that both of the above genera belong to the Suborder Polyphaga, along with the North and South American genus Sandalus, but there is little agreement regarding their placement in the same family, or even superfamily. Most “Rhipicerid” larvae are parasites on cicada larvae; the Bugguide refers to the Rhipiceridae as cicada parasite beetles (alternatively cedar beetles). Or I could be on the wrong track altogether. Regards.
Karl

Glowworm Larva or Railroad Worm

Black with orange spot… not a centipede
Sun, Mar 22, 2009 at 6:11 PM
Hi I found this interesting specimen in George Washington national park located in Staunton Virginia. I have never seen anything like it and have been camping there for about ten years. I was hoping you would be able to ID it for me as it’s a very interesting and colorful insect. I thank you for your time and effort… I love your site and have used it extensively to satisfy my curiosity about bugs…
Thanks!!
David Barton
Staunton Virginia

Glowworm

Glowworm

Dear David,
What a positively magnificent Glowworm Larva you have photographed. it is in the family Phengodidae. There is an identical specimen posted on BugGuide that was photographed in North Carolina. It is unfortunate that you didn’t have the opportunity to see it glowing a luminescent green in the dark.  Glowworms are also known as Railroad Worms.

Glowworm

Glowworm

What's That Bug? does not endorse extermination

Glowworm

Can you identify this?
Sirs,
I found this in forest litter in foothills of Colorado at about 8000 ft. elevation last fall. I saw several of them glowing green in the dark and was able to find a couple and photograph them. I am attaching several photo’s and from looking at your site it may be a firefly, but I have lived here for 45 years and have never seen these before. I appreciate any information you can provide as to what this is. I can’t believe I found this web site and still have the photo! Thanks!
Bill Trust

Hi Bill,
We wrote to Eric Eaton to see if he knew a species name for your Glowworm. We wrote back saying he would check with another expert. Here is Eric’s query followed by the expert’s thoughts: “Q Dear Art: I did not know there was anything like this in Colorado! Any ideas? A John Wagener Green revised Microphotus in 1959 (Coleopterists Bulletin 13: 80-96). The only species he lists from Colorado is Microphotus pecosensis Fall. Fall described this species in 1912 from specimens collected in June and July in New Mexico. Green also recordedthis species from Arizona, California, Texas, Utah, and Chihuahua. His Colorado records include Royal Gorge, Junction Creek, San Luis Valley, and Stollsheimer. He notes that they were all females collected in June and July and that, although their identities are not certain, they are probably pecosensis. The pink females are said to closely resemble the more common CA species, M. angustus LeConte and have 6-segmented antennae, 4-segmented tarsi. The CO specimens all have 3-segmented “