Photo by Melody

Mollusc-eating Hammerhead Worm (Bipalium vagum)

Order: Tricladida
Family: Bipaliidae
Genus: Bipalium
Species: vagum


No positives
4 neutrals
2 negatives


This bug has been reportedly found in the following regions:

Mobile, Alabama
Ozark, Alabama
El Dorado, Arkansas
Citrus Heights, California
Fallbrook, California
Brooksville, Florida
Gainesville, Florida
Jacksonville, Florida
Melbourne, Florida
Naples, Florida
Augusta, Georgia
Griffin, Georgia
Schofield Barracks, Hawaii
Franklin, Louisiana
Blue Eye, Missouri
Wake Forest, North Carolina
Seneca, South Carolina
Swansea, South Carolina
Dallas, Texas
Lyle, Washington

By DonnaA2Z
Thumbnail #1 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by DonnaA2Z

By gargoyle84

Thumbnail #2 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by gargoyle84

By fleurone

Thumbnail #3 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by fleurone

By SazzyShortness

Thumbnail #4 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by SazzyShortness

By SazzyShortness

Thumbnail #5 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by SazzyShortness

By alfu

Thumbnail #6 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by alfu

By fallbrook901

Thumbnail #7 of Mollusc-eating Hammerhead Worm (Bipalium vagum) by fallbrook901

There are a total of 11 photos.
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Member Notes:

Negative gagurl330 On Jul 6, 2009, gagurl330 from Winston Salem, NC wrote:

My son and I saw this worm on our sidewalk after an early evening rain. I just recently bought four containers of lavender from Lowe's. I've never seen anything like this before and contacted the Extension Agency for our county. They didn't take a report.

Negative gshare74 On Jun 16, 2010, gshare74 from Citrus Heights, CA wrote:

We found one of these worms the other day in our yard, since then I have found about 15 in my courtyard after I water. I cant find much info on it except that they eat earthworms. I want to know how to kill it, how long they live, ext.

Neutral alfu On Jul 4, 2010, alfu from Gainesville, FL wrote:

This worm is frequently mistaken for B. kewense, which eats mainly earthworms:

Creation Wiki:

University of Florida Dept of Entomology:




Vagum is thought to consume molluscs. I have one in a jar now (8/20/2010) with a small snail ... will see.

Neutral wormsci On Oct 17, 2010, wormsci from Cortland, NY wrote:

The following link connects to a paper about the differences between the three most common broadhead planarians now found in North America. It includes a figure showing the color pattern differences among their heads.

If that doesn't work, the article was published in the Southeastern Naturalist 6:449-460 in 2007.

Neutral ErzsebetF On Jun 4, 2014, ErzsebetF from Swansea, SC
(Zone 8b) wrote:

I just found my first hammerhead worm underneath a self watering flower pot on the edge of my herb bed. I do not think I like the looks of this worm. I certainly don't want this worm to eat my beneficial earthworms!
I read the University of Florida report about this worm and I am not encouraged. It appears that these imports are probably getting around in potted plants we buy at our garden shops! which are carried from the greenhouses. Gee, thanks Burpee! and/or Bonnie Bell!
I think the next time I find one, I will put it in a jar of alcohol. I do not want to encourage this worm to grow and get into my vegetable garden; or my herb beds.
I think I like my friendly earthworms better!

Neutral mistifarang On Sep 10, 2014, mistifarang from Bangkok
Thailand wrote:

I found this flatworm in my garden in Bangkok

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