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
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.
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.
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.
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!