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Terrestrial Planaria Flatworms

Unknown in the North Carolina Piedmont
around North 35.78 - West 78.78°

Professional landscapers, responding to a demand for lollipop tree scenescapes, accidentally transport terrestrial planaria all over the world. They are now there to stay, changing our ability to sustainably produce food in ways we do not yet understand. If you see one of these here please let us know!



Order Tricladida -> Geoplanidae -> Arthurdendyus (Dendy 1894)
Image courtesy of Down Garden Services

Arthurdendyus (formerly Artioposthia) triangulata

New Zealand flatworm. Reported to be seriously decimating earthworm populations in the UK, but unknown here.



Geoplanidae -> Caenoplaninae -> Australopacifica (Dendy 1894)

Australian flatworm.

Image courtesy of Ken Harris, taken in Morwell National Park, Australia, 2003 Sept 29



Geoplanidae -> Caenoplaninae -> Australopacifica (Dendy 1894)

Australian flatworm.

Image courtesy of Ken Harris, taken in Morwell National Park, Australia, 2003 October 16



Geoplanidae -> Australoplana

Australian flatworm.

Image courtesy of Ken Harris, taken in Morwell National Park, Australia, 2003 April 5



Order Tricladida -> Bipaliidae -> Bipalium -> B. kewei
Image courtesy of Tom D. Schultz

Bipalium kewei

Photographed September, 2003 in Granville Township, Licking County, OH. Unknown here.


Order Tricladida -> Bipaliidae -> Bipalium -> B. pennsylvanicum
Image courtesy of Diversity Web

Bipalium pennsylvanicum

Three dark stripes on tan body; central black stripe much wider than B. kewense. So far, only identified in Pennsylvania. Preys on earthworms. Unknown here.

Note: An academic authority on turbellaria claims this image is actually of B. vagum. Stay tuned.



Order Tricladida -> Bipaliidae -> Bipalium -> B. rauchi (von Graf 1899)
Photo courtesy of Melvyn Yeo

Bipalium rauchi

Found in unknown location on Jun 04, 2008, about 2.5cm in length. Known to be present in Florida, unknown here.


Order Tricladida -> Bipaliidae -> Bipalium -> B. vagum
Photo courtesy of Dave's Garden

Bipalium vagum

As frequently as a grey rat snake is confused with a copperhead, B. vagum is frequently mis-identified as B. kewense by university scholars and nature websites. The North Carolina State University Department of Entomology mis-attributes both the worm and the photographer! Three dark stripes on tan body; central dark stripe much wider than B. kewense. Uninterrupted dark collar behind the head that completely encircles the neck, unlike the interrupted dark patches on B. kewense. Common in Florida in the United States. Thought to prey on snails and slugs. Unknown here.


Order Tricladida -> Bipaliidae -> Bipalium -> ???
Photo courtesy of Craigslist

Unknown 1

Unidentified worm found here in the Triangle area July 20, 2007. Appearing to have two stripes, it is probably B. kewense, with the photograph not being distinct enough to show the narrow central stripe. Discoverer smushed worm before positive identification could be made.

Image is not yet available
Order Tricladida -> Rhynchodemidae ->
Rhynchodemus -> Rhynchodemus sylvaticus (Leidy 1851)

Photo courtesy of N/A

Rhynchodemus sylvaticus

has been reported in North Carolina. A very small (<2 cm) flatworm from Europe that is well established in New Zealand, it uses an expanded cephalic hood to capture small insects.


Order Tricladida -> Bipaliidae -> Bipalium -> ???
Photo courtesy of Dave's Garden

Unknown 2

Unidentified worm found in unknown location on Aug 2, 2007. Appears to have no stripes. Leigh Winsor suggests it may be Diversibipalium falcatum (Graff) from Sumatra, Indonesia.


Order Tricladida -> Bipaliidae -> Bipalium -> ???
Photo courtesy of Forestry Images

Unknown 3: Humbertium voigti?

Unidentified worm found in unknown location in the United States on Aug 25, 2008. Attributed as B. kewense, but Leigh Winsor suggests it may be Humbertium voigti (Graff) from northwestern Madagascar.


Order Tricladida -> Rhynchodemidae -> Dolichoplana striata Moseley
Photo courtesy of Ken Fuller

Dolichoplana striata

Found in unknown location in California in 2005. Six stripes. Reported to prey on earthworms, but we have not confirmed this. Also common in Florida; unknown here.


Order Tricladida -> ???
Photo courtesy of Uglyoverload Weblog

Unknown 4

Unidentified worm found in unknown location in the United States on Aug 16, 2008.


Order Tricladida -> ???
Photo courtesy of UK DEFRA

Terricola from the British Isles

Terrestrial planaria thriving in England, from Australia, New Zealand and other areas, would probably do well here as well, so keep an eye out for them.

Haven't identified your worm on this page? Here are various photo galleries of terrestrial planaria from around the world:
    An awesome collection of New Zealand flatworms by Dr. Maria Minor

    Flatworms from New Zealand

    Flatworms from New Zealand in the British Isles


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