Thorny-headed worm
- kingdom: Animalia
- phylum: Acanthocephala
- class: Palaeacanthocephala
- order: Echinorhynchida
- family: Rhadinorhynchidae
- genus: Leptorhynchoides
- species: Leptorhynchoides thecatus
Storrs
Connecticut- South Gull Lake
Michigan- Atkinson
Nebraska- Barrington
New Hampshire- Cooperstown
New York
United States