CreatureData

Threadworm

Strongyloides stercoralis (Bavay, 1876) Stiles & Hassall, 1902

Status not recordedworms

The threadworm (Strongyloides stercoralis) is a species in the family Strongyloididae, order Rhabditida.

No freely licensed photo yet

Quick facts about the threadworm

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the threadworm live?

Not recorded

Where has it been introduced?

The Global Register of Introduced and Invasive Species lists the threadworm as introduced in 1 country.

  1. Estonia

Introduced means brought by people and now present; invasive means the country's checklist records an impact. A species can be native to one part of a country and introduced in another. Source: Global Register of Introduced and Invasive Species (CC BY 4.0).

Is the threadworm endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the threadworm classified?

  1. kingdomAnimalia
  2. phylumNematoda
  3. classChromadorea
  4. orderRhabditida
  5. familyStrongyloididae
  6. genusStrongyloides
  7. SpeciesStrongyloides stercoralis (Bavay, 1876) Stiles & Hassall, 1902

Synonyms Anguillula stercoralis

Catalogue of Life

Relatives of the threadworm

Other species in the same genus Strongyloides.

Sheep eel-worm

Strongyloides papillosus

StrongyloididaeNo free photo yet

CompareThreadworm vs Sheep eel-wormThreadworm vs Strongyloides amphibiophilusThreadworm vs Strongyloides aviumThreadworm vs Strongyloides bufonis

Common questions

Answered only where our data holds the answer.

Is the threadworm an invasive species?

The Global Register of Introduced and Invasive Species lists the threadworm as introduced in 1 country: Estonia, but does not flag it as invasive in any of them.

What kind of animal is the threadworm?

The threadworm (Strongyloides stercoralis) belongs to the family Strongyloididae in the order Rhabditida.

Sources and how to cite this page

Data as of 2026-11-14. How this page is put together.

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APA

CreatureData. (2026). Threadworm (Strongyloides stercoralis). Retrieved from https://creaturedata.com/animals/threadworm

MLA

“Threadworm (Strongyloides stercoralis).” CreatureData, 2026, https://creaturedata.com/animals/threadworm.

BibTeX
@misc{threadworm_2026,
  title = {Threadworm (Strongyloides stercoralis)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/threadworm},
  note = {Data as of 2026-11-14}
}