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- Disease: Enterobiasis
- Habitat in human: Large intestine – caecum and colon
- Diagnosis of infection: Microscopic examination of perianal scraping to detect eggs
Morphological Features
- Colour: Yellowish white
- A cuticle surrounds the body
- Posterior end is pointed like a pin in female
- Three muscular lips around the mouth
- Has wing-like expansions on each side of head
- Prominent bulb in the oesophagus – only nematode human to show this
Male
- Size: up to 2.5 mm long; male smaller than female
- Posterior end is blunt and curved ventrally; bears six sensory papillae and a single copulatory spicule
Female
- Female: 8 – 13 mm in length
