- Habitat in human: Small intestine – duodenum and upper jejunum
- Detected in faeces of infected human
Diagnostic Features
- Size: 12 – 15 µm (range 10 – 20 µm) in length
- Shape: Pear shaped and Bilaterally symmetrical
- Dorsal surface is convex and ventrally concave
- Sucking disc on ventral surface
- 02 nuclei
- 04 pairs of flagella
- Axostyle visible as a rod in the middle
- Parabasal body (dark staining transverse bodies) sometimes visible
