The strong claws make a hole in the side of the ant-hill, and the insects are collected on the extensile tongue.
All leeches are very extensile and can contract the body to a plump, pear-shaped form, or extend it to a long and worm-like shape.
Each palpacle is a tactile filament, very extensile, without accessory filaments or nematocysts.
The mouth is small and tubular, furnished with a long extensile tongue.
These captacula are of unequal length, highly contractile and extensile, easily thrown off and regenerated.