A spinula is a small, bristle-like structure found on certain insects or other small animals.
The word spinula is very technical and is usually used in scientific or biological contexts.
Examples:
The beetle has spinulae on its legs.
The spinula helps the insect to climb.
I found a spinula on the ant's body.
The spinula looks like a tiny brush.
The spinula is the insect's secret weapon.
The scientist discovered a new type of spinula on the tiny bug.