se·ta 
(sētə)
(sētə)n. pl. se·tae (-tē)
1. A stiff hair, bristle, or bristlelike process or part on an organism, especially an invertebrate.
2. The stalk of a moss or liverwort capsule.
[Latin saeta, sēta, bristle.]
setal (sētl) adj.
setasetae on the foot of a gecko