Short and thin chaeta, more or less straight, either simple-pointed or bearing two fine teeth on its distal end. Particularly, characteristic of the dorsal bundles in Naididae.

Pristinella amphibiotica.
P. amphibiotica 1 , dorsal needle chaeta.
N. communis 4 , photo of dorsal chaetal bundles with hair and needle chaeta.
N. pseudobtusa 2 , chaetae.

Alternative form for needle chaeta : needle chaetae.