(Zonochaeta)
- 65 - 235 µm
- Scales single-lobed, elongated with keel almost over the entire length
- one or more transverse rows with strongly elongated spines
- one pair of elongated terminal spines
14 Species:
Chaetonotus (Z. ) sextospinosus
Chaetonotus (Z. ) succinctus
Chaetonotus (Z. ) trichostichodes