Clymenura scutata sp. n. A) Worm with cephalic plaque and first three chaetigers under regeneration, B) glandular shield in chaetiger 8, C) manubriavicular uncini from 1st chaetiger, D) manubriavicular uncinus from 11 chaetiger, E) notochaetae from 11 chaetiger, F) third chaetiger, G) last chaetiger.  A, G) Paratype UANL 8144, B–F) Holotype LEMA-PO153. Scale bars: A–B) 1 mm, C–E) 1000X magnification, F-G) 0.5 mm.