‘ Perinereis aibuhitensis ’ species group

Perinereis subgroup 2A: Hutchings et al., 1991: 271–273 (partim).

‘ Perinereis aibuhitensis ’ species group: Villalobos-Guerrero et al. 2021: 284–285.

Remarks. ‘ Perinereis aibuhitensis ’ species group was proposed by Villalobos-Guerrero et al. (2021b) and, with the new species described herein, consists of 12 species: Perinereis aibuhitensis (Grube, 1878), P. babuzai (Hsueh, 2019), P. belawanensis (Pflugfelder, 1933), P. brevicirrata (Treadwell, 1920), P. khambhatiensis n. sp., P.kinmenensis (Hsueh, 2019), P. linea (Treadwell, 1936), P. rookery de León-González & Goethel, 2013, P. shigungensis (Hsueh, 2019), P. singaporiensis (Grube, 1878), P. vancaurica (Ehlers, 1868), and P. vitabunda (Pflugfelder, 1933) . These species are featured by having area VI with two bar-shaped (mostly broad-petite bars, sometimes smooth-bars) paragnaths, dorsal ligules not greatly expanded in posterior parapodia, dorsal cirri short, and heterogomph falcigers with blade straight and consisting of a markedly elongated incurved tooth. Villalobos-Guerrero et al. (2021b) also provided an identification key to species within the Group 2. The key is modified here to restrict it only to those species belonging to the ‘ aibuhitensis ’ group and updated to include the newly described species. Perinereis brevicirrata from Santos (Brazil) is excluded from the key because its morphology is incompletely known and poorly illustrated.