Laubieriopsis petersenae Magalhães, Bailey-Brock & Rizzo, 2014 TL. North Pacific, dredge disposal sites off Honolulu, near Pearl Harbor (Hawaii, USA). D. Only known from the TL. Diagnosis. Laubieriopsis with 15 chaetiges. Chaetigers 1–4 with two aciculars with bidentate tips, and two capillaries per ramus. Chaetigers 5–15 have one unidentate acicular and one capillary per ramus. GP unpaired, right side of chaetiger 6/7. Remarks. Laubieriopsis petersenae is similar to L. blakei n. sp. because both have only 15 chaetigers. However, as already indicated in the key above, their main differences are in the type of anterior aciculars, the number of anterior thoracic segments, and in the type of genital papillae. In L. petersenae aciculars are bidentate, there are four thoracic chaetigers, and genital papillae are single, whereas in L. blakei aciculars are tapered, there are only three thoracic chaetigers, and genital papillae are paired. There is another difference regarding the depth where these species thrive; L. petersenae is a shelf species but L. blakei n. sp. is abyssal.

Published as part of Salazar-Vallejo, Sergio I., Zhadan, Anna E. & Rizzo, Alexandra E., 2019, Revision of Fauveliopsidae Hartman, 1971 (Annelida, Sedentaria), pp. 1-67 in Zootaxa 4637 (1) on page 56, DOI: 10.11646/zootaxa.4637.1.1, http://zenodo.org/record/3335202