Laubieriopsis Petersen, 2000

Magalhães, Wagner F., Bailey-Brock, Julie H. & Rizzo, Alexandra E., 2014, Laubieriopsis petersenae n. sp. and L. cf. cabiochi (Amoureux, 1982) (Polychaeta: Fauveliopsidae) from dredge disposal sites off Honolulu, Hawaii, Zootaxa 3893 (1), pp. 143-150 : 144

Key to species of Laubieriopsis Petersen, 2000

1 With up to 16 chaetigers................................................................................ 2

- With 21 or more chaetigers.............................................................................. 4

2(1) Last segment with aciculars extending beyond pygidium when retracted.......................................... 3

- Last segment with aciculars not extending beyond pygidium when retracted; with 16 chaetigers............. L. hartmanae

3(2) With 15 chaetigers; unpaired genital papilla on right side of chaetiger 6/7; bidentate aciculars on thoracic chaetigers............................................................................................. L. petersenae n. sp.

- With 16 chaetigers; paired or unpaired genital papilla on right side of chaetiger 6/7; bidentate aciculars absent...... L. brevis

4(1) Genital papilla unpaired on right side of chaetiger 8; strongly or weakly bidentate acicular on thorax; last segment with acicu- lars extending beyond the body; 21 chaetigers....................................................... L. cabiochi

- Genital papilla paired; more than 21 chaetigers.............................................................. 5

5(4) With 22 chaetigers; paired genital papillae on segment 8; bidentate aciculars on thorax..................... L. norvegica

- With 25 chaetigers; paired genital papillae on both sides of chaetigers 6/7................................ L. arenicola