Paradalhousia, Salazar-Vallejo, 2020

Salazar-Vallejo, Sergio I., 2020, Revision of Leocrates Kinberg, 1866 and Leocratides Ehlers, 1908 (Annelida, Errantia, Hesionidae), Zootaxa 4739 (1), pp. 1-114 : 81

Key to species of Paradalhousia n. gen.

1 Nuchal lobes parallel; middle chaetigers with notacicular and neuracicular lobes tapered, blunt or pointed............... 2

- Nuchal lobes divergent; middle chaetigers with notacicular and neuracicular lobes tapered, blunt; 20–40 neurochaetae per bundle, blades 5–22 times longer than wide, distal tooth falcate; middorsal peristomial tubercle pale................................................................ P. anomala ( Chamberlin, 1919) n. comb., reinstated; Marshall Islands

2(1) Neurochaetae about 20 per bundle, blades 5–11 times longer than wide ( fide Pettibone 1970 , Fig. 19e ); distal tooth straight; middle chaetigers with notacicular and neuracicular lobes tapered, pointed; middorsal peristomial tubercle brownish............................................................ P. papillosa ( Monro, 1926) n. comb., reinstated, China Sea

- Neurochaetae about 50 per bundle, blades 5–15 times longer than wide ( fide Pettibone 1970 , Fig. 17e ); distal tooth falcate; middle chaetigers with notacicular and neuracicular lobes tapered, blunt; middorsal peristomial tubercle pale.................................................................. P. oculata ( Treadwell, 1906) , n. comb., reinstated, Hawaii

Figures

FIGURE 17. Lamprophaea cuprea Grube, 1867, reinstated, largest non-type specimen (USNM 19194). A. Anterior region, dorsal view. B. Anterior end, dorsal view. C. Chaetiger 8, right parapodium, anterior view, MGS (insets: notacicular and neuracicular lobes). D. Same, neurochaetae. Scale bars: A: 1.4 mm, B, C: 0.3 mm, D: 80 µm.

FIGURE 19. Lamprophaea ockeri n. sp., holotype (LACM 10143). A. Anterior region, dorsal view. B. Anterior end, dorsal view. C. Chaetiger 8, left parapodium, anterior view, MGS. D. Same, neurochaetal blades including longest and shortest ones. Scale bars: A: 1.2 mm, B: 0.8 mm, C: 0.5 mm, D: 0.1 mm.