Bradabyssa nuda (Annenkova-Chlopina, 1922) Salazar-Vallejo, 2017

Salazar-Vallejo, Sergio I., 2017, Revision of Brada Stimpson, 1853, and Bradabyssa Hartman, 1967 (Annelida, Flabelligeridae), Zootaxa 4343 (1), pp. 1-98 : 29

Group “ nuda ” Key to species

1 Body wider medially; dorsal surface sometimes areolated..................................................... 2

- Body cylindrical, barely swollen medially; dorsum never areolated.............................................. 5

2(1) Chaetiger 2 with notopodia larger than following ones; body wall areolated............. B. rugosa ( Hansen, 1880) n. comb.

- Chaetiger 2 with notopodia about as large as following ones; body wall never areolated.............................. 3

3(2) Gonopodial lobes close to neuropodia (shorter distance than gonopodial length).................................... 4

- Gonopodial lobes displaced midventrally (longer distance than gonopodial length); body with 35–40 chaetigers (24–39 mm long, 4–6 mm wide).............................................. B. nuda ( Annenkova-Chlopina, 1922) n. comb.

4(3) Neuropodia barely projected; median parapodia with 3–4 notochaetae and 4–5 neurospines per bundle; body with 26–29 chae- tigers (16–38 mm long, 3–4 mm wide)..................................................... B. alaskensis n. sp.

- Neuropodia markedly projected; median parapodia with 5–6 notochaetae and 6–7 neurospines per bundle; body with 27–36 chaetigers (19–32 mm long, 3–6 mm wide).................... B. strelzovi (Jirkov & Filippova in Jirkov, 2001) n. comb.

5(1) Anterior dorsal papillae of two different sizes.............................. B. bransfieldia ( Hartman, 1966) n. comb.

- Anterior dorsal papillae of a similar size.................................... B. antarctica ( Hartman, 1978) n. comb.