Brada irenaia Levenstein 1961a : 159 Revision of Brada Stimpson, 1853, and Bradabyssa Hartman, 1967 (Annelida, Flabelligeridae) Salazar-Vallejo, Sergio I. Zootaxa 2017 2017-11-03 4343 1 1 98 702a1e78-324d-43a8-a298-2df43d743da1 Salazar-Vallejo, 2017 Salazar-Vallejo 2017 [151,446,908,934] Polychaeta Flabelligeridae Bradabyssa GBIF Animalia Terebellida 49 50 Annelida species levensteinae sp. nov.     Brada irenaia.—  Levenstein 1961a: 159–160, Fig. 6, 1966:46 ( non Chamberlin, 1919).     Typematerial.  Northeastern Pacific Ocean.Nine syntypes( CAS 128946, 5spec. and CAS-133021, 4 spec.), variously damaged, off Oregon, Sta. 558 ( 48°36.5' N, 127°0.8' W),  2189 m,  11 Sep. 1971, A. Carey, coll. ( 21–40 mmlong, 3–4 mmwide, cephalic cage 2.5–4.0 mm long, 31–35 chaetigers).   Additional material.  Northeastern Pacific Ocean. Anteriorfragment ( USNM 1422368), off Santa Cruz Island, Calif.,  DOWB Deep Submersible Dive1-1935 ( 33°56' N, 119°38.7' W),  9 Mar. 1970, C.E. Roper, coll. (gonopodial lobes dark, lobate, in chaetiger 5; 5–6 series of dorsal papillae). Anteriorfragment ( USNM 1422369), R.V. Albatross, Sta.3073 ( 47°28' N, 125°15' W),  873 m,   28 Jun. 1889(gonopodial lobes white, rounded, in chaetiger 5; 4–5 series of dorsal papillae). Onespecimen ( USNM 1422370), R.V. Commando, AEC ProjectSW Mouth Columbia River, Unnumb. Sta.( 45°45' N, 125°09' W), shrimp trawl,  1647 m,   29 May 1964, M.S. Alton, coll. ( 32 mmlong, 4.5 mmwide, cephalic cage 4 mmlong, 34 chaetigers; gonopodial lobes in chaetiger 5, and another one on right side of chaetiger 4; 5–6 series of dorsal papillae).  Northwestern Pacific Ocean.Fivespecimens (SIORAS V-603), Bering Sea, R.V. Vitjaz, Sta.603 ( 59°30' N, 168°00' E), 3034–  2622 m,   16 Sep. 1950, R. Levenstein, id. (two complete 17.5–25.0 mm long, 2.2–4.0 mm wide, cephalic cage 1.8–3.0 mm long, 33–37 chaetigers, gonopodial lobe in chaetiger 5). Twospecimens (SIORAS V-1549), Bering Sea, R.V. Vitjaz, Sta. 1549 ( 60°16' N, 180°16' E),  1710 m, grab (complete, broken in two portions, 12+ 16 mmlong, 3.5 mmwide, cephalic cage 2.5 mmlong, 13+26 chaetigers, gonopodial papillae in chaetiger 5). Tenspecimens (SIORAS V-956), Bering Sea, R.V. Vitjaz, Sta. 956 (coordinates not available) (4 complete: 28–37 mmlong, 4–5 mmwide, cephalic cage (damaged) 1.5–2.0 mm long, 42–45 chaetigers, gonopodial papillae in chaetiger 5).   Description. Best syntype(CAS 133021) complete ( Fig. 25A); body stiff, pale, cylindrical medially, swollen in both ends but anterior half markedly wider than rest of body, anterior end funnel shaped with head partially exposed; 40 mmlong, 3 mmwide, cephalic cage 3 mmlong, 35 chaetigers. Tunic papillated; one specimen with cuticle detached. Papillae and integument variously covered by fine sand grains, each forming sand tubercles. Tubercles of two different sizes and shapes; smaller ones digitate, larger ones globose, mucronate, about 1/3 as large as neuropodial lobes, all arranged in 6–8 alternating series in median chaetigers. Anterior end exposed in one specimen (CAS 128946). Cephalic tube short, margin smooth. Prostomium low rounded lobe, eyes colorless. Palps long, thick, with a longitudinal furrow, longer than branchiae; palp keels low, rounded. Caruncle separating branchiae into two lateral groups, with median smooth keel and two lateral ciliated ridges, keel larger, swollen ( Fig. 25B). Dorsal and lateral lips fused, ventral lip reduced. Branchiae cirriform, sessile on branchial plate, separated into two lateral groups, filaments arranged in several rows, about 85 filaments per group. Nephridial lobes not seen. Cephalic cage present, chaetae as long as 1/13 body length or as long as body width. Only chaetiger 1 involved in cephalic cage; chaetae arranged in short lateral series, each with 5 chaetae per side. Anterior margin of first chaetiger rounded, papillae short, probably eroded (one specimen with long papillae). Chaetigers 1–3 progressively longer. Chaetal transition from cephalic cage to body chaetae abrupt; aristate neurospines present from chaetiger 2. Gonopodial lobes in chaetiger 5 ( Fig. 25C), short, rounded, pale. Parapodia well developed, lateral ( Fig. 25D). Median neuropodia ventrolateral. Notopodia and neuropodia close to each other. Notopodia with chaetal lobe rounded, with 1–2 inferior long papillae, about 1/3 as long as notochaetae; neuropodia with larger rounded lobe, with 4–5 inferior long papillae; notopodial lobes rounded, short. Median notochaetae arranged in short transverse series, all notochaetae multiarticulate capillaries with articles medium-sized basally, progressively longer ( Fig. 25E), 5–6 chaetae per bundle, as long as 1/3 body width. Neurochaetae multiarticulate capillaries in chaetiger 1; posterior chaetigers with aristate neurospines, arranged in È-shaped patterns, 5–9 per bundle ( Fig. 25F). Each neurospine with short rings basally, become slightly shorter medially, distally hyaline with long mucro. Posterior region slightly swollen ( Fig. 25G), pygidium with anus terminal, anal cirri absent.  Variation. Complete syntypes 21–40 mmlong, 3–4 mmwide, cephalic cage 2.5–4.0 mm long, 31–35 chaetigers; other specimens 17.5–37 mmlong, 2.2–5.0 mm wide, cephalic cage 1.8–3.0 mm long, 33–45 chaetigers.   Remarks. These  Bradabyssa levensteinae  n. sp.specimens were questionably assigned to  B. irenaia( Chamberlin, 1919) n. comb., or  B. ochotensis( Annenkova-Chlopina, 1922) n. comb.by myself during this study. However, they differ in important aspects from both these species: the  B. levensteinaespecimens possess a marked body constriction from the median segments that continues to the posterior end, a feature that is absent from  B. irenaiaand  B. ochotensis. Levenstein (1961a, 1966) assigned her material to  B. irenaiadue to having similar chaetiger numbers, but they are different.   However, B. levensteinae n. sp. resembles B. papillata(Hartman, 1967) n. comb. by having long bodies with tubercles of different size but the main differences lie in the body shape, and on the relative pigmentation of neurochaetae; in B. levensteinaethe body is wider along the anterior half, and its neurochaetae have transparent tips, whereas in B. papillatathe body is wider along its median region, and its neurochaetae have honey-color tips.   Etymology. This species is named after Dr. Raisa Y. Levenstein in recognition of her many publications on polychaete taxonomy and ecology, and her recording of this species from the Bering Sea.   Distribution. Bering Sea to California, in sediments, 873–2189 mwater depth. 1697157891 1971-09-11 CAS A. Carey 2189 48.608334 Northeastern Pacific Ocean. Nine 110 -127.013336 Oregon 49 50 CAS 128946, 5 2 syntype 1697157865 USNM Calif. Northeastern Pacific Ocean. Anterior Santa Cruz Island 49 50 USNM 1422368 1 1697157876 1970-03-09 DOWB C. E. Roper Sta. 873 47.466667 Deep Submersible Dive 1116 -125.25 Albatross 49 50 USNM 1422369 1 1697157884 1889-06-28 USNM R. V. Commando Unnumb. Sta. 1647 45.75 One 1128 -125.15 Mouth Columbia River 49 50 USNM 1422370 1 1697157883 1964-05-29 M. S. Alton Sta. 2622 59.5 Northwestern Pacific Ocean. Five 1037 168.0 Vitjaz 49 50 1 1697157898 1950-09-16 Ten Bering Sea 1710 60.266666 Levenstein 1033 180.26666 Two 49 50 1