Hermundura tricuspis Müller, 1858: 216 Parandalia tricuspis Salazar-Vallejo 1990: 512–515 Pilargidae (Annelida: Phyllodocida) from coastal and deep waters of the Southwestern Atlantic, with descriptions of two new species Ribeiro, Rannyele Passos Barbosa, Aline Da Cruz Freitas, Roberta Zanol, Joana Glasby, Christopher J. Ruta, Christine Zootaxa 2020 2020-11-12 4878 1 56 76 3L2FL Muller, 1858 Muller 1858 [151,586,1687,1714] Polychaeta Pilargidae Hermundura Animalia Phyllodocida 12 68 Annelida species tricuspis   Figure 9A–D      Hermundura tricuspis Müller, 1858: 216, pl. 7, figs 19–20.     Parandalia tricuspis Salazar-Vallejo 1990: 512–515, figs 3a–e.   Material examined.  BRAZIL: Campos Basin: 21º55’18.918”S, 40º55’0.625”W,  16 m, two specimens,  11.iii.2009(MNRJP-002741);   78 m, three specimens,  21.ii.2009(MNRJP-002742); 23º1’47.127”S, 41º58’29.231”W,  80 m, two specimens,  28.ii.2009(MNRJP-002743);  Stateof Espírito Santo: Peroá Cangoá: 19º32’00”S, 39º35’00”W, one specimen ( IBUFRJ0388).  Stateof Santa Catarina: Itajaí: 26°54′30″S, 48°39′45″W, one specimen ( IBUFRJ1143).   TABLE 2.Main morphological features of  Pilargisspecies presently known.    Characters/Species Papillae Parapodial glands Relative length of Neurochaetae Relative length of Type locality  dorsal cirri of first dorsal and ventral  and second chaetiger tentacular cirri    P. angeliSalazar-Vallejo Minute, sparse, mainly in No traces of large Longer Limbates, denticulate, 1.2x longer Eastern  & Harris, 2006 anterior end and dorsal cirri glandular areas, ventral distally unidentate, straight, Tropical Pacific  glands absent tend to curl; smooth capil- Ocean  laries    P. berkeleyaeMonro, Small, sparse, mainly on Gland mass only in pos- 3x longer Smooth Longer Eastern Pacific  1933 anterior end and parapodial terior chaetigers, ventral capillaries; limbates finely Ocean  lobes glands absent spinulose and distally bi-  dentate    P. cholaeSalazar-Vallejo Very conspicuous, large Absent Longer Smooth capillaries; limbates Not given Gulf of Mexico,  & Harris, 2006 capitate ones dorsally, finely spinulose, bidentate Northwestern  smaller ones ventrally Atlantic    P. maculataHartman, Minute, sparse, mainly Glands present from 2x longer Laterally spinulose capillar- Longer Eastern Pacific  1947 on anterior end dorsal cirri setiger 1 or 2 (in clus- ies, bidentate Ocean  with few papillae ters)    P. modestaIntes & Le Small, less abundant over From anterior segments Longer Long or short, sometimes Longer Northwestern  Loeuff, 1975 parapodial lobes in median present in the cirro- curled; few long capillaries, Africa, North  and posterior segments phore, ventral glands most limbates very finely Atlantic Ocean  unknown spinulose, limbus almost  smooth    P. mohriGallardo, 1968 Small, distributed in three Absent Longer Limbates finely spinulose, Slightly longer Central Western  longitudinal bands, two unidentate; smooth capil- Pacific Ocean  lateral close to parapodial laries  lobes, one mid-dorsal with  larger papillae    P. pacificaZachs, 1933 Densely verrucose, includ- Dorsal glands present Longer All chaetae bidentate, shaft Subequal Northwestern  ing prostomium, palps, and from anterior chaetigers, with row of teeth Pacific  cirri ventral glands unknown  ......continued on the next page   Description.Fixed specimens whitish. Largest individual measuring 30 mmlong, 0.45 mmwide and 65 chaetigers (MNRJP-002741). Body sub-cylindrical, surface smooth. Prostomium trapezoidal, antennae and eyes absent ( Fig. 9A). Two palps fused and biarticulated, palpophores large and palpostyles reduced to small papillae. Proboscis not observed. Peristomium set off from prostomium; tentacular cirri absent. Parapodia uniramous in first chaetiger, following parapodia biramous ( Fig. 9A). Second chaetiger with a pair of subepidermal ocelli. Notopodium reduced to small lobes from chaetiger two ( Fig. 9B). Notopodial spines present from seventh chaetiger to the end of the body. Neuropodium well developed, ventral cirri present from fourth chaetiger to last. Neurochaetae comprising six capillaries finely hirsute spirally ( Fig. 9B, D). Segmentation of the posterior region weakly marked; chaetigers gradually longer from chaetiger 15. Pygidium rounded and concave, with three cirri ( Fig. 9C).   Distribution.Atlantic Ocean—Brazil ( Amaral et al.2003; Attolini & Tararan 2001; Paiva 1993); Uruguayand Argentina( Salazar-Vallejo & Orensanz 1991); Argentina, Mar del Plata ( Palacios et al.2005). Pacific Ocean—Gulf of Nicoya, Costa Rica( Dean 1998).   Remarks.  Hermundura tricuspisresembles  H. fauvelibut differs in having eyespots and notopodial spines from seventh chaetiger, while  H. fauvelihas notopodial spines from the ninth chaetiger. Furthermore,  H. fauvelihas the first five chaetigers with segmentation very marked ( Pettibone 1966); this is absent in specimens examined from this study. All diagnostic characters observed in the specimens of this study confer to the description of the neotypesby Salazar-Vallejo (1990). Additionally, no morphological variation was observed in the material examined. 3044198312 2009-02-21 2009-03-11 2009-02-21 IBUFRJ Brazil Campos Basin 16 -19.533333 Peroa Cangoa 21 -39.583332 State 12 68 IBUFRJ0388 1 Espirito Santo 3044198310 2009-02-21 2009-03-11 2009-02-21 IBUFRJ Brazil Campos Basin 16 -19.533333 Peroa Cangoa 21 -39.583332 State 12 68 IBUFRJ0388 1 Espirito Santo 3044198303 2009-02-21 2009-03-11 2009-02-21 IBUFRJ Brazil Campos Basin 16 -19.533333 Peroa Cangoa 21 -39.583332 State 12 68 IBUFRJ0388 1 Espirito Santo 3044198311 [446,1415,2001,2029] IBUFRJ Brazil -26.908333 Itajai 20 -48.662502 State 12 68 IBUFRJ1143 1 Santa Catarina