Iphione henshawi Pettibone 1986

Iphione henshawi Pettibone, 1986 Figs 3A–C, 10, 11, 36 Iphione henshawi Pettibone, 1986: 21–23, Figs. 8, 9; Wehe 2006: 62, Fig. 7a–h. Type material. Hawaii. Holotype (USNM 81936), Hilo, low water, May 1904, H. Henshaw, coll. (holotype in worse condition than paratype; body pale, without elytra; right parapodia of chaetigers 2, 9, 12–15 previously removed (kept in container); prostomium with eyes black, anterior eyes in lateral projections, very close to posterior eyes; elytra with epibionts, variably eroded, dark yellow, with one to a few thin blackish oblique lines, some without lines; macrotubercles small, in median elytra about 10 rows; cirrigerous segments with dorsal cirrophores without projected basal tubercle; body 29 mm long, 16 mm wide, 29 chaetigers). Paratype (USNM 5439), USFCS Albatross, Sta. 3999 (21°56’20” N, 159°42’45” W), Kaulakahi Channel, between Kauai and Nihau Islands, 13–271 m, 16 Jun. 1902 (used for redescription). Additional material. Hawaii. One specimen (BPBM R 481), Oahu, Makapuu Point, 1 Jul. 1955, depth not given, C.E Cutress, coll. (body 35 mm long, 17 mm wide, 28 chaetigers; data used for variation). One specimen (CASIZ 10057), Hawaii, Hilo, July 1915, E.M. Erhorn, coll. (dark brown elytra, moderately covered in debris, with narrow oblique dark band submedially, lighter pigment at lateral margin, 10 diffuse rows of small macrotubercles, progressively smaller posteriorly, prostomium damaged and retracted into anterior segments; body 29 mm long, 19 mm wide, 29 chaetigers). One specimen (CAS 10075) Honolulu, Portloch (Portlock), 9 m, from Steinhart Aquarium, 26 Nov. 1971 (first four elytral pairs removed; right parapodium of chaetiger 13 dissected, basal lobe of cirrophore brownish (kept in container); elytra dark brown with a thin, oblique blackish line towards inner region; basal tubercle of dorsal cirri enlarger, elongate, blackish dorsally; prostomium distorted by eversion of pharynx; jaws with 3 denticles, a fourth barely visible; neurochaetal rows of denticles partially eroded; body 37 mm long, 23 mm wide, 28 chaetigers). One specimen (LACM 7461), Maui, Lahaina District, Kapalua, Kapalua Bay (20°59.98’ N, 156°40.06’ W), 3.6–4.5 m, under large pieces of coral rubble, 18 Jun. 2013, G. Hendler, coll. (elytra brownish, with epibionts, oblique longitudinal line blackish, macrotubercles small, in 10 rows, progressively smaller posteriorly; cirrigerous segments with basal tubercle of dorsal cirrophore projected; body 37 mm long, 22 mm wide, 29 chaetigers). One specimen (LACM AHF 12813), Maui, 1967, J. & D. Soulé, coll. (bent ventrally; some elytra previously removed; elytra dirty yellowish, with epibionts, oblique longitudinal lines better defined in posterior elytra, with 6–7 rows of macrotubercles; cirrigerous segments with basal tubercle of dorsal cirrophore projected; body 21 mm long, 14 mm wide, 29 chaetigers). One specimen (UF 152), off Cook Point (19°28’36.9001” N, 155°56’23.5” W), 5–10 m, under rocks, 4 Nov. 1997, G. Paulay, coll. (right elytron 7 removed, with a marginal bryozoan with a darker core and transparent cortex resembling a subdistal round dark spots in some elytra; with 12 rows of macrotubercles; basal tubercle of dorsal cirrophore pale; neurochaetae with 36–54 transverse rows of denticles; body 42 mm long, 21 mm wide, 29 chaetigers). Red Sea. One specimen (UF 3666), Saudi Arabia, off Thuwai, Shark Reef (22°25’37.2” N, 38°59’45.6” E), 0–20 m, offshore reef, A. Anker, P. Norby, J. Moore & J. Bouwmeester, coll. (complete, left elytron 7 previously removed; elytra yellowish with 1–2 oblique longitudinal black bands; macrotubercles small in 8–9 rows; cirrigerous segments with basal tubercle of dorsal cirrophore not projected; body 23 mm long, 12 mm wide, 29 chaetigers). South Africa. Three specimens (ZMA V 2580), Delagoa Bay, near Johaca Island, Jul. 1935, C.J. van der Horst, coll. (one specimen with most elytra and three median right parapodia previously removed (in separate vial); two other ones markedly bent ventrally; elytra fimbriae long, including some posterior margins parts, especially in regenerating areas; macrotubercles small, in two rows; basal tubercle of dorsal cirrophores projected; neurochaetae unidentate, slightly tapered; non-bent specimen 29 mm long, 14.5 mm wide, 29 chaetigers). Madagascar. One specimen (MNHN A 274-33), 1901–1911, M. Ferlus, coll. (no further data; fixed in ethanol, bent ventrally, regenerating posterior region; most elytra detaching from body; elytra yellowish with 7–8 rows of microtubercles; body 22 mm long, 13 mm wide, 29 chaetigers). One specimen (MNHN IA 2015-162), Cruise Madagascar 2010, RV Miriky, Sta. DW 3238 (14°29´S, 47°27´E), 139– 48 m, 6 Jul. 2009, L. Albenga et al., coll. (bent ventrally; elytra yellowish, with few epibionts, macrotubercles small, conical, in 10 rows; cirrigerous segments with basal tubercle of dorsal cirrophore projected; body 30 mm long, 19 mm wide, 29 chaetigers). Mascarene Islands, La Réunion. One specimen (UF 647), Saint-Paul, Trou d’eau, Passe de l’hermitage (- 21°06’06.0012” S, 55°14’36.9996” E), 9–12 m, fore reef, under rock, 8 Aug. 2007, H. Bruggemann, N. Hubert, F. Michonneau & G. Paulay, coll. (right parapodia of chaetigers 15–17 removed for molecular analysis; elytra golden with about 10 rows of macrotubercles, elytra pairs 1–6 with indistinct black spots, elytra pairs 7–10 with 1–2 oblique thin blackish lines, elytra pairs 11–13 with a single line; neurochaetae with 20–28 transverse rows of denticles; body 33 mm long, 12 mm wide, 28 chaetigers). One specimen (UF 657), Saint-Leu, Sec Jaune (21°09’19.8” S, 55°16’52.0201” E), 10–19 m, rocky slope, basalt blocks, 17 Aug. 2017, H. Bruggemann, N. Hubert & F. Michonneau, coll. (right parapodia of chaetigers 13, 14 removed for molecular analysis; basal tubercle of dorsal cirrophore brownish, a discontinuous spot extended dorsally, base of cirrostyle with a short, slightly longer than wide brownish band; neurochaetae with 40–50 transverse rows of denticles; elytra dark golden, with an oblique black line along elytra pairs 5–13, double in elytra pairs 8–12, right elytron 6 removed, with 12 transverse rows of macrotubercles; ceratophores of lateral antenna and facial tubercle blackish; body 46 mm long, 23 mm wide, 28 chaetigers). Sultanate of Oman. One specimen (UF 10473), Dhofar Governate, Mirbat, Tinawelli,ARMS site 1 (16°56’02.4” N, 54°47’06.0” E), 24 m, rocky and sandy bottom, 24 Jan. 2022, G. Paulay, C. Meyer, S. Maslakova, M. Casterelli & F. Berzoni, coll. (slightly bent ventrally; right parapodia of chaetigers 13–20 previously removed; elytra yellowish, with an oblique longitudinal black band, and a few other ill-defined bands; 9–10 rows of tiny macrotubercles, slightly smaller towards posterior margin; cirrigerous segments with basal tubercle of dorsal cirrophores projected; body 26 mm long, 16 mm wide, 29 chaetigers). Maldives. One specimen (UF 4069), Blue Cove, 1.5 km NNE of Magoodhoo Island (03°05’37.788” N, 72°57’59.4” E), 10–28 m, high coral cover, slope, 6 May 2014, J Moore, coll. (juvenile; left elytron 7 and left parapodium of chaetiger 11 removed for molecular analysis; right elytron 7 and left parapodium of chaetiger 13 removed for observation (kept in container); elytra golden with a series of blackish spots forming two longitudinal discontinuous bands along body; elytron with 3–4 rows of short conical macrotubercles, each with margins rough, with one median spine and 2–3 distal curved spines; basal tubercle of dorsal cirrophore pale; neurochaetae with 14–32 transverse rows of denticles; body 12 mm long, 6 mm wide, 28 chaetigers). Japan. One specimen (UF 383), Okinawa, Ie Island, NE end of Island, area around Crevice and Daidokutsu Cave (26°43’28.4401” N, 127°49’53.94” E), 15–18 m, outer reef slope, under rocks, 7 Jul. 2004, G. Paulay & Kinjo, coll. (slightly bent ventrally; first left and sixth right elytra; anterior appendages blackish; elytra brownish, anterior pairs 1–5 almost without spots, following ones with 1–3 oblique blackish bands, thinner and discontinuous or wider and solid; elytra with 12–14 rows of macrotubercles; neurochaetae with 30–42 transverse rows of denticles; body 31 mm long, 18 mm wide, 28 chaetigers). Three specimens (USNM 100444), Okinawa, Horshoe Cliffs, 1 km WNW off Omna Village (26°30’00” N, 127°50’54” E), 54.9 m, 23 May, 25 Sep. 1981, R.F. Bolland, coll. (anterior appendages blackish; eyes black, anterior and posterior eyes very close to each other laterally; one specimen straight, others bent ventrally; several elytra and parapodia previously removed (kept in container), one with a anteroventral previously made dissection for observing jaws; macrotubercles abundant, in elytra with fewer rows, slightly larger than in Hawaiian specimens; basal pharynx area blackish; jaws with tips brownish, and 3 accessory denticles; body 25–32 mm long, 13–16 mm wide, 28–29 chaetigers). Mariana Islands, Guam. One specimen (UF 21), Sella Bay (13°30’00” N, 144°48’00” E), 5–10 m, patch reef, under hanging Leptoseris coral, 22 Aug. 1984, G. Paulay, coll. (bent ventrally; right elytra 6 and 7 previously removed (only one left in container), left parapodium of chaetiger 14 previously removed (not in container); left parapodium of chaetiger 11 removed for observation (kept in container), basal tubercle of dorsal cirrophore without dark pigmentation; neurochaetae with 42–50 transverse rows of denticles; lateral antennae and facial tubercle pale; body 50 mm long, 22 mm wide, 28 chaetigers). Australia. One specimen (AM W 37302), Woodside Kimberley Survey 2010, Sta. 34, 12 m, 16 Oct. 2010, A. Hosie, coll. (bent ventrally, elytra yellowish with a blackish oblique band, some with white epibionts (bryozoans, ascidians, algae); some posterior elytra previously removed; elytra with two rows of low conical macrotubercles; basal tubercle of dorsal cirrophores projected; neurochaetae unidentate; body 12 mm long, 6.5 mm wide, 28 chaetigers