Nereimyra, WOODSHOLEA

Pleijel, Fredrik, Rouse, Greg W. & Nygren, Arne, 2012, A revision of Nereimyra (Psamathini, Hesionidae, Aciculata, Annelida), Zoological Journal of the Linnean Society 164 (1), pp. 36-51 : 46-48

NEREIMYRA WOODSHOLEA

( HARTMAN, 1965) ( FIGS 6 , 7 )

Neopodarke woodsholea Hartman, 1965: 69 , pl. 7.

Nereimyra woodsholea Pleijel, 1998: 119–122 , 160; Nygren et al., 2005: 273–276.

Nereimyra punctata Schram & Haaland, 1984: 169– 181 , figs 1–14, in part.

Type material: Holotype ( LACM –AHF Poly 0132) and 6 paratypes ( LACM –AHF Poly 0133).

Type locality: North Atlantic , slope off Middle Atlantic Bight, 39°58′24″N, 70°40′18″W, 300 m, 28.viii.1962 .

Material examined: NORTH ATLANTIC, SLOPE OFF MIDDLE ATLANTIC BIGHT. Holotype ( LACM –AHF poly 0132), E upper end of Block canyon, 39°58′24.8N, 70°40′18W, 300 m, 6 paratypes ( LACM –AHF Poly 0133), same locality. 1 spm ( SMNH 76998; fixed in 95% ethanol), slope off Middle Atlantic Bight, 39°53.879′N, 69°39.38′W, 591 m, coll. A. N. 15.vi.2003. NORWAY. 5 spms (F. P.’s collection; fixed in 95% ethanol, formaldehyde and osmium tetraoxide), Trondheimsfjord, Rødberg, 63°28.26′N 10°00.04′E, 500– 250 m, dead Lophelia , dredge, coll. F. P. 21–25.viii.1995; 3 spms ( SMNH 76985, 76986, 76988; fixed in 95% ethanol), Trondheimsfjorden, Rødberg, 63°28.36′N, 10°00.04′E, 180–250 m, coll. F. P. 29.i.2002;1 spm ( SMNH 76987), Trondheimsfjorden, Rødberg, 63°28.36′N, 10°00.04′E, dead Lophelia , dredge, 180–250 m, coll. F. P. 18.ii.2003; 12 spms (F. P.’s collection; fixed in 95% ethanol, formaldehyde, and osmium tetraoxide), Trondheimsfjorden, Rødberg, 63°28.093′– 63°28.329′N, 09°59.990′ 09°59.982′E, c. 200 m, dead Lophelia , dredge, coll. F. P. 5.xii.2006; 2 spms (F. P.’s collection; fixed in 95% ethanol), Trondheimsfjorden, Rødberg, 63°28.458′– 63°28.508′N, 10°00.186′– 10°00.192′E, 187–200 m, dead Lophelia , dredge, coll. F. P. 7.v.2003. SWEDEN. 4 spms ( SMNH 76981–76984; fixed in 95% ethanol), Gullmarsfjorden, Djuphålan, 58°19.50′N, 11°32.50′E, 116 m, detritus sledge, coll. F. P. 5.iv.2003; 50 + spms (F. P.’s collection; fixed in 95% ethanol, formaldehyde and osmium tetraoxide), same locality and date; 30 + spms (F. P.’s collection; fixed in 95% ethanol, formaldehyde and osmium tetraoxide), various localities in Kosterhavet, coll. F. P. 2000–2009.

Description: Length up to 23 mm for 45 segments. Live specimens yellowish transparent ( Fig. 6 ), ventrally on posterior segments often with broad, dark longitudinal band. A few notochaetae usually present

from about segment 12 ( Fig. 7E ). In all other features agreeing with the description of N. punctata above.

Remarks: The description and illustrations above are based on Swedish specimens, as these were in much better condition than the type material and could also be studied alive and by SEM. They agree both with the types from the Middle Atlantic Bight and a newly collected topotype, and, based on COI analyses by Nygren et al. (2005) and this study, the types and the Swedish populations are conspecific.

Figures

Figure 6. Nereimyra woodsholea, dorsal view of live relaxed spm from Kosterhavet, Sweden. Exact scale unknown but visible section of specimen is c. 35 mm long.

Figure 7. Nereimyra woodsholea, scanning electron microscopy photographs of specimens from Kosterhavet, Sweden. A, anterior end, dorsal view. B, anterior end, ventral view. C, parapodia segment 2–5, right side, ventral view. D, proboscis. E, median parapodium, right side, anterodorsal view. F, median parapodium, left side, anteroventral view. Scale bars: A, C–E = 300 Mm, B = 600 Mm, F = 100 Mm.