Pseudobranchiomma punctata, (Treadwell, 1906), 2002

Nogueira, J. M. M. & Knight-Jones, Phyllis, 2002, A new species of Pseudobranchiomma Jones (Polychaeta: Sabellidae) found amongst Brazilian coral, with a redescription of P. punctata (Treadwell, 1906) from Hawaii, Journal of Natural History 36 (14), pp. 1661-1670 : 1663-1664

Pseudobranchiomm a punctata ( Treadwell, 1906)

(gure 1)

Laonome punctata Treadwell, 1906: 1179 , gures 76, 77, Hawaii, 10 paratypes, about half with crown detached, from Waialua Reef, Oahu, Hawaii, AMNH 1902-344 (type not examined, also from Waialua USNM 5223). Hartman, 1959: 548, referred the species to Sabellastarte indica ( Savigny, 1822, as Sabella Astartae , a tribe; Krøyer (1856: 13) regularized the name as the genus Sabellastarte, Knight-Jones and Mackie , in press).

Pseudobranchiomma punctata ( Treadwell, 1906) new combination, Knight-Jones and Mackie (in press).

The following description is based on the largest complete paratype. First data in parentheses refer to a larger incomplete paratype and data in quote marks are from Treadwell’s 1906 paper, based mainly on the holotype.

Description. Thorax and abdomen 15 (20, ‘21’) mm long, 2 (3, ‘3’) mm wide; radiolar crown a further 6 (8, ‘10’) mm long (gure 1A), crown base with 19 (‘25’) colourless radioles, external anges reduced (gure 1E, F), without serrations or compound eyes; each side of crown base involuted ventrally to a near circle; radioles webbed for 0.5 mm of radiolar length; radiolar tips short and blunt; dorsal lips 2.5 mm long (gure 1H dl); thorax as long as or longer than broad, with ve to eight (‘ ve to nine’) segments, sometimes with diVerent numbers of parapodia on right and left sides of thorax; dorsal collar margins fused to sides of midline faecal groove (gure 1D), forming vestigial anking pockets each side, lateral collar margins above junction of crown and thorax (gure 1B), ventral collar extending as two fairly prominent lappets divided by a midline cleft with short parallel lamellae leading to two small ventral sacs (gure 1C); anterior margins of rst ventral shield indistinct; rst ventral shield (without collar and in lateral view) scarcely longer than following shields, lateral margins of this and following shields well de ned; anterior thoracic torus not abutting adjacent ventral shield (gure 1B), but other thoracic tori touching posterior ventral shields (gure 1C); posterior thoracic torus about twice length of rst abdominal torus; left fascicle 6 with 20 chaetae (in all); superior chaetae (many broken), scarcely geniculate with knee not much wider than shaft; inferior chaetae more geniculate, knee 1.5 Ö width of shaft (gure 1J); abdominal inferior chaetae similar (gure 1N), about 6 in segment 3 of abdomen, superior chaetae small, very slender and sparse (gure 1C insert); thoracic uncini (23 in torus 6) with four to six rows of teeth (side view) across crest, distance between shaft and breast much shorter than breast to crest (gure 1L); abdominal uncini (8 in torus 3

1664 J. M. M. Nogueira and P. Knight-Jones on left) similar (gure 1M); body pale with scattered, indistinct, irregular, brown (‘purple’) spots, more condensed towards collar; radioles with ‘basal portion ... more than half length, deep purple’, the remainder with ‘irregularly alternating bands of white, yellow and purple’ (these colours were not distinguishable in the long