Polycirrus rosea Hutchings & Murray, 1984

Glasby, Christopher J. & Hutchings, Pat, 2014, Revision of the taxonomy of Polycirrus Grube, 1850 (Annelida: Terebellida: Polycirridae), Zootaxa 3877 (1), pp. 1-117 : 99-101

Polycirrus rosea Hutchings & Murray, 1984

Fig. 56a–e

Polycirrus rosea Hutchings & Murray, 1984: 91–92 , fig. 15, 1–5.

Type locality. Hawkesbury River , NSW, Australia .

Material examined. HOLOTYPE: AM W196900 , Australia, New South Wales, Hungry Beach, Hawkesbury River , 33°35ʹ S, 151°17ʹ E, coll. 13.xii.1979.

Description. Holotype complete, 8 mm long, 5 mm wide.

Dorsum anteriorly smooth. Venter anteriorly with mid-ventral groove and discrete ventro-lateral pads; pads more-or-less smooth, extending from segment 3 to 12. Mid-ventral groove from segment 3.

Buccal tentacles of two types, few remaining: (1) cylindrical, thickened distally and distinctly grooved and (2) cylindrical, uniformly thin and weakly grooved, both arising dorsally on prostomial ridge. Prostomial ridge slightly curved, not extending laterally. Upper lip comprising single (medial), circular-shaped lobe only, margin of lobe convoluted; oral surface glandular, ciliated, with grooves leading to mouth. Inner lower lip circular; outer region flat, shield-like, oblong, wider than long, smooth, extending posteriorly to segment 3. Achaetous segments visible entirely as distinct rings ( Fig. 56a, b ).

Notochaetigerous segments 10, extending to segment 12. Notopodia more-or-less rectangular, prechaetal lobe low, postchaetal lobe very small, digitiform, longer than prechaetal. Notochaetae within a chaetiger consisting of one type, gradually elongating from dorsal to ventral, smooth, narrowly winged, uniformly tapered, posteriorly same form as those anteriorly ( Fig. 56d ). Neurochaetae beginning on segment 10, 3–10 uncini per row, numbers highest on posterior segments. Neuropodial tori erect, rectangular pinnules, very small initially, becoming prominent on posterior body ( Fig. 56c ). Uncini with short neck and straight to convex base (Type 1), teeth above main fang arranged in double transverse series (MF:6:5), enlarged median tooth above main fang absent, subrostral process present as low protuberance ( Fig. 56e ).

Nephridial papillae not visible.

http://australianmuseum.net.au/Uploads/Journals/16834/101_complete.pdf

Figures

FIGURE 56. Polycirrus rosea Hutchings & Murray. a. Anterior end, dorsal vie.; b. Anterior end, ventral view. c. Posterior end, lateral view. d. Notochaeta. e. Uncinus, dorsal view and lateral view. Scales a, b, c=0.5 mm, e=0.01 mm, d=0.1 mm. Reproduced with permission from Hutchings and Murray (1984).