Syllides tam, San Martin & Hutchings, 2006

San Martin, G & Hutchings, PA, 2006, Eusyllinae (Polychaeta: Syllidae) from Australia with the Description of a New Genus and Fifteen New Species, Records of the Australian Museum 58, pp. 257-370: 363-365

publication ID

2201-4349

persistent identifier

http://treatment.plazi.org/id/038287B3-A26B-FFA6-AE0F-214AFC1FFEF2

treatment provided by

Felipe

scientific name

Syllides tam
status

n.sp.

Syllides tam   n.sp.

Figs 86A,B, 90A–G

Syllides longocirrata   .— Augener, 1913: 229.— Haswell, 1920: 102.—Hutchings & Murray, 1984: 33. Not Örsted, 1845: 11.

Material examined. HOLOTYPE ( AM W28472 View Materials ) AUSTRALIA: NEW SOUTH WALES: 1.5 km SE of Dangar Is., Hawkesbury R., 33°33'S 151°14'E, sandy mud, 7 m, coll. Jones & party, 21 Aug 1980 GoogleMaps   . PARATYPES. 50 m NE of Green Point, Hawkesbury R., 33°33.5'S 151°14.5'E, sandy mud, 4 m, coll. A.R. Jones & party, 17 May 1982, 1 ( AM W24704 View Materials ) GoogleMaps   ; 300 m NE of Green Point, Hawkesbury R., 33°34'S 151°13.5'E, sandy mud, 5 m, coll. A.R. Jones & A. Murray, 18 Nov 1980, 1 ( AM W28463 View Materials ) GoogleMaps   ; 1 km S of E end, Spectacle Is. , Hawkesbury R., 33°32'S 151°07.5'E, muddy sand, 12 m, coll. A.R. Jones & A. Murray, 5 Aug 1983, 1 ( AM W28464 View Materials ) GoogleMaps   ; 1 km S of E end, Spectacle Is. , Hawkesbury R., 33°32'S 151°07.5'E, muddy sand, 12 m, coll. A.R.Jones & A.Murray, 11 Nov 1983, 1 ( AM W28465 View Materials ) GoogleMaps   ; 1 km SE of Dangar Is., Hawkesbury R., 33°33'S 151°14'E, shelly mud, 9 m, coll. A.R. Jones & party, 1 Aug 1979, 1 ( AM W28466 View Materials ) GoogleMaps   ; 1 km SE of Dangar Is., Hawkesbury R., 33°33'S 151°14'E, shelly mud, 9 m, coll. A.R. Jones & party, 21 Aug 1980, 1 ( USNM 1082992 View Materials ) GoogleMaps   ; 30 m SE of Brooklyn boat-channel, Hawkesbury R., 33°33'S 151°14'E, shelly mud, 7 m, coll. A.R. Jones & party, 18 Dec 1979, 1 ( LACM ex AM W28469 View Materials ) GoogleMaps   ; 30 m SE of Brooklyn boat-channel, Hawkesbury R., 33°33'S 151°14'E, shelly mud, 7 m, coll. A.R. Jones & party, 1 Aug 1979, 1 ( AM W28470 View Materials ) GoogleMaps   ; 1.5 km SE of Dangar Is., Hawkesbury R., 33°33'S 151°14'E, sandy mud, 7 m, coll. A.R. Jones & party, 1 Aug 1979, 3 ( AM W28471 View Materials ) GoogleMaps   ; 1.5 km SE of Dangar Is., Hawkesbury R., 33°33'S 151°14'E, sandy mud, 7 m, coll. A.R. Jones & party, 18 Dec 1979, 1 ( AM W28473 View Materials ) GoogleMaps   ; Brooklyn boat-channel, Hawkesbury R., 33°33'S 151°14'E, fine mud, 3 m, coll. A.R.Jones, 16 May 1980, 1 ( AM W28474 View Materials ) GoogleMaps   ; Midway   between Green Point and Croppy Point, Hawkesbury R., 33°33.5'S 151°14.5'E, mud, 6 m, coll. A.Jones & party, 22 Nov 1980, 1 ( AM W196517) GoogleMaps   ; E end Brooklyn boat channel, 1 ( AM W196518)   ; Liverpool Reach , Hawkesbury R., 33°25'S 150°56'E, fine sand, 4 m, coll. A. Jones & party, 21 Feb 1980, 1 ( AM W196657) GoogleMaps   ; Liverpool Reach , Hawkesbury R., 33°25'S 150°56'E, coarse sand, 20 m, coll. A.Jones & party, 21 Feb 1980, 3 ( AM W196658) GoogleMaps   ; Liverpool Reach , Hawkesbury R., 33°25'S 150°56'E, coarse sand, 20 m, coll. A. Jones & party, 21 Feb 1980, 21 ( AM W196659) GoogleMaps   .

Additional material examined. QUEENSLAND: At mouth of Althaus Creek, Halifax Bay, 19°10'S 146°36'E, 2 m, coll. Queensland Nickel, Jan 1977, 2 ( AM W28207 View Materials ) GoogleMaps   . NEW SOUTH WALES: 0.5 km E. of Dangar Is ., Hawkesbury R., 33°33'S 150°14'E, coll. A. Jones & party, 21 Aug 1980, 4 on SEM stub ( AM W196520) GoogleMaps   ; S of airport runway extension, Botany Bay , 33°58.13'S 151°11.16'E, 5 m, coll. Australian Museum party, 7 Apr 1992, 1 ( AM W21631 View Materials ) GoogleMaps   ; SW of airport runway extension, Botany Bay , 33°58.33'S 151°10.22'E, 7 m, coll. Australian Museum party, 28 July 1992, 1 ( AM W21632 View Materials ) GoogleMaps   ; E of Marley , 34°08.08'S 151°09.65'E, sand, 60 m, coll. Fisheries Research Institute (NSW), 2 May 1991, 1 ( AM W24377 View Materials ) GoogleMaps   ; Bass Point , 34°36'S 150°54'E, 50 m, coll. The Ecology Lab for RMI / Pioneer Project, 1 Feb 1990, few ( AM W22994 View Materials ) GoogleMaps   ; Montagu Roadstead , Jervis Bay, 35°02.2'S 150°46'E, 12 m, coll. P.A. Hutchings & party, 6 Jun 1991, 1 ( AM W27574 View Materials ) GoogleMaps   . VICTORIA: Port Phillip Bay , 38°09.3'S 144°42.7'E, sand, 3 m, coll. Marine Pollution Studies Group, 11 Jun 1971, 2 ( AM W16236 View Materials ) GoogleMaps   .

Description. Body about 2.4 mm long, 0.2 mm wide, with 30 chaetigers. Prostomium oval, slightly wider than long; 4 eyes arranged in open trapezoidal pattern and 2 anterior eyespots; median antenna inserted between posterior eyes, about one and half times combined length of prostomium and palps, lateral antennae about two thirds of length of median antenna, inserted near anterior eyes ( Fig. 90A). Palps similar in length to prostomium, without distal papillae. Peristomium slightly shorter than subsequent segments, with hyaline, rounded inclusions; dorsal tentacular cirri similar to median antenna, slightly shorter; ventral tentacular cirri about two thirds length of dorsal ones ( Fig. 90A). Antennae, tentacular, and dorsal cirri of chaetigers 1 and 2, elongate, slender; dorsal cirri of chaetiger 1 longer than median antenna, those of chaetiger 2 shorter than those of chaetiger 1, similar in length to median antenna. Dorsal cirri of subsequent segments alternating irregularly with long cirri, distinctly longer than body width, with about 10–12 articles; short cirri, similar in length to body width, with about 6–7 articles; articles pyriform, usually with 1 dark inclusion ( Fig. 90A). Parapodial lobes elongated, conical, distally bilobed ( Fig. 90C). Ventral cirri digitiform, similar in length to parapodial lobes. Compound chaetae similar throughout, shafts with several, long, fine, subdistal spines, and elongated, bidentate blades, within fascicle 5 pairs of chaetae, each pair similar in shape and length ( Fig. 90D– G). Blades of most dorsal pair of compound chaetae with single long, distinct basal spur, and moderate, thin spines on margin, about 60–62 µm long; blades of second pair similar to those of most dorsal pair, but shorter, about 52 µm long, with shorter spines on margin ( Figs 90D, 86A). Blades of subsequent pairs without basal spur and having short spines on margin ( Fig. 90E–G), 40, 27 and 15 µm in length respectively. Dorsal simple chaetae from chaetiger 1, unidentate, distally blunt, provided with distal hood and short spines on margin (under light microscope) ( Fig. 90H); under SEM, hood consists of several rows of minute spines ( Fig. 86B). Ventral simple chaetae absent. Acicula solitary, distally knobbed ( Fig. 90I). Pharynx through 5–6 segments ( Fig. 83A). Proventricle barrel-shaped, through about 5–6 segments, with 35 muscle cell rows. Pygidium small, semicircular, with 2 short, smooth lateral anal cirri and 1 median, longer cirrus ( Fig. 90B).

Remarks. This species has been reported in Australia as Syllides longocirrata ( Örsted, 1845)   , which only occurs in the Northern Atlantic and Northern Pacific areas, and differs from the Australian specimens, which are described as a new species. Syllides longocirrata   has dorsal simple chaetae that are pointed and without a hood, and the compound chaetae are unidentate (see Banse, 1972), whereas the compound chaetae of Syllides tam   are distally blunt and hooded. Syllides japonicus Imajima, 1966   (see below) and S. floridanus Perkins, 1981   , also have dorsal simple chaetae that are pointed, and without a hood ( Perkins, 1981), which differ from those present in Syllides tam   .

Habitat. Occurring in coarse, medium to muddy sand; from intertidal to 60 m.

Distribution. Australia (Queensland, New South Wales, Victoria).

Etymology. The species is named after The Australian Museum.

AM

Australian Museum

LACM

Natural History Museum of Los Angeles County

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Phyllodocida

Family

Syllidae

Genus

Syllides

Loc

Syllides tam

San Martin, G & Hutchings, PA 2006
2006
Loc

Syllides longocirrata

Haswell, W 1920: 102
Augener, H 1913: 229
Orsted, A 1845: 11
1913