Pectinaria kanabinos Hutchings & Peart, 2002

Zhang, Jinghuai & Hutchings, Pat, 2019, A revision of Australian Pectinariidae (Polychaeta), with new species and new records, Zootaxa 4611 (1), pp. 1-70: 54-58

publication ID

https://doi.org/10.11646/zootaxa.4611.1.1

publication LSID

lsid:zoobank.org:pub:178FED38-5FEA-417F-B5DC-807D943B641C

persistent identifier

http://treatment.plazi.org/id/586F0669-FFBC-FFB5-FF7B-FAC0BEE72B71

treatment provided by

Plazi

scientific name

Pectinaria kanabinos Hutchings & Peart, 2002
status

 

Pectinaria kanabinos Hutchings & Peart, 2002  

Figs 29–30 View FIGURE 29 View FIGURE 30 , Table 3

Pectinaria kanabinos Hutchings & Peart, 2002: 99 – 127   , figs 11 – 12 & 16 – 17.

Material examined. Australia: Queensland: Holotype AM W.25616, Calliope River , N of Gladstone, 24°01’S 150°59’E, coll. P. Saenger, 24 Jun 1975 GoogleMaps   ; Paratype AM W.8534, 1 spec., Calliope River , N of Gladstone, 24°01’S 150°59’E, coll. P. Saenger, 24 Jun 1975 GoogleMaps   ; Paratype AM W.8535, 1 spec., Calliope River , N of Gladstone, 24°01’S 150°59’E, coll. P. Saenger, 24 Jun 1975 GoogleMaps   .

Additional material examined. Australia: Queensland: AM W.202176, 1 spec., Halifax Bay , 19°07’S 146°33’E, 2 m, coll. Queensland Nickel Pty Ltd, Jan 1977 GoogleMaps   ; AM W.202175, 2 specs, Halifax Bay , 19°09’S 146°37’E, 5 m, coll. Queensland Nickel Pty Ltd, Jan 1977 GoogleMaps   ; AM W.202174, 1 spec., Halifax Bay , 19°10’S 146°38’E, 5 m, coll. Queensland Nickel Pty Ltd, Jan 1977 GoogleMaps   ; AM W.202178, 1 spec., Halifax Bay , 19°10’S 146°38’E, 5 m, coll. Queensland Nickel Pty Ltd, Jan 1977 GoogleMaps   ; AM W.10267, 1 spec., Calliope River, 23°49’S 151°13’E, coll. P. Saenger, 07 Oct 1975 GoogleMaps   ; AM W.13441, 2 specs (1 spec. mounted for SEM), Calliope River , Gladstone , 23°51’S 151°10’E, coll. P. Saenger, Aug 1976 GoogleMaps   ; AM W.13442, 1 spec., Gladstone , Calliope River , 23°51’S 151°10’E, coll. P. Saenger, Aug 1976 GoogleMaps   ; AM W.51422, 6 specs, Calliope River , Gladstone , 23°51’S 151°10’E, coll. P. Saenger, 1974 GoogleMaps   . Western Australia: MV F134632, 1 spec., Northwest Shelf, between Port Hedland and Dampier, 19°37’S 118°53’E, 30 m, coll. Poore, Gary C., Lew Ton, Helen M., Jun 1983 GoogleMaps   ; AM W.27510, 1 spec., Dampier Archipelago , 20°31’S 116°39’E, coll. G.C.B. Poore, Feb 1969 GoogleMaps   .

Additional material (but not measured). Australia: Queensland: AM W.30913, 1 spec., Cairns, Marlin Marina , 16°52’S 145°49’E, coll. CRC Reef Research Centre Ltd, 17 Nov 2001 GoogleMaps   ; AM W.202184, 1 spec., Halifax Bay , 19°07’S 146°33’E, 2 m, coll. Queensland Nickel Pty Ltd, Jul 1977 GoogleMaps   ; AM W.202186, 1 spec., Halifax Bay , 19°09’S 146°37’E, 5 m, Queensland Nickel Pty Ltd, Jul 1977 GoogleMaps   ; AM W.202185, 1 spec., Halifax Bay , 19°10’S 146°44’E, 5 m, coll. Queensland Nickel Pty Ltd, Jul 1977 GoogleMaps   ; AM W.51422, 74 specs, Calliope River, Gladstone , 23°51’S 151°10’E, coll. P. Saenger, 1974 GoogleMaps   .

Description. Based on all specimens measured. Preserved specimen pale or reddish in colour, conical in shape ( Fig. 29A, B View FIGURE 29 ). Body length 5.2 – 22.6 mm (holotype 14.0 mm) including paleae and scaphe, width 0.5 – 4.1 mm (holotype 2.3 mm) at cephalic regions.

Cephalic veil oval, free from operculum, with 10 – 18 (holotype 18) smooth cirri on anterior margin and 2/3 of lateral margin ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ). Pair of ear-shaped lobes adjacent to both sides of dorsal base of cephalic veil. Buccal tentacles long with wide longitudinal grooves, arising posterior to cephalic veil ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ).

Operculum semicircular; dorsal and lateral margins well developed, smooth; ventral margin (opercular ridge) with 9 – 14 (holotype 10) pairs of golden paleae, curved dorsally, acute with extended tips ( Figs 29A, D, F View FIGURE 29 ; 30A View FIGURE 30 ).

First pair of tentacular cirri extending beyond tips of paleae, with annuli, arising from connection of opercular margin and paleal ridge ( Figs 29A View FIGURE 29 ; 30A, C View FIGURE 30 ). Pair of small ventral lappets present behind tentacular cirri near cephalic veil on segment 1. Ventral region of segment 1 covered by buccal tentacles and ventral lobe of segment 2 ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ).

Second pair of tentacular cirri extending beyond opercular margin, with annuli, on almost latero-median connecting ridge of segment 2, inserted more dorsally than 1 st pair of tentacular cirr ( Figs 29B, F View FIGURE 29 ; 30A View FIGURE 30 ). Segment 2 with ventral lobes as pair of broad ventro-lateral lobes separated by grooves from base of 2 nd pair of tentacular cirri, and narrow mid-ventral lobe about 1/4 width of ventro-lateral lobes ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ). Segment 2 without dorsal lobe ( Figs 29A, D, F View FIGURE 29 ; 30A View FIGURE 30 ).

Comb-like branchiae on segments 3 – 4, consisting of series of dense, flat lamellae ( Figs 29D, F View FIGURE 29 ; 30A View FIGURE 30 ). Branchiae on segment 3 larger and inserted more ventrally than those of segment 4. Pair of small dorso-lateral glandular pads present adjacent to branchiae on segments 3 – 4 ( Figs 29D, F View FIGURE 29 ; 30A View FIGURE 30 ).

Distinct ventral glandular lobes present on segments 3 – 6, becoming progressively more lateral and broader on segments 3 – 5 ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ). Hump present near branchiae on segment 4. Segment 3 with broad ventral lobe, higher at mid-line. Segments 4–5 each with pair of broad ventro-lateral lobes and mid-ventral lobe about 1/2 width of ventro-lateral lobes, separated from those by shallow grooves. Segment 6 with pair of broad ventral lobes with continuous papillae, separated from each other by deep mid-ventral notch ( Figs 29B – C View FIGURE 29 ; 30C View FIGURE 30 ).

Notopodia other than those of segment 1 which bear paleae, on segments 5 – 21 (17 pairs), each bearing two kinds of notochaetae; one short and winged from anterior row, bordered with serrations along distal portion, covered progressively with more spines from about middle to front of wing, on anterior surface; other long, stout and straight from posterior row, tapering to pointed tip, covered progressively with more spines from mid-anterior portion to tip, on anterior surface ( Figs 29A – D View FIGURE 29 ; 30E – F View FIGURE 30 ). Neuropodia, 13 pairs on segments 8 – 20, each with slightly raised torus with transverse row of uncini; each uncinus with U-shaped anterior peg embedded into torus, several rows of minor teeth, and four longitudinal rows of major teeth, each with 7 – 8 teeth ( Figs 29F View FIGURE 29 ; 30G View FIGURE 30 ). Segment 21 with pair of ventro-lateral lobes near notopodia.

Scaphe wide ovoidal, flattened dorsally, divided into four anterior narrow lobes and two posterior rounded lobes on each lateral margin; posterior margin with poorly marked rounded lappets near anal flap ( Figs 29A – D, F View FIGURE 29 ; 30B View FIGURE 30 ). Anal flap long tongue with marginal cirri and short anal cirrus. Scaphal hooks 2 – 5 (holotype 5, other material usually 3) pairs, amber, distinctly bent towards pointed tip ( Fig. 30B, D View FIGURE 30 ).

Tube with wide opening, slightly curved, fragile wall made of yellow proteinaceous glue and large sand grains ( Fig. 29E View FIGURE 29 ).

Methyl Green stained body distinctly green on cirri of cephalic veil, ventral lobes of segments 2–6, base of 2 nd pair of tentacular cirri, dorso-lateral pads of segments 3–4, ventro-lateral regions adjacent to neuropodia on segments 20–21, ventro-median region between segment 21 and scaphe, and ventro-lateral regions on posterior end of scaphe ( Fig. 29 View FIGURE 29 ).

Distribution. Queensland and NW Western Australia ( Fig. 1 View FIGURE 1 ).

Habitat. Found in shallow waters and estuarine conditions.

Remarks. We have expanded the original description of Pectinaria kanabinos Hutchings & Peart, 2002   , and provided additional images of the holotype and details on morphological characters which were not included in the original description. These include a pair of lateral ear-shaped lobes adjacent to both sides of dorsal base of cephalic veil, pair of small ventral lappets on segment 1, pair of small dorso-lateral glandular pads on segments 3 and 4, ventral lobes on segments 3–6, U-shaped anterior peg on uncini and four longitudinal rows of major teeth, and revision of scaphe. Pectinaria kanabinos   has more paleae in larger individuals; the number of cirri of cephalic veil and scaphal hooks does not significantly increase with body size ( Fig. 31 View FIGURE 31 ). Pectinaria kanabinos   can be easily distinguished with all other Pectinaria   species by having a long anal flap with cirri on the lateral and posterior margins ( Table 3). Pectinaria kanabinos   and P. dodeka   often occur in the same localities ( Fig. 1E – F View FIGURE 1 ). They are very similar as both have continuous papillae on ventral lobes of segment 6, paleae with extended pointed tips, well marked dorso-lateral pads on segments 3 – 4 and a few pairs of scaphal hooks with distinctly curved tips. But they differ from P. dodeka   which has an anal flap with smooth margins and 2 – 3 longitudinal rows of major teeth on uncini, whereas P. kanabinos   has a long anal flap with cirri on lateral and posterior margins and four longitudinal rows of major teeth on uncini.

AM

Australian Museum

MV

University of Montana Museum

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Terebellida

Family

Pectinariidae

Genus

Pectinaria

Loc

Pectinaria kanabinos Hutchings & Peart, 2002

Zhang, Jinghuai & Hutchings, Pat 2019
2019
Loc

Pectinaria kanabinos

Hutchings & Peart 2002: 99
2002