Haplosyllis ingensicola Lattig, Martin & Aguado, 2010

Lattig, Patricia, Martin, Daniel & Martín, Guillermo San, 2010, Syllinae (Syllidae: Polychaeta) from Australia. Part 4. The genus Haplosyllis Langerhans, 1879, Zootaxa 2552 (1), pp. 1-36 : 17-19

publication ID

https://doi.org/ 10.11646/zootaxa.2552.1.1

DOI

https://doi.org/10.5281/zenodo.5310560

persistent identifier

https://treatment.plazi.org/id/03A487A3-FFA9-FF82-2D99-FCD1B494F9EC

treatment provided by

Felipe

scientific name

Haplosyllis ingensicola Lattig, Martin & Aguado, 2010
status

 

Haplosyllis ingensicola Lattig, Martin & Aguado, 2010 View in CoL

Figs 10A–H View FIGURE 10 , 11A–D View FIGURE 11

Haplosyllis ingensicola Lattig et al. 2010: 792-794 View in CoL View Cited Treatment , figs 3-5.

Examined material. AUSTRALIA: WESTERN AUSTRALIA. 4 specimens AM W36618, Goss Passage, Beacon Island , 28º25'30''S 113º47'E, 8 m, dead plates of Acropora , covered in coralline algae, coll GoogleMaps . P. A. Hutchings, 22 May 1994. 60 specimens AM W36619 (2 specimens mounted for SEM), Lafoutaine Island, Kimberleys , 14º10'S 125º47'E, 15 m, coll GoogleMaps . P. A. Hutchings, 19 July 1988. 105 specimens AM W36620, Lafoutaine Island, Kimberleys , 14º10'S 125º47'E, 15 m, coll GoogleMaps . P. A. Hutchings , 19 July 1988 .

Description. Body fragile, translucent, medium to long sized, 7–13 mm long for 37–53 segments (25–35 in juveniles), widest at proventricle segments, gradually tapering towards posterior end ( Fig. 11A View FIGURE 11 ); with dark brown pigment pattern on palps, prostomium and anterior segments (even preserved), disappearing at proventricle level, becoming pale cream. Prostomium subpentagonal, wider than long, with two pairs of small red eyes in trapezoidal arrangement ( Fig. 10A View FIGURE 10 ). Median antenna inserted on middle of prostomium, twice as long (29–58 articles) as lateral ones (13–23 articles); lateral antennae inserted on anterior margin of prostomium. Palps slightly longer than prostomium, broadly triangular, fused at their bases but separated all along their length ( Fig. 10A View FIGURE 10 ). Sensory organs of ventral side of palps, pharyngeal papillae and nuchal organs not seen. Pharynx pale orange, extending through 6–8 segments; with large anterior tooth, surrounded by crown of about 10 soft papillae and inner ring of cilia. Proventricle cylindrical, pale brown, extending through 3–6 segments, with 33–43 muscle cell rows ( Fig. 10A View FIGURE 10 ). Peristomium well defined, shorter than subsequent segments. Antennae, tentacular cirri and dorsal cirri long, slender, whip shaped. Dorsal tentacular cirri twice as long (21–33 articles) as ventral ones. Anterior dorsal cirri very long (some twice as long as body width), with a well-defined length pattern: first longer than remaining ones (32–63 articles), second shorter (as long as body width, for 12–20 articles), third and fourth intermediate, longer than second (19–24 and 32–42 articles, respectively), fifth shorter (14–24 articles), sixth intermediate (24–42) ( Fig. 10A View FIGURE 10 ). Median cirri alternating long (17–41) and short (11–18), slightly decreasing in length towards posterior end ( Fig. 10B View FIGURE 10 ). Ventral cirri digitiform, anterior ones longer and wider than median and posterior ones, slightly longer than parapodial lobes. Chaetae all bidentate, 2–3 per parapodia, apical teeth long, distal one slightly shorter than proximal tooth; anterior chaetae ( Figs 10C View FIGURE 10 ; 11B View FIGURE 11 ) with 2–3 rows of short spines on US of MF; LMF similar in length than SW; MJP short and curved. Median and posterior chaetae ( Figs 10D, E View FIGURE 10 ; 11C–D View FIGURE 11 ) with short, eroded spines on US of MF; LMF longer than SW; MJP straight. Anterior parapodia with 1–2 aciculae, straight ( Fig. 10G View FIGURE 10 ), and with curved tip bent at 90º ( Fig. 10F View FIGURE 10 ); one acicula in median and posterior parapodia, broader than chaetae, with curved tip bent at 90º ( Fig. 10H View FIGURE 10 ). Pygidium with two long anal cirri (13–15 articles).

Reproduction. Not known.

Remarks. Haplosyllis ingensicola is easily identified by the whip-shaped cirri, longer than body width, the brown pigment pattern on anterior region and the median and posterior broad acicula with curved tip. The apparently cannibalistic behaviour reported for the Indonesian population ( Lattig et al. 2010), has not been observed within the Australian one.

Distribution. AUSTRALIA (Western Australia); INDONESIA (Java and Sulawesi).

AM

Australian Museum

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Phyllodocida

Family

Syllidae

Genus

Haplosyllis

Loc

Haplosyllis ingensicola Lattig, Martin & Aguado, 2010

Lattig, Patricia, Martin, Daniel & Martín, Guillermo San 2010
2010
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