Leitoscoloplos abranchiatus ( Hartman, 1967 )

Blake, James A., 2017, Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America, Zootaxa 4218 (1), pp. 1-145 : 18-19

publication ID

https://doi.org/ 10.5281/zenodo.245827

publication LSID

lsid:zoobank.org:pub:9345C596-8656-4B5C-AD8C-2FACF4E9240C

DOI

https://doi.org/10.5281/zenodo.4901743

persistent identifier

https://treatment.plazi.org/id/8F2387DD-0604-091F-FF31-F9FFFCA4FD67

treatment provided by

GgServerImporter

scientific name

Leitoscoloplos abranchiatus ( Hartman, 1967 )
status

 

Leitoscoloplos abranchiatus ( Hartman, 1967) View in CoL

Figure 6 View FIGURE 6 A–C

Haploscoloplos abranchiatus Hartman, 1967: 103 –104; Rozbaczylo 1985: 129. Haploscoloplos View in CoL sp. Hartman 1978: 156 (in part, Sta. 69-21).

Leitoscoloplos abranchiatus: Mackie 1987: 720 View in CoL .

Material examined: Scotia Sea, West Scotia Basin , Falkland Islands, Eltanin Sta. 6-350, 2452m, Menzies trawl (3, USNM 56455 View Materials ) . —off Cape Horn, Eltanin Sta. 4-112, 20 Jul 1962, 55.52°S, 61.92°W, 4008 m, holotype and 7 paratypes, ( USNM 55531–2 View Materials ) GoogleMaps . —off Tierra del Fuego, R/V Vema Sta. V- 17-56, 4006 m, (1, LACM-AHF Poly 5010) South Shetland Islands, Eltanin Sta. 4-138, 1437 m (3, USNM 56454 View Materials ) .—off South Georgia, Eltanin Sta. 9- 711, 2983– 3331 m (1, USNM 60630).—Drake Passage, Eltanin Sta. 9-740, 384– 494 m (1, USNM 61944 View Materials ).— South Orkney Islands, Eltanin Sta. 6-1082, 298 302 m (1, USNM 60631 View Materials ).— Weddell Sea, Antarctica , Glacier Sta. 69 - 21, 2288 m (1, USNM 61945). — Weddell Sea , ANDEEP III ANT XXII- 3 , R/ V Polarstern, Sta. PS-67/078 - 6, 2168 m (1, SEM, JAB); Weddell Sea, abyssal plain, ANDEEP SYSTCO ANT XXIV-2, R/V Polarstern, Sta. 33- 14, 5338 m, 6 specimens ( ZMH P-27794).— South Pacific Ocean , Albatross Cordillera, Eltanin Sta. 14-1250, 3638 – 3825 m (2, USNM 60632).

Description. A small species, up to 18 mm long, 1.0 mm wide for about 30 setigerous segments. Prostomium conical, narrowly rounded on anterior margin ( Fig. 6 View FIGURE 6 A); peristomium deeply folded, with 2–3 superficial annuli. Thoracic region with 9–13 setigers. Thoracic parapodia with short, conical noto- and neuropodial postsetal lobes. Abdominal parapodia only weakly elevated dorsally; with short, fingerlike notopodial postsetal lobes; neuropodia flattened, prolonged, rectangular in shape, distally entire ( Fig. 6 View FIGURE 6 B). Thoracic parapodia with fascicles of long crenulated capillaries; abdominal notopodia with capillaries and 1–2 furcate setae, each with unequal tynes connected by row of thin needles ( Fig. 6 View FIGURE 6 C). Branchiae entirely absent. Pygidium unknown.

Remarks. This species was well described by Hartman (1967) and is illustrated here for the first time. Leitoscoloplos abranchiatus is readily differentiated from related forms by the numerous long, silky appearing capillaries of the thoracic region, the complete absence of branchiae, and abdominal parapodia that are lateral or only weakly elevated.

Distribution. Subantarctic and Antarctic seas, 1400–5338 m.

USNM

Smithsonian Institution, National Museum of Natural History

ANT

Anguilla National Trust

ZMH

Zoologisches Museum Hamburg

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Family

Orbiniidae

Genus

Leitoscoloplos

Loc

Leitoscoloplos abranchiatus ( Hartman, 1967 )

Blake, James A. 2017
2017
Loc

Leitoscoloplos abranchiatus:

Mackie 1987: 720
1987
Loc

Haploscoloplos abranchiatus

Rozbaczylo 1985: 129
Hartman 1978: 156
Hartman 1967: 103
1967
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