Published December 31, 2020
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Table 2 in Biodiversity data and new species descriptions of polychaetes from offshore waters of the Falkland Islands, an area undergoing hydrocarbon exploration
Authors/Creators
- 1. Natural History Museum, London, UK
- 2. Greenland Institute of Natural Resources, Nuuk, Greenland
Description
Table 2. Comparison of Leitoscoloplos olei sp. nov. with species known from the region based on literature (Mackie 1987, Blake 2017). An asterisk indicates that only the diagnosis given by Mackie (1987) is considered valid here.
| Species | Prostomium | Thorax (no. of chaetigers) | Branchiae (from chaetiger) | Thoracic neuropodial postchaetal lobes (form) | Abdominal notopodial postchaetal lobes (form) | Subpodial flange |
|---|---|---|---|---|---|---|
| L. kerguelensis * | conical, anteriorly slightly rounded | 9-10 | 13-14 (15) | triangular | slender, digitate | rudimentary |
| L. abranchiatus | conical, narrowly rounded | 9-13 | absent | short, conical | short, digitate | absent? (not reported) |
| L. mawsoni | conical, anteriorly rounded | 10 | 11-12, symmetrical | robust, triangular, digitate | robust, triangular to digitate | initially rudimentary, enlarged blister-like in posterior chaetigers |
| L. geminus | conical, anteriorly rounded | 10 | 11-12, distinctly asymmetrical in posterior chaetigers | approaching oval shape | wide basally, tapering to elongate narrow tip | Initially rudi-mentary, sepa-rated from neuropodium by a distinct notch; enlarged blister-like flanges in posterior chaetigers |
| L. banzareae * | conical, anteriorly slightly rounded | 10 | 14-15 | slender, triangular, digitate* | slender, digitate- lanceolate | narrow |
| L. chilensis | conical, anteriorly sharp | 13-16 | 13-16 | mammiform- triangular | foliaceous | well- developed |
| L. drakei | conical, narrowing anteriorly | 8-9 | 18-20 | short, stubby, indistinct | elongated and cirriform to narrower and digitiform | absent? (not reported) |
| L. eltaninae | conical, anteriorly sharp | 10 | 20 | tapering digitiform | becoming bilobed | absent? (not reported) |
| L. nasus | elongate, more than twice as long as wide; anteriorly narrowly rounded | 9-10 | 13-14 | triangular | elongate, becoming narrow more posteriorly | present |
| L. phyllobran-chus | reduced, wider than long, weakly pointed anteriorly | 8 | 17 | elliptical | thin, cirriform | neuropodia of middle and posterior segments dorsoventrally swollen, forming weakly developed ventral flange |
| L. plataensis | short, conical, pointed, and narrow | 9-10 | 13-16, asymmetrical, with lateral lobe | mammiform | thin, narrow, digitate | small but distinct, continuous with neuropodial lobe |
| L. rankini | conical, anteriorly pointed | 9-11 | from anterior abdominal segments | arising from low postchaetal ridge | narrow, digitiform | reported as absent |
| L. olei sp. nov. | conical, anteriorly pointed | 9 | 17-18, asymmetrical, with ventral lobe | conical to approaching mammiform in posterior thorax | slender, digitate | distinct, continuous with neuropodial lobe |
Notes
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Additional details
Identifiers
References
- Mackie, AS, 1987. A review of species currently assigned to the genus Leitoscoloplos Day. Sarsia 72 (1): 1 - 28, DOI: https://doi.org/10.1080/00364827.1987.10419701
- Blake, JA, 2017. Polychaeta Orbiniidae from Antarctica, the Southern Ocean, the Abyssal Pacific Ocean, and off South America. Zootaxa 4218 (1): 1 - 145, DOI: https://doi.org/10.11646/zootaxa.4218.1.1