DOI: 10.5281/zenodo.15138256
title: Table 2 in New Species of Scalibregmatidae (Annelida) from Slope and Abyssal Depths off Eastern Australia

description: Table 2. Morphological comparison of 17 known species of Oligobregma. Abbreviations: Ant, anterior; Atl, Atlantic; CCZ, Clarion-Clipperton Zone; intPap, interramal papilla; N, north; NeuroC, neuropodial cirri; NotoP, notopodia; NotoC, notopodial cirri; NeuroP, neuropodia; NW, northwest; Pap, papilla; Post, posterior, S, south; SE, southeastern; Set, setiger; W, western.
speciesanterior setigers with acicular spinesprostomiumfirst furcatesegmental annulation patternsposterior parapodiapygidiumdistribution & referencessetaespecies with acicular spines on setigers 1–2O. aciculata (Hartman, 1965)Both rami; spines hirsute2 short rounded frontal?Set 3Not reportedNotoC short, rounded; NeuroC,UnknownW North Atl, abyssal, 4850 m;lobestriangular, pointed; withHartman, 1965interramal PapO. oculata Kudenov & Blake,Both ramiT-shaped, with digitiformSet 3Set 1 smooth; Set 2NotoC narrow, as long as wide;“At least” 2S of New Caledonia, 57 m;1978lateral lobesbiannulate; Set 3NeuroC digitate, 3 times as longanal cirriKudenov & Blake, 1978triannulate; rest withas wide; large intPap4 or 5 annulationsO. pseudocollare Schüller &NotoP onlyWith 2 laterally directedSet 3Set 1–3 smooth; Set 4–9 tri-Short conical dorsal and ventralNo cirriSouthern Ocean; Scotia andHilbig, 2007rounded lobesto quadriannulate,cirriobservedWeddell Seas, 753–3050 m;thereafter with 5Schüller & Hilbig, 2007annulationsspecies with acicular spines on setigers 1–3O. aristata sp. nov.Both rami; spines with2 short forwardly directedSet 5–6Set 1 a single large medialNotoC large, inflated, withUnknownOff Australia lowerterminal aristalobes; these notched inpad; set 2 uniannulate; setnipple-like tip directed dorally;continental slope andholotype3–4 triannulate; set 5–10NeuroC asymmetrical, nipple-abyssal depths, 2793–4031inflated, obscured; setlike tip directed laterallym; This study11–22 tri- to quadriannulateO. collare (Levenstein, 1975)NotoP only; spines hirsute2 short forwardly directedSet 4Set 1–2 smooth; set 3 toNotoC short, bluntly triangular;Up to 8 cirriSouthern Ocean, Antarctica,rounded lobesmid- body triannulate; postNeuroC short, conical; with1622–6070 m; Levenstein,set quadriannulateinterramal Pap1975; Blake, 1981O. mucronata Blake, 2015Both rami; spines w/2 short, forwardly directedSet 4Set 1–2 uniannulate; set 3,NotoC large, triangular, NeuroC4 anal cirriEast Antarctic Peninsula,terminal aristarounded lobesbiannulate; set 4 andlarge, triangular, with broad323–912 m; Blake, 2015following quadriannulatebase; with interramal PapO. notiale Blake, 1981NotoP only2 enlarged, diverging lateralSet 4Set 1 smooth to irregular;NotoC large inflated lobe;5 ventral cirriSouthern Ocean, Antarctica,lobesrest quadriannulateNeuroC small, conical lobe;18–923 m; Blake, 1981with large interramal PapO. profunda sp. nov.Both rami of first row; rarely2 short rounded lobes,Set 5–6Set 1–3 smooth; set 4–endNotoC and NeuroC erect;4 anal cirriOff eastern Australia,in second row of set 1;subapicaltri- to quadriannulatetriangular with pointed tipsTasmania to New SouthNeuroP of set 1‒2, rarely 3;Wales, 3881‒4176 m. Thisfirst row only.study.
description: Published as part of Blake, James A., 2023, New Species of Scalibregmatidae (Annelida) from Slope and Abyssal Depths off Eastern Australia, pp. 280 in Records of the Australian Museum (Rec. Aust. Mus.) 75 (3) on page 280, DOI: 10.3853/j.2201-4349.75.2023.1827, http://zenodo.org/record/10414024