taxonID	type	description	language	source
4EAC680D208B56DA8ED5AA1DC8F71899.taxon	description	Figs 2, 3, 4	en	Pinsivy, Lucas, Lavesque, Nicolas, Daffe, Guillemine, Daramy, Flore, Hutchings, Pat (2025): Paucibranchia glemareci sp. nov. (Annelida, Eunicidae), a new species from the French Atlantic continental shelf. ZooKeys 1232: 187-203, DOI: 10.3897/zookeys.1232.143944
4EAC680D208B56DA8ED5AA1DC8F71899.taxon	diagnosis	Diagnosis. Prostomium anteriorly rounded with ventral sulcus. Five prostomial appendages arranged in an arc on posterior margin of prostomium. Eyes present, round and dark. Maxillary formula: 1 + 1, 8 + 9 (8), 9 + 0, 5 (6) + 10, 1 + 1. Branchiae pectinate, present from chaetiger 14 – 16 to 31 – 33 with 8 – 13 long filaments. Dorsal cirri always well developed, slightly longer but thinner in postbranchial chaetigers. Ventral cirri shorter than dorsal cirri, bluntly triangular in pre-branchial region, becoming bluntly conical and thinner through the body. Postchaetal lobes well developed in anterior part of body, becoming inconspicuous from about chaetiger 45 onwards. Three or four light brown aciculae in prebranchial chaetigers, decreasing to two in anterior part of branchial region and to one thereafter. Subacicular hooks light brown, bidentate, commencing from chaetiger 33 – 37 and present in all following chaetigers; most often one per chaetiger but sometimes two in posterior part of body. Compound chaetae all bidentate falcigers, with two sizes of blades, short ones about 50 µm, long ones about 90 µm. One type of pectinate chaetae identified: narrow, isodont with 2 – 5 long and slender internal teeth. Posterior pectinate chaetae, if different, unknown. Pygidium unknown.	en	Pinsivy, Lucas, Lavesque, Nicolas, Daffe, Guillemine, Daramy, Flore, Hutchings, Pat (2025): Paucibranchia glemareci sp. nov. (Annelida, Eunicidae), a new species from the French Atlantic continental shelf. ZooKeys 1232: 187-203, DOI: 10.3897/zookeys.1232.143944
4EAC680D208B56DA8ED5AA1DC8F71899.taxon	description	Description (based on holotype, with variation in parentheses for paratypes). Specimens fixed in alcohol whitish, specimens fixed in formalin pinkish with reddish spots on prostomium, ventrum, parapodia, dorsal cirri, and lateral parts of dorsum (Fig. 2 B, C). All specimens incomplete, holotype with 60 chaetigers (longest paratype with about 90 chaetigers), about 26 mm (13.3 – 47.5 mm) long, 1.9 mm (1.0 – 2.5 mm) wide at chaetiger 10, including parapodia. Body round in cross section anteriorly (about chaetiger 7 – 8), dorsoventrally flattened thereafter. Prostomium anteriorly rounded (slightly conical), without dorsal median sulcus, ventral sulcus deep (Figs 2 A – D, 4 A, B). Palps and antennae arranged in an arc on posterior margin of prostomium. Median antenna isolated by gap from lateral antennae and palps. Median antenna longer than lateral ones, lateral antennae longer than palps, antennae much longer and palps slightly longer (same size) than prostomium (Figs 2 B, 4 A). Median antenna reaching chaetiger 3 (2), lateral antennae end of chaetiger 1 (end of second peristomial ring) and palps second peristomial ring (end of first peristomial ring) (Figs 2 B, 4 A). Ceratostyles and palpostyles slender and tapering, with indistinct cylindrical articulations. Ceratophores and palpophores indistinct. Eyes present, one pair, rounded, black, situated at posterior base of palps and lateral to lateral antennae (Fig. 2 B). Separation between both peristomial rings distinct on all sides. First peristomial ring as long as second one dorsally (1 ½ × as long as second one), twice as long laterally (Figs 2 B, 4 A). Anterior dorsal margin of first peristomial ring forming convoluting collar on holotype and most paratypes (Fig. 2 B). Some small specimens (non-type), less than 1 mm wide, lacking palps. Maxillary formula as follows: MF = 1 + 1, 8 + 9 (8), 9 + 0, 5 (6) + 10, 1 + 1, MVI absent (Fig. 3 E). Maxillary carrier approximately 2 × shorter than MI, rectangular anteriorly, triangular posteriorly, with a pair of rounded wings situated at posterolateral margins. MI forceps-like, without attachment lamellae, with falcal arch developed, rounded; with outer edge of base straight and with curvature in basal inner edge where base of maxillae II is supported. Closing system approximately 5 × shorter than MI. MII without attachment lamella but with small basal ligament, teeth triangular, distributed on half of plate length. MIII, single, longer than left MIV, slightly curved, with equal-sized triangular teeth, without attachment lamella but with small basal ligament. Left MIV short (less than half length of right MIV), attachment lamella dark, 2 × shorter than corresponding MIV, subtriangular. Right MIV long, with teeth triangular, decreasing in size posteriorly; attachment lamella oval, 3 × shorter than corresponding MIV, dark. MV, paired, longer than high, whitish (Fig. 3 E). Mandibles light brown, with concentric stripes; longer than MI; cutting plates whitish (Fig. 3 F). First three parapodia smallest; most developed from chaetiger 4 to end of branchial chaetigers, following ones becoming gradually smaller (Fig. 3 A – D). Prechaetal lobes as transverse fold in all chaetigers. Postchaetal lobes well developed until end of branchial chaetigers, bluntly triangular in first 9 – 10 chaetigers, becoming conical, longer and thinner through branchial region, then decreasing in size, becoming inconspicuous from about chaetiger 45. Dorsal cirri conical, tapering, becoming slender and longer from first chaetiger to end of branchial region, then filiform until end of body. Dorsal cirri slightly longer in post-branchial region than in pre-branchial chaetigers. Ventral cirri shorter than dorsal cirri, bluntly triangular in pre-branchial region, becoming bluntly conical and thinner throughout body (Fig. 3 A – D). Branchiae pectinate, commencing from chaetiger 16 (14 – 15) continuing for a limited number of segments, until chaetiger 32 (31 – 33); with 8 – 13 long filaments; branchial filament about 1.5 × longer than dorsal cirri where best developed (Figs 2 C, 3 B). Smaller specimens (non-type) have branchiae starting earlier and less numerous (from chaetiger 11 to 20 for a specimen 0.8 mm wide). Aciculae light brown with paler blunt tips, three or four aciculae on pre-branchial chaetigers, two on anterior part of branchial region, and one from mid part of branchial region and following chaetigers; some posterior chaetigers with two aciculae. Supra-acicular chaetae with limbate capillaries and pectinates; capillaries present from first chaetiger to posterior ones, numbering up to 15 in anterior chaetigers and up to five in posteriormost chaetigers (Fig. 4 C, D). One type of pectinate chaetae identified: narrow, isodont with 2 – 5 long and slender internal teeth; inner teeth with terminal filaments; outer teeth longer, but of different length (Fig. 4 E, F), anterior body with two or three pectinate chaetae by parapodium, mid-body chaetigers with one chaeta, not seen posteriorly (but longest paratype with most of posterior chaetae broken). Subacicular chaetae including compound falcigers and subacicular hooks, compound spinigers absent (Fig. 4 C, D). Compound falcigers bidentate, with two sizes of blades, short ones about 50 µm, long ones about 90 µm, commencing from first chaetiger to posterior part, with more than 30 chaetae within parapodium in anterior part, with about seven chaetae in mid-body and four or five on last chaetigers (Fig. 4 C, D). Subacicular hooks (SAH) light brown, bidentate, commencing from chaetiger 35 (33 – 37) and present in all chaetigers thereafter, ventral to bundle of falcigers, generally one per parapodium; few posterior chaetigers with two hooks (Fig. 4 D). Smaller specimens (non-type) have SAH starting earlier (at 19 th chaetiger for a specimen of 0.6 mm wide and at 29 th for a specimen 0.8 mm wide). Pygidium unknown.	en	Pinsivy, Lucas, Lavesque, Nicolas, Daffe, Guillemine, Daramy, Flore, Hutchings, Pat (2025): Paucibranchia glemareci sp. nov. (Annelida, Eunicidae), a new species from the French Atlantic continental shelf. ZooKeys 1232: 187-203, DOI: 10.3897/zookeys.1232.143944
4EAC680D208B56DA8ED5AA1DC8F71899.taxon	etymology	Etymology. This species is named after Michel Glemarec for his major contribution to the ecology of the Grande Vasière and the taxonomy of polychaetes.	en	Pinsivy, Lucas, Lavesque, Nicolas, Daffe, Guillemine, Daramy, Flore, Hutchings, Pat (2025): Paucibranchia glemareci sp. nov. (Annelida, Eunicidae), a new species from the French Atlantic continental shelf. ZooKeys 1232: 187-203, DOI: 10.3897/zookeys.1232.143944
4EAC680D208B56DA8ED5AA1DC8F71899.taxon	distribution	Distribution. Known from the “ Grande Vasière ” area.	en	Pinsivy, Lucas, Lavesque, Nicolas, Daffe, Guillemine, Daramy, Flore, Hutchings, Pat (2025): Paucibranchia glemareci sp. nov. (Annelida, Eunicidae), a new species from the French Atlantic continental shelf. ZooKeys 1232: 187-203, DOI: 10.3897/zookeys.1232.143944
