taxonID	type	description	language	source
9B64AAFEBD5356978C2AD3FE095FFB90.taxon	description	Figs 2, 3	en	Kremenetskaia, Antonina, Alvestad, Tom, Penney, Heather D., Hamel, Jean-François, de Moura Neves, Bárbara, Côté, David, Mercier, Annie (2024): A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyone labradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae). ZooKeys 1206: 191-206, DOI: 10.3897/zookeys.1206.123364
9B64AAFEBD5356978C2AD3FE095FFB90.taxon	diagnosis	Diagnosis. Body curved, cylindrical, tapered at anterior and posterior ends. Body colour in vivo pinkish. Tentacles 10, two ventral tentacles smaller. Tube feet arranged in several rows along radii, also present in interradii and on tapered posterior part of body. Body-wall ossicles slightly concave plates of irregular shape with smooth margins and perforations. Ossicles of tube feet rod-shaped; terminal plate irregular in shape; rods not numerous, smooth, with enlarged tuberculous ends. Tentacle ossicles rods with enlarged perforated ends. Segments of calcareous ring with undivided posterior projections.	en	Kremenetskaia, Antonina, Alvestad, Tom, Penney, Heather D., Hamel, Jean-François, de Moura Neves, Bárbara, Côté, David, Mercier, Annie (2024): A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyone labradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae). ZooKeys 1206: 191-206, DOI: 10.3897/zookeys.1206.123364
9B64AAFEBD5356978C2AD3FE095FFB90.taxon	description	Description. Body curved towards dorsal side, wider and cylindrical in the middle, anterior end tapered towards terminal mouth, posterior end tapered to a ‘ tail’ towards terminal anus, ‘ tail’ short, more prominent in paratype and short in holotype (Fig. 2 A – D). Body colour pinkish in living specimens (Fig. 2 A, B), tentacles, tube feet and ‘ tail’ more brightly coloured; colour in ethanol uniformly greyish, tentacles and tube feet whitish or greyish (Fig. 2 C, D). Body length 9.5 mm in holotype, 14 mm in paratype. Body-wall skin thin, rough, non-transparent, with dense layer of scale-like ossicles (Fig. 2 G). Tentacles (examined in holotype, in paratype they were partly retracted) ten, two ventral tentacles remarkably smaller in size. Tube feet small (Fig. 2 F), non-transparent in ethanol, arranged in several rows along radii and also scattered in interradii; tube feet more numerous on mid body, along ventrolateral and mid-ventral radii; on ‘ tail’ tube feet smaller and less numerous, arranged in double rows (Fig. 2 E). Anal papillae five (Fig. 2 E). Pieces of calcareous ring up to 1.6 mm in length, united at most their length, radial segments with undivided posterior projections, with forked grooved anterior projections; interradial segments with grooved anterior projections (Fig. 2 H, I). Retractor muscles undivided, not flat, broader anteriorly (Fig. 2 I). Polian vesicle single, non-divided (Fig. 2 I). Gonad in a tuft (Fig. 2 I), gonad tubules in paratype with oocytes of different size. Body-wall ossicles in a single dense overlapping layer, laying their concave side out; body-wall ossicles small perforated plates, usually do not exceed 200 µm in length, slightly concave, mostly irregular in shape, smooth; perforations with smooth margins, from rounded to oblong in shape, their size and shape can vary even on a same plate (Fig. 3 A, D). Introvert with bigger flat plates, plates often narrow and elongated (Fig. 3 B). On tube feet supporting rod-shaped ossicles, not numerous, curved in shape, with slightly enlarged perforated ends, length 100 – 130 µm; terminal plate delicate, irregular in shape, ~ 70 µm in diameter (Fig. 3 E). Tentacle ossicles curved rods, most ossicles ranged 100 – 480 µm in length, bigger in proximal part of tentacles; smaller rods sometimes enlarged in the middle; bigger rods often with enlarged spatulated and / or bifurcated ends (Fig. 3 C).	en	Kremenetskaia, Antonina, Alvestad, Tom, Penney, Heather D., Hamel, Jean-François, de Moura Neves, Bárbara, Côté, David, Mercier, Annie (2024): A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyone labradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae). ZooKeys 1206: 191-206, DOI: 10.3897/zookeys.1206.123364
9B64AAFEBD5356978C2AD3FE095FFB90.taxon	distribution	Distribution. Canada, Labrador Sea, depth 740 – 969 m.	en	Kremenetskaia, Antonina, Alvestad, Tom, Penney, Heather D., Hamel, Jean-François, de Moura Neves, Bárbara, Côté, David, Mercier, Annie (2024): A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyone labradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae). ZooKeys 1206: 191-206, DOI: 10.3897/zookeys.1206.123364
9B64AAFEBD5356978C2AD3FE095FFB90.taxon	etymology	Etymology. The species is named after its type locality.	en	Kremenetskaia, Antonina, Alvestad, Tom, Penney, Heather D., Hamel, Jean-François, de Moura Neves, Bárbara, Côté, David, Mercier, Annie (2024): A new species of holothuroid from the Labrador Sea (eastern Canada): Pseudothyone labradorensis sp. nov. (Echinodermata, Holothuroidea, Dendrochirotida, Sclerodactylidae). ZooKeys 1206: 191-206, DOI: 10.3897/zookeys.1206.123364
