Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990
Chaetonotus (Hystricochaetonotus) euhystrix Schwank, 1990 (Fig. 12) Localities: Storlien W, Jämtland (N 63 º 19 ’ 06’’; E 12 º 05’ 22 ’’), July 10, 2008; Wet meadow, Abisko Scientific Research Station, Lapland (N 68 º 21 ’ 18 ’’; E 18 º 48 ’ 40 ’’), July 4, 2010. Material: 2 specimens. TL, 182 µm; F...
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ftzenodo:oai:zenodo.org:5632023 2023-05-15T12:59:56+02:00 Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 Kånneby, Tobias 2013-12-31 https://zenodo.org/record/5632023 https://doi.org/10.5281/zenodo.5632023 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/C1146C7C4C2DFF9202CDC21C1F6DFDF3 doi:10.11646/zootaxa.3701.5.3 http://zenodo.org/record/247111 http://publication.plazi.org/id/3D2D14044C3FFF81025AC0381C7BFF93 doi:10.5281/zenodo.247124 http://zoobank.org/472882BF-6499-47D3-A242-A8D218BE2DFD doi:10.5281/zenodo.5632022 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5632023 https://doi.org/10.5281/zenodo.5632023 oai:zenodo.org:5632023 info:eu-repo/semantics/openAccess New species and records of freshwater Chaetonotus (Gastrotricha: Chaetonotidae) from Sweden, pp. 551-588 in Zootaxa 3701(5) 569-570 Biodiversity Taxonomy Animalia Gastrotricha Chaetonotida Chaetonotidae Chaetonotus Chaetonotus euhystrix info:eu-repo/semantics/other publication-taxonomictreatment 2013 ftzenodo https://doi.org/10.5281/zenodo.563202310.11646/zootaxa.3701.5.310.5281/zenodo.24712410.5281/zenodo.5632022 2023-03-10T19:11:17Z Chaetonotus (Hystricochaetonotus) euhystrix Schwank, 1990 (Fig. 12) Localities: Storlien W, Jämtland (N 63 º 19 ’ 06’’; E 12 º 05’ 22 ’’), July 10, 2008; Wet meadow, Abisko Scientific Research Station, Lapland (N 68 º 21 ’ 18 ’’; E 18 º 48 ’ 40 ’’), July 4, 2010. Material: 2 specimens. TL, 182 µm; FL, 29 µm; AL, 17 µm; PhL, 52 µm; MD, 8 µm; CW, ~ 10 µm; TNC, 13; DC, 7; DR, 15–17; VLC, 6; HS, 4– 6 x 3–8 µm; NS, 8 x 10 µm; DS, 12 x 12 µm; HSp, 6–12 µm; NSp, 20 µm; DSp, 45–60 µm; VC, 7– 8; VTS, 9–10 x 4 µm. A large Hystricochaetonotus. Head rounded to weakly five-lobed. Two pairs of sensory ciliary tufts, the posterior pair with very long cilia, up to 30 µm in length. Cephalion relatively small. Hypostomium absent. At least posterior dorsal sensory bristles present, emerging from specialized sub-triangular double-keeled scales. Furca straight with adhesive tubes constituting approximately 3 / 5 of the total furca length. Dorsal surface covered by three-lobed scales with barbed spines. Spines increase drastically in length from anterior to posterior. At least one pair of dorsal spines clearly overshoots the furca and another pair reaches the tip of the furcal branches. Accessory points originate approximately 2 / 3 up the length of the spine. Ventrolateral scales similar in shape to the dorsal scales but smaller in size. Ventrolateral spines finer than the dorsal spines. Interciliary area covered by keeled to smooth rounded scales. A pair of ventral terminal keeled scales, apparently without spines in the posterior end. Mouth terminal. Pharynx widens towards the PhIJ at U 30. Intestine straight with anus at U 81. The Swedish material consisted of one adult specimen in parthenogenetic phase and one juvenile specimen. The Swedish specimen disagrees with the original description by Schwank (1990) in that they have two rounded double-keeled scales on the base of each furcal branch. These scales are in turn surrounded by three pairs of elongated three-lobed scales much like in C. (H.) hystrix. Moreover, in the posterior ... Other/Unknown Material Abisko Lapland Zenodo Abisko ENVELOPE(18.829,18.829,68.349,68.349) Storlien ENVELOPE(13.804,13.804,65.674,65.674) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Gastrotricha Chaetonotida Chaetonotidae Chaetonotus Chaetonotus euhystrix |
spellingShingle |
Biodiversity Taxonomy Animalia Gastrotricha Chaetonotida Chaetonotidae Chaetonotus Chaetonotus euhystrix Kånneby, Tobias Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
topic_facet |
Biodiversity Taxonomy Animalia Gastrotricha Chaetonotida Chaetonotidae Chaetonotus Chaetonotus euhystrix |
description |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank, 1990 (Fig. 12) Localities: Storlien W, Jämtland (N 63 º 19 ’ 06’’; E 12 º 05’ 22 ’’), July 10, 2008; Wet meadow, Abisko Scientific Research Station, Lapland (N 68 º 21 ’ 18 ’’; E 18 º 48 ’ 40 ’’), July 4, 2010. Material: 2 specimens. TL, 182 µm; FL, 29 µm; AL, 17 µm; PhL, 52 µm; MD, 8 µm; CW, ~ 10 µm; TNC, 13; DC, 7; DR, 15–17; VLC, 6; HS, 4– 6 x 3–8 µm; NS, 8 x 10 µm; DS, 12 x 12 µm; HSp, 6–12 µm; NSp, 20 µm; DSp, 45–60 µm; VC, 7– 8; VTS, 9–10 x 4 µm. A large Hystricochaetonotus. Head rounded to weakly five-lobed. Two pairs of sensory ciliary tufts, the posterior pair with very long cilia, up to 30 µm in length. Cephalion relatively small. Hypostomium absent. At least posterior dorsal sensory bristles present, emerging from specialized sub-triangular double-keeled scales. Furca straight with adhesive tubes constituting approximately 3 / 5 of the total furca length. Dorsal surface covered by three-lobed scales with barbed spines. Spines increase drastically in length from anterior to posterior. At least one pair of dorsal spines clearly overshoots the furca and another pair reaches the tip of the furcal branches. Accessory points originate approximately 2 / 3 up the length of the spine. Ventrolateral scales similar in shape to the dorsal scales but smaller in size. Ventrolateral spines finer than the dorsal spines. Interciliary area covered by keeled to smooth rounded scales. A pair of ventral terminal keeled scales, apparently without spines in the posterior end. Mouth terminal. Pharynx widens towards the PhIJ at U 30. Intestine straight with anus at U 81. The Swedish material consisted of one adult specimen in parthenogenetic phase and one juvenile specimen. The Swedish specimen disagrees with the original description by Schwank (1990) in that they have two rounded double-keeled scales on the base of each furcal branch. These scales are in turn surrounded by three pairs of elongated three-lobed scales much like in C. (H.) hystrix. Moreover, in the posterior ... |
format |
Other/Unknown Material |
author |
Kånneby, Tobias |
author_facet |
Kånneby, Tobias |
author_sort |
Kånneby, Tobias |
title |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
title_short |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
title_full |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
title_fullStr |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
title_full_unstemmed |
Chaetonotus (Hystricochaetonotus) euhystrix Schwank 1990 |
title_sort |
chaetonotus (hystricochaetonotus) euhystrix schwank 1990 |
publishDate |
2013 |
url |
https://zenodo.org/record/5632023 https://doi.org/10.5281/zenodo.5632023 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) ENVELOPE(13.804,13.804,65.674,65.674) |
geographic |
Abisko Storlien |
geographic_facet |
Abisko Storlien |
genre |
Abisko Lapland |
genre_facet |
Abisko Lapland |
op_source |
New species and records of freshwater Chaetonotus (Gastrotricha: Chaetonotidae) from Sweden, pp. 551-588 in Zootaxa 3701(5) 569-570 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/C1146C7C4C2DFF9202CDC21C1F6DFDF3 doi:10.11646/zootaxa.3701.5.3 http://zenodo.org/record/247111 http://publication.plazi.org/id/3D2D14044C3FFF81025AC0381C7BFF93 doi:10.5281/zenodo.247124 http://zoobank.org/472882BF-6499-47D3-A242-A8D218BE2DFD doi:10.5281/zenodo.5632022 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5632023 https://doi.org/10.5281/zenodo.5632023 oai:zenodo.org:5632023 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.563202310.11646/zootaxa.3701.5.310.5281/zenodo.24712410.5281/zenodo.5632022 |
_version_ |
1766140476215263232 |