Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica
Here we present Austropallene halanychi sp. nov., a new species of pycnogonid within the family Callipallenidae (Pycnogonida), collected from the Ross Sea, Antarctica. While retaining key morphological features known for the genus Austropallene Hodgson, 1915a, the new species is distinguished from c...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2023-11-01
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| Series: | ZooKeys |
| Online Access: | https://zookeys.pensoft.net/article/108286/download/pdf/ |
| _version_ | 1827629948741877760 |
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| author | Jessica R. Zehnpfennig Andrew R. Mahon |
| author_facet | Jessica R. Zehnpfennig Andrew R. Mahon |
| author_sort | Jessica R. Zehnpfennig |
| collection | DOAJ |
| description | Here we present Austropallene halanychi sp. nov., a new species of pycnogonid within the family Callipallenidae (Pycnogonida), collected from the Ross Sea, Antarctica. While retaining key morphological features known for the genus Austropallene Hodgson, 1915a, the new species is distinguished from congeners by its much larger size, along with the combined absence of a denticle on the inner surface of the fixed finger of the chelifore claw along with the presence of small conical outgrowths where the fixed finger of the chelifore claw meets the movable finger on both the dorsal and ventral sides, and also the ability to fully close the chelifore claw. Additionally, the complete mitochondrial genome of A. halanychi is consistent with other members of the genus Austropallene in terms of gene order and directionality. A phylogenetic tree consisting of mitochondrial protein-coding gene data places A. halanychi as sister to Austropallene cornigera (Möbius, 1902). Additionally, a phylogenetic tree constructed using partial COI data from other callipallenids placed the new species in a clade containing the genus Austropallene. The combination of molecular data in addition to key morphological differences from similar species in the genus leaves no doubt that the new taxon is a new Antarctic species of Austropallene. |
| first_indexed | 2024-03-09T13:59:31Z |
| format | Article |
| id | doaj.art-f505afa4cec34228876a868f7407d353 |
| institution | Directory Open Access Journal |
| issn | 1313-2970 |
| language | English |
| last_indexed | 2024-03-09T13:59:31Z |
| publishDate | 2023-11-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | ZooKeys |
| spelling | doaj.art-f505afa4cec34228876a868f7407d3532023-11-30T11:00:08ZengPensoft PublishersZooKeys1313-29702023-11-01118516318010.3897/zookeys.1185.108286108286Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, AntarcticaJessica R. Zehnpfennig0Andrew R. Mahon1Central Michigan UniversityCentral Michigan UniversityHere we present Austropallene halanychi sp. nov., a new species of pycnogonid within the family Callipallenidae (Pycnogonida), collected from the Ross Sea, Antarctica. While retaining key morphological features known for the genus Austropallene Hodgson, 1915a, the new species is distinguished from congeners by its much larger size, along with the combined absence of a denticle on the inner surface of the fixed finger of the chelifore claw along with the presence of small conical outgrowths where the fixed finger of the chelifore claw meets the movable finger on both the dorsal and ventral sides, and also the ability to fully close the chelifore claw. Additionally, the complete mitochondrial genome of A. halanychi is consistent with other members of the genus Austropallene in terms of gene order and directionality. A phylogenetic tree consisting of mitochondrial protein-coding gene data places A. halanychi as sister to Austropallene cornigera (Möbius, 1902). Additionally, a phylogenetic tree constructed using partial COI data from other callipallenids placed the new species in a clade containing the genus Austropallene. The combination of molecular data in addition to key morphological differences from similar species in the genus leaves no doubt that the new taxon is a new Antarctic species of Austropallene.https://zookeys.pensoft.net/article/108286/download/pdf/ |
| spellingShingle | Jessica R. Zehnpfennig Andrew R. Mahon Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica ZooKeys |
| title | Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica |
| title_full | Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica |
| title_fullStr | Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica |
| title_full_unstemmed | Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica |
| title_short | Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica |
| title_sort | austropallene halanychi sp nov a new species of sea spider pycnogonida callipallenidae from the ross sea antarctica |
| url | https://zookeys.pensoft.net/article/108286/download/pdf/ |
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