Published December 23, 2025
| Version v1
Dataset
Open
TABLE 2 in Morpho-molecular studies suggest a new species from a transboundary river of Turkiye: Gammarus arasensis sp. nov. (Amphipoda: Gammaridae)
Authors/Creators
- 1. Recep Tayyip Erdogan University, Faculty of Fisheries and Aquatic Sciences, 53100 - Rize, Türkiye.
- 2. Ege University, Faculty of Fisheries, 35100 - İzmir, Türkiye.
Description
TABLE 2. Comparative morphological analysis of Gammarus arasensis sp. nov. and G. kischineffensis.
| Character | Gammarus arasensis sp. nov. | G. kischineffensis (in Schellenberg, 1937) | G. kischineffensis (in Karaman & Pinkster, 1977) |
|---|---|---|---|
| Holotype male body length | 12.5 mm | 18 mm | Maximum 17 mm observed |
| Eyes | Kidney-shaped | Small, kidney-shaped | Variable in size from almost round to reniform. |
| Antenna 1 length | Distinctly shorter than half of body length | A little longer than 1/3 of body length | Variable |
| Antenna 1 flagellum | 16–17 articles | Not specified | 22–33 articles |
| Antenna 2 gland cone | Long, straight, almost reaching the distal end of peduncular article 3 | Not described (“weakly and shortly setose”) | Short, half as long as the peduncular article 3 |
| Mandibular palp (article 3) | 1 group of B-setae. C-seta absent. | Not described | 2 groups of B-setae. (C-seta not mentioned, implying absence) |
| Pereopod 3 & 4 seta length (merus & carpus) | Setae longer than the article diameter (P3), as long as the article diameter (P4). | Very short setae; posterior margin of merus with “single groups of short bristles”. | Setae at most as long as article diameter (P3), always shorter than article diameter (P4). |
| Coxal plates 1–4 | Bear one long, simple seta on their inner surfaces. | No mention of long inner setae. | No mention of long inner setae. |
| Epimeral plate 3 | Posterodistal corner slightly pointed. | Posterodistal corner hardly produced, almost rectangular. | Posterodistal corner varies from almost rectangular to moderately pointed. |
| Uropod 3 (endopod/exopod ratio) | ~0.64 (Endopod 0.64x length of exopod) | Similar to G. lacustris (implies well-setose exopod) | Endopod ~0.75x (3/4) length of exopod. Exopod lacks setation on the lower half. |
Notes
Published as part of Baytaşoğlu, Hazel, Özbek, Murat & Aksu, İsmail, 2025, Morpho-molecular studies suggest a new species from a transboundary river of Turkiye: Gammarus arasensis sp. nov. (Amphipoda: Gammaridae), pp. 249 in Zootaxa 5737 (2) on page 249, DOI: 10.11646/zootaxa.5737.2.4, http://zenodo.org/record/19137064
Files
Files
(2.8 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:abcdeaee609c063287e882f554f08d4d
|
2.8 kB | Download |
System files
(8.3 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:c67f4d8dba633f9935b216c920abad99
|
8.3 kB | Download |
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.11646/zootaxa.5737.2.4 (DOI)
- Journal article: urn:lsid:plazi.org:pub:D27EFF87620B0C65FF92FFDEFFA49A57 (LSID)
- Journal article: http://publication.plazi.org/id/D27EFF87620B0C65FF92FFDEFFA49A57 (URL)
- Journal article: http://zenodo.org/record/19137064 (URL)
- Journal article: http://zoobank.org/23BDA309-7435-4F73-8B30-6067E884BD15 (URL)
References
- Schellenberg, A. (1937) Kritische Bemerkungen zur Systematik der Susswassergammariden. Zoologische Jahrbucher. Abteilung fur Systematik, Okologie und Geographie der Tiere, 69, 469-516.
- Karaman, G. S. & Pinkster, S. (1977) Freshwater Gammarus species from Europe, North Africa and adjacent regions of Asia (Crustacea - Amphipoda), Part I Gammarus pulex Group and related species. Bijdragen Tot De Dierkunde, 47 (1), 1-164. https://doi.org/10.1163/26660644-04701001