Published June 6, 2023
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TABLE 2 in The remarkable Ponto-Caspian amphipod diversity of the lower Durso River (SW Caucasus) with the description of Litorogammarus dursi gen. et sp. nov.
Authors/Creators
- 1. A. N. Severtsov Institute of Ecology and Evolution of RAS, 119071, Moscow, Russia & coralliodecapoda @ mail. ru; vanomarin @ yahoo. com; https: // orcid. org / 0000 - 0003 - 0552 - 8456
- 2. A. N. Severtsov Institute of Ecology and Evolution of RAS, 119071, Moscow, Russia & triops @ yandex. ru; https: // orcid. org / 0000 - 0002 - 8826 - 9316
- 3. Laboratory of Evolutionary Ecology of Hydrobionts, Nature Research Centre, Vilnius, Lithuania & denis. copilas-ciocianu @ gamtc. lt; https: // orcid. org / 0000 - 0002 - 6374 - 2365
Description
TABLE 2. Morphological comparison between Litorogammarus gen. nov. and related genera. The terms “short” and “long” are defined as shorter or longer than the underlying segment, respectively.
| Character | Litorogammarus gen. nov. | Chaetogammarus | Spirogammarus | Dinarogammarus | Echinogammarus | Pectenogammarus (= Homoeogammarus) | Iberogammarus | Marinogammarus | Parhomoeogammarus | Relictogammarus |
|---|---|---|---|---|---|---|---|---|---|---|
| AI setation | Sparse, short/ long | Sparse, short | Sparse, short | Sparse, short | Sparse, short | Sparse, short/long | Sparse, short | Sparse/dense, short/long | Sparse, short | Sparse, short |
| AI acc. flag. articles | 4–8 | 2–8 | Up to 9 | Up to 6 | 5–6 | 4 | 4 | 5–9 | 5 | 4 |
| AII setation | Dense, long, curled | Dense, long, straight/curled/ coiled | Dense, long, coiled | Dense/sparse, long straight | Sparse/ dense, short/ moderately long, straight | Dense/sparse, long, straight | Dense, long, straight/curled | Dense, short/ long, straight | Sparse/dense, short | Sparse, short, straight |
| Calceoli | Absent | Absent | Absent | Absent | Absent | Absent/present | Absent? | Absent/ present | Absent/present | Absent |
| Head lobes | Straight, rounded | Acute/straight | Straight | Straight | Straight, rounded | Rounded, straight, acute | Straight | Rounded/ straight | Straight/rounded | Rounded |
| GI vs. GII propodus | Shorter | Shorter | Subequal | Shorter | Shorter | Shorter | Longer | Longer | Shorter/subequal | Longer |
| PIII setation | Sparse, short | Dense/sparse/ short/long, straight/curly/ coiled | Dense, long, coiled | Dense, moderately long, straight | Dense, long, straight/curled | Dense/sparse short/ long, straight/curled | Moderately dense, long, straight | Absent/ sparse/dense, short/long, straight | Dense, long, straight | Absent/weak |
| PV–VII setation | Sparse | Sparse | Sparse | Well-developed | Well-developed | Sparse /well- developed | Sparse to moderate | Absent/ Sparse | Moderately developed | Absent/ Sparse |
| Pleosomites | Bare/small setules | Bare/small setules | Bare/small setules | Bare/small setules | Well-developed setation/small setules/spines | Bare/small setules | Bare/small setules | Bare | Bare/small setules/ toothed | Bare/small setules |
| Urosomites | Dominated by spines | Dominated by spines | Dominated by spines | Dominated by spines | Dominated by long setae | Spines and setae/ dominated by spines | Spines and setae | Dominated by spines | Spines and setae | Dominated by spines |
| Epimeres II–III dist. edge | With spines | With spines | With spines | With spines | With long setae | With setae | With spines | With spines | With spines | With spines |
| UIII exopod setation | Moderately developed | Absent/well developed | Well-developed | Moderately developed | Well-developed | Moderately to well- developed | Absent to moderate | Weak to well- developed | Well-developed | Absent/weak |
| UIII endopod setation | Absent | Absent | Absent/well developed | Moderate | Moderately to well-developed | Moderately to well- developed | Moderate | Moderate to well- developed | Moderate | Absent |
| Telson | Longer than broad, lobes gradually tapering | As long as broad, lobes abruptly tapering/longer than broad, lobes gradually tapering | As long as broad, lobes abruptly tapering | Longer than broad, lobes gradually tapering | As long as broad, lobes abruptly tapering | As long as broad, lobes abruptly tapering/longer than broad, lobes gradually tapering | Longer than broad, lobes gradually tapering | Longer than broad, lobes gradually tapering | Slightly longer/as long as broad, lobes abruptly tapering | Longer than broad, lobes gradually tapering |
...Continued on the next page
TABLE 2.
Notes
Published as part of Marin, Ivan, Palatov, Dmitry & Copilaș-Ciocianu, Denis, 2023, The remarkable Ponto-Caspian amphipod diversity of the lower Durso River (SW Caucasus) with the description of Litorogammarus dursi gen. et sp. nov., pp. 489-490 in Zootaxa 5297 (4) on page 489, DOI: 10.11646/zootaxa.5297.4.2, http://zenodo.org/record/8009123
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