New Insights in the Helicellini Ihering, 1909 with Description of Kherattolactea Gen. Nov. and the First Record of Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 from Algeria
Abstract
1. Introduction
2. Material and Methods
2.1. Molecular Analyses
2.2. DNA Extraction, PCR Amplification, and Sequencing
2.3. Sequences Alignment and Diversity
2.4. Phylogenetic Analyses
2.5. Description of New Taxa
2.6. Morphological Investigation
3. Results
3.1. Phylogenetic Analysis
3.2. Molecular Description of New Taxa
- Kherattolactea nov. gen. Ezzine, Bouaziz, De Mattia & Neubert
- Type species: Xerophila keratae Kobelt, 1892 [16].
- Xerogyra halgassi nov. sp. De Mattia, Ezzine & Neubert.
- Orexana lemoinei (Kobelt, 1882) [43] nov. comb.
3.3. Systematic Implications
- Kherattolactea gen. nov. Ezzine, Bouaziz, De Mattia & Neubert
- Kherattolactea keratae Kobelt, 1892 [16]
- Xerogyra Monterosato, 1892
- Xerogyra fiorii Alzona & Alzona Bisacchi, 1938 [42]
- Xerogyra grovesiana Paulucci, 1881 [41]
- Xerogyra spadae Calcara, 1845 [40]
- Xerogyra halgassi De Mattia, Ezzine & Neubert n. sp.
- Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 [14]
- Orexana lemoinei Kobelt, 1882 [43]
4. Discussion
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations of Museum’s Acronyms
MHNG-BGT | Museum d’Histoire Naturelle de Genève, coll. Bourguignat |
NMBE | Naturhistorisches Museum der Burgergemeinde Bern |
SMF | Research Institute Senckenberg, Frankfurt am Main, Germany |
RMNH-MOL | Naturalis, Leiden |
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Marker | Primer Name | Primer Sequence |
---|---|---|
COI [17] | LCO1490 | 5′-GGTCAACAAATCATAAAGATATTGG-3′ |
HCO2198 | 5′-TAAACTTCAGGGTGACCAAAAAATCA-3′ | |
16S [18] | 16S F | 5′-CGGCCGCCTGTTTATCAAAAACAT-3′ |
16S R | 5′-GGAGCTCCGGTTTGAACTCAGATC-3′ | |
ITS2 [19] | LSU1 | 5′-CTAGCTGCGAGAATTAATGTGA-3′ |
LSU3 | 5′-ACTTTCCCTCACGGTACTTG-3′ | |
28S [19] | LSU-2 | 5′-GGGTTGTTTGGGAATGCAGC-3′ |
LSU-4 | 5′-GTTAGACTCCTTGGTCCGTC-3′ |
Xerogyra hallgassi n. sp. | Xerogyra fiorii | Xerogyra spadae | Xerogyra grovesiana | Kherattolactea keratae | |
---|---|---|---|---|---|
Number of whorls | 5 ½ ± ½ (n = 11) | 5 ¼ ± ⅓ (n = 18) | 5 ⅓ ± ⅓ (n = 21) | 4 ¾ ± ½ (n = 15) | 5 ⅓ ± ⅓ (n = 6) |
Average diameter | 16.8 ± 0.3 (n = 11) | 11.8 ± 0.4 (n = 18) | 9.2 ± 0.1 (n = 21) | 8.9 ± 0.2 (n = 15) | 18.5 ± 0.4 (n =4) |
D/H | 2 (n = 11) | 1.8 (n = 18) | 1.5 (n = 21) | 2.2 (n = 15) | 1.8 (n = 4) |
Shell’s surface | radial fine growth striae | radial fine growth striae | radial fine growth striae | radial ribs | radial fine growth striae |
Bands along last whorl | none | very weak but visible | very weak but visible | None | weak to strong |
Last whorl | not keeled | not keeled | not keeled | Keeled | not keeled |
Umbilicus shape | remarkably eccentric | slightly eccentric | concentric | slightly eccentric | concentric |
D/U | >⅓ | ⅓ | ¼ | ¼ | ⅙ |
Aperture’s shape | broadly oval | roundish | roundish | subquadrangular | broadly oval |
Aperture’s internal callous | very mild to absent | mild | strong | absent | mild to strong |
Flagellum/epiphallus | 0.74 (n = 4) | 0.72 (n = 3) | 0.91 (n = 3) | 2.8 (n = 3) | 0.8 (n = 2) |
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Ezzine, I.K.; Bouaziz-Yahiatene, H.; De Mattia, W.; Neubert, E. New Insights in the Helicellini Ihering, 1909 with Description of Kherattolactea Gen. Nov. and the First Record of Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 from Algeria. Diversity 2025, 17, 550. https://doi.org/10.3390/d17080550
Ezzine IK, Bouaziz-Yahiatene H, De Mattia W, Neubert E. New Insights in the Helicellini Ihering, 1909 with Description of Kherattolactea Gen. Nov. and the First Record of Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 from Algeria. Diversity. 2025; 17(8):550. https://doi.org/10.3390/d17080550
Chicago/Turabian StyleEzzine, Issaad Kawther, Houria Bouaziz-Yahiatene, Willy De Mattia, and Eike Neubert. 2025. "New Insights in the Helicellini Ihering, 1909 with Description of Kherattolactea Gen. Nov. and the First Record of Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 from Algeria" Diversity 17, no. 8: 550. https://doi.org/10.3390/d17080550
APA StyleEzzine, I. K., Bouaziz-Yahiatene, H., De Mattia, W., & Neubert, E. (2025). New Insights in the Helicellini Ihering, 1909 with Description of Kherattolactea Gen. Nov. and the First Record of Orexana Chueca, Gómez-Moliner, Madeira & Pfenninger, 2018 from Algeria. Diversity, 17(8), 550. https://doi.org/10.3390/d17080550