Published December 22, 2023
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APPENDIX 7 in Shallow-water Rissoidae of the genera Alvania Risso 1826 Haurakia Iredale 1915 Parashiela Laseron 1956 Simulamerelina Ponder 1985 and Subestea Cotton 1944 Gastropoda Caenogastropoda Rissooidea from French Polynesia with the description of a new deep-water genus
Authors/Creators
- 1. Largo Giuseppe Veratti, 37 / D, I- 00146 Roma (Italy) bruno _ amati @ yahoo. it
- 2. Dipartimento di Scienze, LIME Lab, Università " Roma Tre ", Viale Marconi, 446, I- 00146 Roma (Italy) and NBFC, National Biodiversity Future Center, Palermo I- 90133 (Italy) andrea. digiulio @ uniroma 3. it
- 3. Dipartimento di Biologia e Biotecnologie ' Charles Darwin', Sapienza Università di Roma, Viale dell'Università 32, I- 00185 Roma (Italy) marco. oliverio @ uniroma 1. it
Description
APPENDIX 7. — Measurements of teleoconch and protoconch of Alvania uapou n. sp. in mm, with range, mean and standard deviation: 1, holotype, Marquesas, Ua Pou, Motu Mokohe Stn 20, 10-15 m; 2-5, paratypes, Marquesas, Ua Pou, Motu Mokohe Stn 20, 10-15 m; 6-10, Society, Mont Otaha, 788-836 m.
| Teleoconch | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Min–max | Mean | Std |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Height | 1.70 | 1.72 | 1.65 | 1.57 | 1.72 | 1.60 | 1.75 | 1.72 | 1.82 | 1.62 | 1.57-1.82 | 1.69 | 0.076 |
| Width | 0.90 | 0.87 | 0.85 | 0.90 | 0.92 | 0.97 | 0.90 | 0.90 | 0.95 | 0.90 | 0.85-0.97 | 0.91 | 0.035 |
| Height/Width ratio | 1.89 | 1.98 | 1.94 | 1.71 | 1.87 | 1.65 | 1.94 | 1.91 | 1.92 | 1.80 | 1.65-1.98 | 1.86 | 0.108 |
| Aperture height | 0.60 | 0.65 | 0.60 | 0.60 | 0.62 | 0.62 | 0.60 | 0.65 | 0.65 | 0.65 | 0.60-0.65 | 0.62 | 0.024 |
| Height/aperture height ratio 2.83 | 2.65 | 2.75 | 2.62 | 2.77 | 2.58 | 2.92 | 2.65 | 2.80 | 2.49 | 2.49-2.92 | 2.71 | 0.130 | |
| No. whorls | 3.50 | 3.35 | 3.50 | 3.25 | 3.30 | 3.20 | 3.40 | 3.50 | 3.20 | 3.20 | 3.20-3.50 | 3.34 | 0.129 |
| No. axial ribs on last whorls14 | 19 | 16 | 17 | 20 | 21 | ? | 22 | 21 | 25 | 14-25 | 19.4 | 3.36 | |
| No. spiral cords on last | 9 (4) | 8(4) | 8(4) | 8(4) | 8(4) | 8(4) | 9(4) | 9(4) | 9(4) | 9(4) | 8-9(4) | 8.5 (4) | 0.53 (0) |
| whorls (above aperture) | |||||||||||||
| Start I | 0.2 | 0.5 | 1 | 0.25 | 0.2 | 0.2 | 0.4 | 0.4 | 0.2 | 0.4 | 0.2-1 | 0.37 | 0.246 |
| Protoconch | 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | Min–max | Mean | Std |
| Height | 0.250 | 0.237 | 0.262 | 0.237 | 0.237 | 0.275 | 0.275 | 0.275 | 0.287 | 0.282 | 0.237-0.287 | 0.262 | 0.019 |
| Diameter of nucleus | 0.100 | 0.100 | 0.100 | 0.100 | 0.100 | 0.120 | 0.112 | 0.120 | 0.125 | 0.125 | 0.100-0.125 | 0.110 | 0.011 |
| Diameter of first half whorl | 0.175 | 0.187 | 0.187 | 0.187 | 0.187 | 0.212 | 0.200 | 0.200 | 0.212 | 0.220 | 0.175-0.220 | 0.197 | 0.015 |
| Maximun diameter | 0.287 | 0.300 | 0.300 | 0.300 | 0.312 | 0.312 | 0.300 | 0.300 | 0.325 | 0.337 | 0.287-0.337 | 0.307 | 0.015 |
| No. whorls | 1.40 | 1.35 | 1.35 | 1.30 | 1.35 | 1.25 | 1.30 | 1.35 | 1.35 | 1.30 | 1.25-1.40 | 1.33 | 0.042 |
| Paucispiral | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | – | – |
Notes
Published as part of Amati, Bruno, Giulio, Andrea Di & Oliverio, Marco, 2023, Shallow-water Rissoidae of the genera Alvania Risso 1826 Haurakia Iredale 1915 Parashiela Laseron 1956 Simulamerelina Ponder 1985 and Subestea Cotton 1944 Gastropoda Caenogastropoda Rissooidea from French Polynesia with the description of a new deep-water genus, pp. 886 in Zoosystema 45 (25) on page 886, DOI: 10.5252/zoosystema2023v45a25, http://zenodo.org/record/10458066
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Related works
- Is part of
- Journal article: 10.5252/zoosystema2023v45a25 (DOI)
- Journal article: urn:lsid:plazi.org:pub:FFDAFF890B69750DFFB24B64EC17FF88 (LSID)
- Journal article: http://publication.plazi.org/id/FFDAFF890B69750DFFB24B64EC17FF88 (URL)
- Journal article: http://zenodo.org/record/10458066 (URL)
- Journal article: http://zoobank.org/054D312B-C54B-459D-8A47-AC9CB681D7D4 (URL)