Pinna pereria, Simone, 2024
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publication ID |
https://doi.org/10.11606/1807-0205/2024.64.031 |
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persistent identifier |
https://treatment.plazi.org/id/4008878E-FF86-A874-8B8F-DA36FD07FC01 |
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treatment provided by |
Felipe |
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scientific name |
Pinna pereria |
| status |
sp. nov. |
Pinna pereria View in CoL new species
( Fig. 54 View Figure 54 ) https://zoobank.org/ 429DA8F7-89FD-4179-ADDD-BE96D7F2310D
Types: Holotype MZSP 165700 View Materials , specimen . Paratypes: MZSP 28508 View Materials , 4 View Materials spm from type locality. BRAZIL. Bahia ; Salvador, Porto da Barra , 13°00′11.51″S 38°31′58.9″W, MZSP 131559 View Materials , 2 View Materials shells (G.J.P. Queiroz col., i.1981; Colella collection) GoogleMaps .
Type locality: BRAZIL. Bahia ; Salvador, Farol da Barra , 10°00′37.44″S 38°31′32.69″W, 5 m [Simone col., 22.ii.1997] GoogleMaps .
Diagnosis: NE Brazilian species, with adult up to ~ 150 mm; color whitish to light yellow, transparent. Umbonal angle ~45-50°. Sculpture 6-8 radial wide folds in dorsal ⅔ region only, relatively uniform or sinuous, each fold initially narrow; scales absent.
Description: Shell up to ~ 160 mm. Basic color whitish to light yellow; walls thin, rather flexible, transparent. Antero-posteriorly long, 2.3-2.5 times longer than heigh; flattened, ~5.6 times longer than wide. Middle blunt longitudinal weakly carina weakly developed, more pronounced in anterior third ( Fig. 54A, B View Figure 54 , D-H). Sculpture growth lines, with weak concentric undulations in more posterior regions; lacking scales; 6 ( Fig. 54A, B View Figure 54 , F-H) to 8 ( Fig. 54D, E View Figure 54 ) radial (longitudinal) folds, all of them initially narrow, with interspaces equivalent to their width in anterior third; gradually becoming less nitid, as simple undulations in middle and posterior thirds, but present up to posterior edge, producing barely undulated posterior edge ( Fig. 54E,G View Figure 54 ). Dorsal edge practically straight; ventral edge straight ( Fig. 54E, D View Figure 54 ), slightly concave ( Fig. 54 View Figure 54 A-B) to sightly convex ( Fig. 54 View Figure 54 F-H); posterior edge ample. Hinge edentulous, with ligament all along it, from anterior beak, up to short region posterior to posterior edge ( Fig. 54G View Figure 54 ). Posterior region and posterior half of ventral region with opened gap ( Fig. 54C View Figure 54 ). Inner surface glossy, with pair of iridescent regions in anterior third, separated by narrow longitudinal opaque band ( Fig.54G View Figure 54 ); muscular scars not clear.
Etymology: The specific epithet is a Latinization of the native Guarani word pererĩ, meaning "fragile," in allusion to the very fragile, almost friable shell.
Distribution: Coast of Rio Grande do Norte to Bahia, including Fernando de Noronha oceanic Island.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.