Geometric morphometrics of donacids from Brazil reveals a new species, Donax trapesialis n. sp. from Northeastern coast

This dataset contains the digitized treatments in Plazi based on the original journal article Guerra, Juliano, Castro, Guerra de, Martinez, Pablo Ariel, Passos, Flávio Dias, Marques, Rodrigo Cesar, Siqueira, Ana Paula, Dornellas, Siqueira (2025): Geometric morphometrics of donacids from Brazil reveals a new species, Donax trapesialis n. sp. from Northeastern coast. Zoosystema 47 (19): 399-412, DOI: 10.5252/zoosystema2025v47a19, URL: sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2025v47a19.pdf ABSTRACT The genus Donax Linnaeus, 1758 comprises 90 described bivalve species, five of which occur on the Brazilian coast.

No taxonomic investigation has been conducted on the Donax species found along the Sergipe coast (Northeastern Brazil). In order to fill some of these gaps in the knowledge about Brazilian donacids, we employed conchological analysis and geometric morphometric approaches to compare the morphology of donacids in Sergipe with D. gemmula Morrison, 1971 from southeastern Brazil, species with which they closely resembled. Our conchological analysis revealed two morphotypes within the Donax genus.