MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Thu 22 January 2026
Bivalvia | Unionida | Unionoidea | Unionidae | Parreysiinae | Indochinellini | Indonaia
species Indonaia gratiosa (Philippi, 1843): specimens
4 available nominal species synonyms (5 total synonyms)
Recent Taxonomic Opinions
Contradens gratiosus — Graf & Cummings (2007), Zieritz et al. (2018), Konopleva et al. (2019), Graf & Cummings (2021)
Parreysia (Radiatula) occata — Graf & Cummings (2007), Ramakrishna & Dey (2007)
Parreysia (Radiatula) lima — Ramakrishna & Dey (2007)
Radiatula occata — Nesemann et al. (2007), Zieritz et al. (2018)
Parreysia occata — Bogan (2010), IUCN (2010)
Uniandra gratiosus — Bogan (2010), IUCN (2012)
Radiatula gratiosus — Pfeiffer et al. (2021)
Indonaia occata — Graf & Cummings (2021)
Indonaia (cylindrica-group) gratiosa — Bolotov et al. (2022), Bolotov et al. (2024)
Indonaia gratiosa — Bolotov et al. (2022)
Range
Distribution unknown but presumed to be from Indochina.
Map of Georeferenced Specimens
MUSSELp Specimen Records
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Bangladesh
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India
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Myanmar
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unknown
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Genbank Vouchers
Georeferenced Genbank Vouchers
Nepal
SMF_348834/17.15 [SMF_bf_75B]. (COI: OK480023, go to Genbank) Nepal: Jhajh nadi, 26.94°N, 85.31°E, Ganges River basin, Narayani Zone, Central Region.