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Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia


Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Gonideinae | Contradentini

genus Lens Simpson, 1900: species

5 available nominal genus synonyms (7 total synonyms) | cladomics

Included Species

Decorative image of a representative of Lens comptus

Lens comptus (Deshayes in Deshayes & Jullien, 1876)

syonymy (2 available, 3 total) | specimens (61 + 44 Genbank vouchers)

Range: Mekong River, Cambodia, Laos, and Thailand. (East Asia)

Genbank sequences: 16S, 28S, COI, SRA
IUCN Red List: Data Deficient (Harmandia munensis)
other links: MolluscaBase

Lens contradens (Lea, 1838)

syonymy (23 available, 36 total) | specimens (383 + 169 Genbank vouchers)

Range: Widespread from the Mekong in Vietnam to Sumatra and Java. (East Asia)

Genbank sequences: 16S, 18S, 28S, COI, H3, mtGenome, mtGenome M-type, SRA
IUCN Red List: Least Concern (Uniandra contradens), Least Concern (Physunio cambodiensis)
other links: MolluscaBase

Decorative image of a representative of Lens eximius

Lens eximius (Lea, 1856)

syonymy (2 available, 2 total) | specimens (97 + 22 Genbank vouchers)

Range: Mekong in Thailand, Cambodia, and Laos. (East Asia)

Genbank sequences: 16S, 18S, 28S, COI, ND1, SRA
IUCN Red List: Least Concern (Physunio eximius)
other links: MolluscaBase

Decorative image of a representative of Lens fultoni

Lens fultoni (Haas, 1930)

syonymy (1 available, 1 total) | specimens (1)

Range: Vietnam. (East Asia)

other links: MolluscaBase

Decorative image of a representative of Lens inornatus

Lens inornatus (Lea, 1856)

syonymy (1 available, 1 total) | specimens (34 + 9 Genbank vouchers)

Range: Mekong in Cambodia, Thailand and Laos, and west to the Chao Phraya. (East Asia)

Genbank sequences: COI, SRA
IUCN Red List: Least Concern (Physunio inornatus)
other links: MolluscaBase

Decorative image of a representative of Lens lugens

Lens lugens (Drouët & Chaper, 1892)

syonymy (3 available, 4 total) | specimens (34)

Range: Borneo. (East Asia)

Genbank sequences: 18S, 28S, COI, ND1
other links: MolluscaBase

Decorative image of a representative of Lens maenamensis

Lens maenamensis Pfeiffer, Graf, Cummings & Page, 2021

syonymy (1 available, 2 total) | specimens (46 + 38 Genbank vouchers)

Range: Mekong Basin, Thailand, Cambodia, and Laos. (East Asia)

Genbank sequences: 16S, 28S, COI, H3, SRA
other links: MolluscaBase

Decorative image of a representative of Lens micropterus

Lens micropterus (Morelet, 1866)

syonymy (10 available, 15 total) | specimens (123 + 49 Genbank vouchers)

Range: Lower Mekong, Thailand, Laos, Cambodia, and Vietnam. (East Asia)

Genbank sequences: 16S, 28S, COI, SRA
IUCN Red List: Least Concern (Physunio micropterus)
other links: MolluscaBase

Lens misellus (Morelet, 1865)

syonymy (2 available, 3 total) | specimens (14 + 8 Genbank vouchers)

Range: Thailand and Vietnam. (East Asia)

Genbank sequences: 16S, 28S, COI, SRA
IUCN Red List: Data Deficient (Trapezoideus misellus)
other links: MolluscaBase

Lens novoselovi (Konopleva, Bolotov, Spitsyn, Kondakov, Gofarov & Vikhrev, 2019)

syonymy (1 available, 1 total) | specimens (0 + 3 Genbank vouchers)

Range: Mekong Basin, Laos. (East Asia)

Genbank sequences: 16S, 28S, COI
other links: MolluscaBase

Decorative image of a representative of Lens pallegoixi

Lens pallegoixi (Sowerby, 1867)

syonymy (1 available, 1 total) | specimens (30 + 4 Genbank vouchers)

Range: Mun River, Thailand. (East Asia)

Genbank sequences: 16S, 28S, COI, SRA
other links: MolluscaBase

Decorative image of a representative of Lens rolfbrandti

Lens rolfbrandti (Jeratthitikul & Panha in Jeratthitikul et al., 2019)

syonymy (1 available, 1 total) | specimens (4 + 4 Genbank vouchers)

Range: Known from the Huai Luang River (Mekong Basin) in Thailand, and Laos. (East Asia)

Genbank sequences: 16S, 28S, COI, H3
other links: MolluscaBase

Decorative image of a representative of Lens semmelinki

Lens semmelinki (Martens, 1891)

syonymy (1 available, 2 total) | specimens (3)

Range: Borneo and Sumatra. (East Asia)

IUCN Red List: Data Deficient (Uniandra semmelinki)
other links: MolluscaBase

 
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