MUSSELp

MUSSELpdb

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Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
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Geography

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Species Richness & Endemism by
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Data last updated
Mon 1 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Gonideinae | Contradentini | Lens

species Lens maenamensis Pfeiffer, Graf, Cummings & Page, 2021: specimens

1 available nominal species synonym (2 total synonyms)

Recent Taxonomic Opinions

Contradens crossei — Jeratthitikul et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020), Graf & Cummings (2021)
Lens maenamensis — Pfeiffer et al. (2021), Jeratthitikul et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023), Zieritz et al. (2024)

Range

Mekong Basin, Thailand, Cambodia, and Laos.

Map of Georeferenced Specimens

specimens map of Lens maenamensis

MUSSELp Specimen Records

image of lot SMF_MP_06
SMF_MP_06

image of lot MNHN_MP_3770
MNHN_MP_3770
Cochinchine

image of lot MNHN_MP_3774
MNHN_MP_3774
Cochinchine

Cambodia

image of lot MNHN_MP_3780
MNHN_MP_3780
Cambodge

image of lot MNHN_MP_3858
MNHN_MP_3858
Cambodge

image of lot FMNH_21761
FMNH_21761
Cambodia

image of lot USNM_84061
USNM_84061
Cambodia

image of lot USNM_84061
USNM_84061
Cambodia

image of lot ANSP_125658
ANSP_125658
Cambodia, Asia

image of lot UMMZ_110006
UMMZ_110006
Cambodia, French Indo China

image of lot UF_507397
UF_507397
Tonle Kong River just upstream of island, 8.3 miles NE of AH11 bridge near Stung Treng. CA16-04. 13.60938 ,106.09245

image of lot UF_507392
UF_507392
Tonle Sekong River, 1.6 miles upstream from AH11 Bridge. CA16-03. 13.54504, 106.01353

image of lot UF_507382
UF_507382
Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung. Srae Angkrorng, Ratanakiri, Cambodia. CA16-01. 13.44339, 106.60329

Laos

image of lot NCSM_84904
NCSM_84904
Asia, Mekong Basin/Bang Fai R. Laos, Khammouan, Mahaxay Co. Nam Oula, near Ban Phonexay, [2.93 air miles NNW center Ban Sang Phoc]. 17.36628° N, 105.3511° E

image of lot NCSM_84904
NCSM_84904
Asia, Mekong Basin/Bang Fai R. Laos, Khammouan, Mahaxay Co. Nam Oula, near Ban Phonexay, [2.93 air miles NNW center Ban Sang Phoc]. 17.36628° N, 105.3511° E

image of lot MNHN_MP_3092
MNHN_MP_3092
Laos

image of lot MNHN_MP_3092
MNHN_MP_3092
Laos

image of lot SMF_319231
SMF_319231
Laos: Huai Nam Don NE Takek

image of lot SMF_319231
SMF_319231
Laos: Huai Nam Don NE Takek

image of lot SMF_220848
SMF_220848
Laos: Mekong at Takek

image of lot SMF_319249
SMF_319249
Laos: Mekong River between Takek and Nakon Panom

image of lot SMF_188840
SMF_188840
Mekong at Takek, Laos

image of lot SMRL_2346_40
SMRL_2346_40
Mekong between Takek and Nakon Panom, Thailand

Thailand

image of lot NCSM_26913
NCSM_26913
Asia, Mekong Basin/Mekong R. Thailand, Sakon Nakhon, Sakon Nakhon, [Point estimated in center of Sakon Nakhon]. 17.1667° N, 104.15° E

image of lot UF_507817
UF_507817
Bang Sai River at Rt. 2292 bridge. TH16-44. 16.737, 104.520

image of lot USNM_786277
USNM_786277
Huai Mae Un at Sri Songkram, Nakon Prov. Thailand

image of lot SMF_319245
SMF_319245
Huai Thuai, Tha Uthen, Nakon Panom

image of lot SMF_319245
SMF_319245
Huai Thuai, Tha Uthen, Nakon Panom

image of lot SMF_188836
SMF_188836
Maenam Kham, Tat Panaom

image of lot SMF_188843
SMF_188843
Maenam Songkram Sri Songkram

image of lot MNHN_MP_3839
MNHN_MP_3839
Maenam Songram, Prov. Saicon Nakon, thailand

image of lot USNM_419864
USNM_419864
Nong Han, Sakon Nakon, E. Siam

image of lot UF_507767
UF_507767
Songkhram River at bridge W of Ban Na Si Nuan on Rt. 2281. TH16-30. 17.729, 103.411

image of lot UF_507633
UF_507633
Songkhram River at confluence with Mao River. TH15-11. 17.70202, 104.25579

image of lot UF_507641
UF_507641
Songkhram River at confluence with Yam River. TH15-12. 17.70906, 104.07671

image of lot UF_381376
UF_381376
Thailand, Nakhon Phanom Province, muddy bank of Songkhram River, near town of Si Song Khram, 17.6252°, 104.2426°

image of lot SMF_188844
SMF_188844
Thailand: Huai Mae Un at Sri Songkram, Province Nakon Panom

image of lot SMF_319232
SMF_319232
Thailand: Huai Mae Un bei Sri Songkram

image of lot USNM_786290
USNM_786290
Thailand: Huai Mae Un, Sri Songkram, Nakon Panom

image of lot SMF_205125
SMF_205125
Thailand: Huai Un at Sri Songkram

image of lot USNM_786289
USNM_786289
Thailand: Maenam Songkram

image of lot USNM_786280
USNM_786280
Thailand: Maenam Songkram Wanonivat [= Wanon Niwat], Sakon Nakon

image of lot BMNH_MP_0607
BMNH_MP_0607
Thailand: Maenam Songkram, N of Wannonivat, Sakon Nakon Prov.

image of lot USNM_786278
USNM_786278
Thailand: Maenam Songkram, Ta Uthen, Nakon Panom Province

image of lot SMF_188837
SMF_188837
Thailand: Nakon Panom Prov. MAenam Songkram, Ta Uthen

image of lot BMNH_MP_0609
BMNH_MP_0609
Thailand: Songkram River at Wannonivat [= Wanon Niwat], Sakon Nakon Prov.

image of lot MNHN_MP_3850
MNHN_MP_3850
Thailand: Songkram River at Wannonivat [= Wanon Niwat], Sakon Nakon Prov.

image of lot SMF_188839
SMF_188839
Thailands: Maenam Songkram Wanonivat; Sakon Nakon

image of lot UF_507804
UF_507804
Thuai River at Rt. 212 bridge S of Tha Uthen. TH16-39. 17.562, 104.609

image of lot UF_507784
UF_507784
Un River at bridge approx. 3 km E of Ban Na Wha. TH16-32. 17.480, 104.129

image of lot UF_507773
UF_507773
Un River at Rt. 222 bridge [error - Pla Hang at Rt 222 bridge] TH16-31. 17.443, 103.728

Genbank Vouchers

Georeferenced Genbank Vouchers

Cambodia

UF_507397 (ICH-00480). (COI: MT905645, go to Genbank) Cambodia, Tonle Kong River just upstream of island, 8.3 miles NE of AH11 bridge near Stung Treng (13.609383, 106.092445).

UF_507397 (ICH-00481). (COI: MT905646, go to Genbank) ditto.

UF_507397 (ICH-00482). (COI: MT905647, go to Genbank) ditto.

UF_507397 (ICH-00483). (COI: MT905648, go to Genbank) ditto.

UF_507397 (ICH-00484). (COI: MT905649, go to Genbank) ditto.

UF_507392 (ICH-00438). (COI: MT905626, go to Genbank) Cambodia, Tonle Sekong River, 1.6 miles upstream from AH11 Bridge (13.545038, 106.013527).

UF_507392 (ICH-00441). (COI: MT905629, go to Genbank) ditto.

UF_507392 (ICH-00442). (COI: MT905630, go to Genbank) ditto.

UF_507392 (ICH-00443). (COI: MT905631, go to Genbank) ditto.

UF_507392 (ICH-00444). (COI: MT905632, go to Genbank) ditto.

UF_507382 (ICH-00413). (COI: MT905613, go to Genbank) Cambodia, Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung (13.443388, 106.603294).

UF_507382 (ICH-00416_AHE). (COI: MT905615, go to Genbank) ditto.

UF_507382 (ICH-00416). (COI: MT905614, SRA: SRX8934367, go to Genbank) ditto.

Laos

MUMNH_UNI0946. (COI: MG582015, H3: MG582058, go to Genbank) Huai Thahao, Savannakhet, Laos (16° 51' 54.1" N 104° 54' 15.2" E).

MUMNH_UNI1174. (COI: MG582013, H3: MG582056, go to Genbank) Nam Don River, Thakhek, Khammouane, Laos (17° 26' 32.9" N 104° 51' 22.2" E).

MUMNH_UNI1111. (COI: MG582011, H3: MG582054, go to Genbank) Nam Hin Boun River, Hin Boun City, Khammouane, Laos (17° 35' 49.5" N 104° 37' 05.7" E).

MUMNH_UNI0956. (COI: MG582012, H3: MG582055, go to Genbank) Nam Pakan River, Nam Pakan, Khammouane, Laos (17° 39' 52.22" N 104° 37' 37.0" E).

MUMNH_UNI1164. (COI: MG582014, H3: MG582057, go to Genbank) Xe Nou River, Ban Dong Mak Fai, Savannakhet, Laos (17° 04' 22.3" N 105° 02' 54.9" E).

Thailand

MUMNH_UNI0215. (COI: MG582010, H3: MG582053, go to Genbank) Bung River, Phra Song, Na Kae, Nakhon Phanom, Thailand (17° 00' 40.1" N 104° 34' 06.2" E).

MUMNH_UNI0205. (COI: MG582009, H3: MG582052, go to Genbank) Kam River, Na Khu, Na Kae, Nakhon Phanom, Thailand (16° 57' 29.2" N 104° 30' 16.3" E).

MUMNH_UNI0253. (16S: MT993694, 28S: MT993746, COI: MG582007, H3: MG582050, go to Genbank) Songkhram River at Thung Fon, Udon Thani, Thailand (17° 27' 06.5" N, 103° 16' 50.4" E).

UF_507817 (ICH-00861). (COI: MT905819, go to Genbank) Thailand, Bang Sai River at Rt. 2292 bridge (16.736793, 104.519524) .

UF_507817 (ICH-00862). (COI: MT905820, go to Genbank) ditto.

UF_507767 (ICH-00781). (COI: MT905783, go to Genbank) Thailand, Songkhram River at bridge W of Ban Na Si Nuan on Rt. 2281 (17.72947, 103.410732).

UF_507767 (ICH-00782). (COI: MT905784, go to Genbank) ditto.

UF_507767 (ICH-00783). (COI: MT905785, go to Genbank) ditto.

UF_507633 (2014-0654). (COI: MT905552, go to Genbank) Thailand, Songkhram River at confluence with Mao River (17.70202, 104.25579).

UF_507641 (2014-0665). (COI: MT905554, go to Genbank) Thailand, Songkhram River at confluence with Yam River (17.709055, 104.076712).

UF_507641 (2014-0666). (COI: MT905555, go to Genbank) ditto.

UF_507641 (2014-0667). (COI: MT905556, go to Genbank) ditto.

UF_507804 (ICH-00837). (COI: MT905810, go to Genbank) Thailand, Thuai River at Rt. 212 bridge S of Tha Uthen (17.562192, 104.609067) .

UF_507804 (ICH-00838). (COI: MT905811, go to Genbank) ditto.

UF_507804 (ICH-00839). (COI: MT905812, go to Genbank) ditto.

UF_507804 (ICH-00840). (COI: MT905813, go to Genbank) ditto.

UF_507784 (ICH-00800). (COI: MT905792, go to Genbank) Thailand, Un River at bridge approx. 3 km E of Ban Na Wha (17.480165, 104.129469).

UF_507773 (ICH-00763). (COI: MT905779, go to Genbank) Thailand, Un River at Rt. 222 bridge (17.442618, 103.727625).

UF_507773 (ICH-00764). (COI: MT905780, go to Genbank) ditto.

MUMNH_UNI0271. (COI: MG582008, H3: MG582051, go to Genbank) Yam River, Charoen Sin, Charoen Sin, Sakon Nakhon, Thailand (17° 31' 56.1" N 103° 33' 39.0" E).