species Lens comptus (Deshayes in Deshayes & Jullien, 1876): specimens

2 available nominal species synonyms (3 total synonyms)

Recent Taxonomic Opinions

Harmandia munensis — Graf & Cummings (2007), Bogan (2010), IUCN (2012), Zieritz et al. (2018)
Trapezoideus exolescens — He & Zhuang (2013)
“Contradens semmelinki fultoni” ** — Lopes-Lima et al. (2017)
Contradens sp. 6 — Bolotov et al. (2017)
Contradens sp. “Nam Long” — Bolotov et al. (2017)
Trapezoideus comptus — Pfeiffer et al. (2018)
Contradens sp. ‘Nam long’ — Bolotov et al. (2018)
Contradens comptus — Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020), Zieritz et al. (2020), Graf & Cummings (2021)
Contradens sp. 'Nam Long' — Huang et al. (2019)
Lens comptus — Pfeiffer et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023), Dai et al. (2023), Zieritz et al. (2024), Dai et al. (2024), Dai et al. (2025), Chen et al. (2025), Campbell & Lydeard (2026), Zieritz et al. (2026)

Range

Mekong River, Cambodia, Laos, and Thailand. (East Asia: AS5)

Map of Georeferenced Specimens

specimens map of Lens comptus

MUSSELp Specimen Records

Type Specimens

SMF_220828
Thailand: Mun River at Phibun Mangsahan
holotype
Harmandia munensis Brandt, 1974

MNHN_IM-2000-1661
Peam Chelang, Cambodge
syntype
Unio comptus Deshayes in Deshayes & Jullien, 1874

Other Specimens by Country | show by collection

5 Specimens from [blank]

NCSM_85232
Asia, Mekong Basin/Ngum R. Laos, Xiangkhoang, Nam Ngum at end of logging road southwards from Ban Xiangdet [approx. 3.61 air miles SSE], [2.22 air miles NNW center Bounglouang], 19.38167° N, 102.7389° E

UMMZ_110864
Cochinchine

MNHN_MP_3356
Cochinchine

MNHN_MP_3366
Cochinchine

UMMZ_110869
Southeastern Asia

11 Specimens from Cambodia

UMMZ_23070
Cambogia

MNHN_MP_3348
Mekong River at Stung Treng, Cambodia

UF_507417
Mekong River, 1.4 miles upstream from Sambour. CA16-08. 12.79459, 105.97255

UF_507403
Mekong River, 5.17 miles upstream of Mekong and Sekong Confluence. CA16-05. 13.59515, 106.01447

UF_507423
Mekong River, 700 ft downstream of Sandan. CA16-09. 12.68691, 106.01697

UF_507429
Mekong River, upstream of fishing village near the confluence of Tonle Sap River. CA16-10. 11.57207, 104.94050

MNHN_MP_3595
Srepock, Cambodge, a l’est de Stung Treng

UF_507396
Tonle Kong River just upstream of island, 8.3 miles NE of AH11 bridge near Stung Treng. CA16-04. 13.60938 ,106.09245

UF_507390
Tonle Sekong River, 1.6 miles upstream from AH11 Bridge. CA16-03. 13.54504, 106.01353

UF_507386
Tonle Srepok River, bridge just north of Phumi Srê Ta Chan, Cambodia. CA16-02. 13.50248, 106.35194

UF_507380
Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung. Srae Angkrorng, Ratanakiri, Cambodia. CA16-01. 13.44339, 106.60329

29 Specimens from Laos

NCSM_85228
Asia, Mekong Basin/Ngum R. Laos, Vientiane, Nam San, rapids near km mark 54 on from Thatbok to Phubia mine, about [8.7 air] km S [center] of Xieng Mi, 10[air] km N [center] of Ban Longxan, 18.595° N, 103.0781° E

NCSM_83060
Asia, Mekong Basin/Ou R./Long R. Laos, Phôngsali, Nam Long, at confluence with Nam Ou, about [6] km upstream of Ban Hatxa [Ban Hatxông], [2.6 air km N center Phông Sali]. 21.76778° N, 102.1958° E

MNHN_MP_3350
Huai Kai, near Pakse, Laos

SMF_205127
Laos;:Mekopng branch at Ban Done Det, S of Khong

SMF_319484
Laos: Huai Kei bei Pakse

SMF_319382
Laos: Mekong at Cham Pasak

SMF_205137
Laos: Mekong Branch at Ban Done Det, S of Khong

UMMZ_248794
Laos: Mekong River at Khong, South Laos

MNHN_MP_3354
Laos: Mekong River at Muang Khong

SMF_205126
Laos: Sedone River at Ban Hua Daeng, 9 km N of Pakse

SMF_239260
Laos: Xedone River at Ban Hua Daeug, 8 km N of Pakse

USNM_786269
Laos: Xedone River, at Ban Hua Daeng, 9 km N Pakse

MNHN_MP_3357
Luang Prabang

MNHN_MP_2875
Luang Prabang

USNM_786265
Mekong at Ban Done Det, Laos

SMRL_16888
Mekong branch at Ban Don Det

SMF_319383
Mekong Khong Island Laos

SMF_319410
Mekong River at Khone Prov. Sithandone

MNHN_MP_3361
Minam Feau Massie, Laos

MNHN_MP_PARIS2
Nam - Ou, Laos

MNHN_MP_3347
Nam - Ou, Laos

UMMZ_110873
Nam - Ou, Laos, Indo China

MNHN_MP_3749
Nam Co A Muong Sai, Haut Laos

UA_20998
Nam Ou, Haat Veune Rapids, downstream of Gnot Ou, Phongsali Province, Laos

UA_20999
Nam Ou, Haat Veune Rapids, downstream of Gnot Ou, Phongsali Province, Laos

UMMZ_304347
Nam Ou, Haat Veune Rapids, downstream of Gnot Ou, Phongsali Province, Laos (22°4’40” N, 101°46’ 0” E)

SMF_13700
Nam Ou, Laos

MNHN_MP_3690
Nam Pak, Nam Co, Nam Lan, Haut Laos

MNHN_MP_3346
Riv. Menam, Laos Occidental

11 Specimens from Thailand

MNHN_MP_3351
de la riviere Salabury, Siam

MNHN_MP_3364
de la riviere Salabury, Siam

UF_507827
Mekong River at Ban Hin Khan on Rt. 2034. TH16-46. 16.134, 105.032

UF_507795
Mekong River at Ban Huai Sueam Nuea on Rt. 212. TH16-36. 18.416, 103.546

UF_507792
Mekong River at Ban Tha Pho on Rt. 212. TH16-35. 18.339, 103.721

UF_507833
Mekong River at Muk River mouth in Mukdahan. TH16-48. 16.546135, 104.731717

UF_507751
Mekong River at Nong Khai. TH16-26. 17.882, 102.735

SMF_13702
Salabury, Siam

MNHN_MP_3352
Siam

ANSP_339099
Thailand: Ubon Prov., Khemmarat Amphoe Mekong River

UF_507758
Trib. of Mekong River at Rt. 211 bridge approx. 3 km S of Ban Muang. TH16-28. 18.151, 102.179

3 Specimens from Vietnam

NCSM_84934
Asia, Hong Basin (Red Basin)/Đà R. (Black R./Lixian R.-China)/Lûm R. Vietnam, Mien nui va trung du (Northeastern), Lai Chau Co. [Nâm Lûm/Lûm River]. Phong Tho, Phong Tho district, [1.23 air miles E center Phong Tho]. 22.54264° N, 103.3117° E

NCSM_84935
Asia, Mā Basin /Lu R./Lúa R. Vietnam, Tây Bắc (Northwest), Dien Bien Co. Nam Lúa, near Núa Ngam, [0.33 air miles E center Hát He]. 21.26553° N, 103.0472° E

MNHN_MP_3353
Tonkin...

GenBank Vouchers

Georeferenced GenBank Vouchers

Cambodia

UF_507417 (ICH-00547). (COI: MT905675, go to GenBank) Cambodia, Mekong River, 1.4 miles upstream from Sambour (12.794587, 105.972551).

UF_507417 (ICH-00554). (COI: MT905678, go to GenBank) ditto.

UF_507417 (ICH-00555). (COI: MT905679, go to GenBank) ditto.

UF_507417 (ICH-00556). (COI: MT905680, go to GenBank) ditto.

UF_507417 (ICH-00557). (COI: MT905681, go to GenBank) ditto.

UF_507403 (ICH-00503). (COI: MT905654, go to GenBank) Cambodia, Mekong River, 5.17 miles upstream of Mekong and Sekong Confluence (13.595154, 106.014469).

UF_507403 (ICH-00504). (COI: MT905655, go to GenBank) ditto.

UF_507403 (ICH-00505). (COI: MT905656, go to GenBank) ditto.

UF_507403 (ICH-00506). (COI: MT905657, go to GenBank) ditto.

UF_507403 (ICH-00507). (COI: MT905658, go to GenBank) ditto.

UF_507396 (ICH-00469). (COI: MT905641, 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_507396 (ICH-00470). (COI: MT905642, go to GenBank) ditto.

UF_507396 (ICH-00471). (16S: MH346013, 28S: MH345993, COI: MH345973, go to GenBank) ditto.

UF_507396 (ICH-00472). (COI: MT905643, go to GenBank) ditto.

UF_507396 (ICH-00473). (COI: MT905644, go to GenBank) ditto.

UF_507396 (ICH-00474). (16S: MH346014, 28S: MH351013, 28S: MH345994, COI: MH350968, COI: MH345974, go to GenBank) ditto.

UF_507390 (ICH-00451). (COI: MT905633, go to GenBank) Cambodia, Tonle Sekong River, 1.6 miles upstream from AH11 Bridge (13.545038, 106.013527).

UF_507380 (ICH-00407). (COI: MT905608, go to GenBank) Cambodia, Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung (13.443388, 106.603294).

UF_507380 (ICH-00408). (COI: MT905609, go to GenBank) ditto.

UF_507380 (ICH-00409). (COI: MT905610, go to GenBank) ditto.

UF_507380 (ICH-00410). (COI: MT905611, go to GenBank) ditto.

UF_507380 (ICH-00411). (COI: MT905612, go to GenBank) ditto.

UF_507382 (ICH-00418). (COI: MT905616, go to GenBank) ditto.

UF_507423 (ICH-00562). (COI: MT905683, go to GenBank) Thailand, Mekong River, 700 ft downstream of Sandan (12.68691, 106.016966).

UF_507423 (ICH-00563_AHE). (COI: MT905685, go to GenBank) ditto.

UF_507423 (ICH-00563). (COI: MT905684, SRA: SRX8934355, go to GenBank) ditto.

UF_507429 (ICH-00576). (16S: MH346015, 28S: MH345995, COI: MH345975, go to GenBank) Thailand, Mekong River, upstream of fishing village near the confluence of Tonle Sap River (11.572071, 104.940501).

UF_507429 (ICH-00577). (16S: MH346016, 28S: MH345996, COI: MH345976, go to GenBank) ditto.

UF_507429 (ICH-00578). (COI: MT905692, go to GenBank) ditto.

Laos

RMBH_biv_182_10. (28S: KX865803, COI: KX865932, go to GenBank) Laos: Mekong River basin, Nam Long River.

RMBH_biv_182_12. (16S: KX865685, 28S: KX865802, COI: KX865931, go to GenBank) ditto.

RMBH_biv_182_3. (16S: KX865684, 28S: KX865801, COI: KX865930, go to GenBank) ditto.

Thailand

UF_507795 (ICH-00819). (COI: MT905801, go to GenBank) Thailand, Mekong River at Ban Huai Sueam Nuea on Rt. 212 (18.416475, 103.546337) .

UF_507792 (ICH-00812). (COI: MT905797, go to GenBank) Thailand, Mekong River at Ban Tha Pho on Rt. 212 (18.338504, 103.720589).

UF_507792 (ICH-00813). (COI: MT905798, go to GenBank) ditto.

UF_507792 (ICH-00814). (COI: MT905799, go to GenBank) ditto.

UF_507833 (ICH-00892). (COI: MT905836, go to GenBank) Thailand, Mekong River at Muk River mouth in Mukdahan (16.546135, 104.731717) .

UF_507833 (ICH-00893). (COI: MT905837, go to GenBank) ditto.

UF_507751 (ICH-00750). (16S: MH346017, 28S: MH345997, COI: MH345977, go to GenBank) Thailand, Mekong River at Nong Khai (17.882349, 102.735204).

UF_507751 (ICH-00751). (COI: MT905776, go to GenBank) ditto.

UF_507751 (ICH-00752). (16S: MH346018, 28S: MH345998, COI: MH345978, go to GenBank) ditto.

UF_507758 (ICH-00737). (COI: MT905772, go to GenBank) Thailand, Trib. of Mekong River at Rt. 211 bridge approx. 3 km S of Ban Muang (18.15107, 102.178987).

RMBH_biv_119_5. (16S: KX865682, 28S: KX865799, COI: KX865928, go to GenBank) Thailand: Mekong River basin, Loei River.

RMBH_biv_119_6. (16S: KX865683, 28S: KX865800, COI: KX865929, go to GenBank) ditto.

GenBank Vouchers Not Yet Georeferenced

NCSM_84935. (28S: KX822593, COI: KX822636, go to GenBank)

RMBH_biv_184_1. (28S: KX865804, COI: KX865933, go to GenBank)

RMBH_biv_184_3. (28S: KX865805, COI: KX865934, go to GenBank)

RMBH_biv_185_2. (28S: KX865806, COI: KX865935, go to GenBank)

MUSSELpdb

Taxonomy

Geography