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
Bivalvia | ... | Unionoidea | Unionidae | Gonideinae | Limnoscaphini | Contradentina | 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), Campbell & Lydeard (2026), Zieritz et al. (2026)
Range
Mekong Basin, Thailand, Cambodia, and Laos. (East Asia: AS5)
Map of Georeferenced Specimens
MUSSELp Specimen Records
3 Specimens from [blank]
9 Specimens from Cambodia
MNHN_MP_3780
Cambodge
MNHN_MP_3858
Cambodge
FMNH_21761
Cambodia
USNM_84061
Cambodia
ANSP_125658
Cambodia, Asia
UMMZ_110006
Cambodia, French Indo China
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
UF_507392
Tonle Sekong River, 1.6 miles upstream from AH11 Bridge. CA16-03. 13.54504, 106.01353
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
7 Specimens from Laos
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
MNHN_MP_3092
Laos
SMF_319231
Laos: Huai Nam Don NE Takek
SMF_220848
Laos: Mekong at Takek
SMF_319249
Laos: Mekong River between Takek and Nakon Panom
SMF_188840
Mekong at Takek, Laos
SMRL_2346_40
Mekong between Takek and Nakon Panom, Thailand
27 Specimens from Thailand
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
UF_507817
Bang Sai River at Rt. 2292 bridge. TH16-44. 16.737, 104.520
USNM_786277
Huai Mae Un at Sri Songkram, Nakon Prov. Thailand
SMF_319245
Huai Thuai, Tha Uthen, Nakon Panom
SMF_188836
Maenam Kham, Tat Panaom
SMF_188843
Maenam Songkram Sri Songkram
MNHN_MP_3839
Maenam Songram, Prov. Saicon Nakon, thailand
USNM_419864
Nong Han, Sakon Nakon, E. Siam
UF_507767
Songkhram River at bridge W of Ban Na Si Nuan on Rt. 2281. TH16-30. 17.729, 103.411
UF_507633
Songkhram River at confluence with Mao River. TH15-11. 17.70202, 104.25579
UF_507641
Songkhram River at confluence with Yam River. TH15-12. 17.70906, 104.07671
UF_381376
Thailand, Nakhon Phanom Province, muddy bank of Songkhram River, near town of Si Song Khram, 17.6252°, 104.2426°
SMF_188844
Thailand: Huai Mae Un at Sri Songkram, Province Nakon Panom
SMF_319232
Thailand: Huai Mae Un bei Sri Songkram
USNM_786290
Thailand: Huai Mae Un, Sri Songkram, Nakon Panom
SMF_205125
Thailand: Huai Un at Sri Songkram
USNM_786289
Thailand: Maenam Songkram
USNM_786280
Thailand: Maenam Songkram Wanonivat [= Wanon Niwat], Sakon Nakon
BMNH_MP_0607
Thailand: Maenam Songkram, N of Wannonivat, Sakon Nakon Prov.
USNM_786278
Thailand: Maenam Songkram, Ta Uthen, Nakon Panom Province
SMF_188837
Thailand: Nakon Panom Prov. MAenam Songkram, Ta Uthen
MNHN_MP_3850
Thailand: Songkram River at Wannonivat [= Wanon Niwat], Sakon Nakon Prov.
BMNH_MP_0609
Thailand: Songkram River at Wannonivat [= Wanon Niwat], Sakon Nakon Prov.
SMF_188839
Thailands: Maenam Songkram Wanonivat; Sakon Nakon
UF_507804
Thuai River at Rt. 212 bridge S of Tha Uthen. TH16-39. 17.562, 104.609
UF_507784
Un River at bridge approx. 3 km E of Ban Na Wha. TH16-32. 17.480, 104.129
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).
