Table 1 Sampling information of specimens used in the present study

POMATIOPSIDAE

Pomatiopsinae

Blanfordia bensoni (Adams, 1861)

Inland forests; terrestrial

Nigorikawa, Mori, Hokkaido

AB611708*

AB611709*

AB611710*

AB611711*

Futoro, Setana, Hokkaido

AB611712*

AB611713*

AB611714*

AB611715*

Blanfordia integra Pilsbry, 1924

Inland forests; terrestrial, often arboreal

Mt. Mikuni, Shizuoka

AB611716*

AB611717*

AB611718*

AB611719*

Nou, Itoigawa, Niigata

AB611720*

AB611721*

AB611722*

AB611723*

Blanfordia japonica (Adams, 1861)

Coastal to inland forests; terrestrial

Sado, Niigata¹

AB611724*

AB611725*

AB611726*

AB611727*

Blanfordia simplex Pilsbry, 1902

Coastal dunes and littoral forests; terrestrial

Yunohama, Tsuruoka, Yamagata¹

AB611728*

AB611729*

AB611730*

AB611731*

Ayukawa, Fukui, Fukui

AB611732*

AB611733*

AB611734*

AB611735*

Blanfordia sp.

Inland forests; terrestrial

Samani, Hokkaido

AB611736*

AB611737*

AB611738*

AB611739*

Cecina manchurica Adams, 1861

Littoral

Nanao, Ishikawa

AB611740*

AB611741*

AB611742*

AB611743*

Betsukai, Hokkaido

AB611744*

AB611745*

AB611746*

AB611747*

Fukuia kurodai kurodai Abbott & Hunter, 1949

Mountain streamlets; amphibious, often arboreal

Ohyana, Yurihonjo, Akita

AB611748*

AB611749*

AB611750*

AB611751*

Atsumi, Tsuruoka, Yamagata

AB611752*

AB611753*

AB611754*

AB611755*

Kitamata, Sakata, Yamagata

AB611756*

AB611757*

AB611758*

AB611759*

Shimouchinami, Ohno, Fukui

AB611760*

AB611761*

AB611762*

AB611763*

Takeda, Maruoka, Sakai, Fukui¹

AB611764*

AB611765*

AB611766*

AB611767*

Fukuia kurodai niigataensis Minato, 1973

Mountain streamlets; amphibious, often arboreal

Oyachi, Itoigawa, Niigata

AB611768*

AB611769*

AB611770*

AB611771*

Ikazuchi, Murakami, Niigata

AB611772*

AB611773*

AB611774*

AB611775*

Fukuia multistriata Abbott & Hunter, 1949

Mountain streamlets; amphibious, often arboreal

Umeura, Echizen, Fukui

AB611776*

AB611777*

AB611778*

AB611779*

Fukuia ooyagii Minato, 1982

Mountain streamlets; aquatic

Iwaya, Mutsu, Aomori¹

AB611780*

AB611781*

AB611782*

AB611783*

Oncomelania hupensis nosophora (Robson, 1915)

Lakes/marshy ground; seasonally amphibious

Nirasaki, Yamanashi

AB611784*

AB611785*

AB611786*

AB611787*

Oncomelania hupensis quadrasi (Möllendorff, 1895)

Lakes/marshy ground; seasonally amphibious

Genbank

-

-

DQ212862

DQ112287

Oncomelania hupensis robertsoni Bartsch, 1946

Lakes/marshy ground; seasonally amphibious

Genbank

AF212906

AY207042

AF212893

AF213339

Oncomelania minima (Bartsch, 1936)

Mountain streamlets; aquatic

Wajima, Ishikawa

AB611788*

AB611789*

AB611790*

AB611791*

Sado, Niigata

AB611792*

AB611793*

AB611794*

AB611795*

Pomatiopsis lapidaria (Say, 1817)

Marshy ground; amphibious

Genbank

AF367666

-

AY676118

AF367636

Triculinae

Gammatricula fujianensis (Liu, Zhang & Wang, 1983)

Aquatic

Genbank

AF212909

-

AF212896

AF213342

Gammatricula shini (Habe, 1961)

Aquatic

Yonaguni Isl., Okinawa

AB611796*

AB611797*

AB611798*

AB611799*

Gammatricula songi Davis, Chen & Yu, 1994

Aquatic

Genbank

-

EF394879

EF394867

EF394902

Lacunopsis sp.

Aquatic

Genbank

AF212910

-

AF212897

AF213343

Neotricula aperta (Temcharoen, 1971)

Aquatic

Genbank

AF531540

AY207034

AF531556

AF531541

Neotricula burchi (Davis, 1968)

Aquatic

Genbank

AF531543

AY207035

AF531542

AF531544

Robertsiella sp.

Aquatic

Genbank

AF531549

-

AF531548

AF531550

Tricula bollingi Davis, 1968

Aquatic

Genbank

AF531552

AY207039

AF531551

AF531553

Tricula fujianensis (Liu, et al., 1983)

Aquatic

Genbank

-

EF394885

EF394873

EF394893

Tricula hongshanensis Tang et al., 1986

Aquatic

Genbank

-

EF394888

EF394876

EF394896

Tricula hortensis Attwood et al., 2003

Aquatic

Genbank

-

EF394883

EF394871

EF394900

Tricula hsiangi Kang, 1984

Aquatic

Genbank

-

EF394889

EF394877

EF394897

Tricula pingi Kang, 1984

Aquatic

Genbank

-

EF394881

EF394869

EF394901

Tricula wumingensis Hu et al., 1994

Aquatic

Genbank

-

EF394884

EF394872

EF394892

ASSIMINEIDAE

Angustassiminea satumana Habe, 1942

Kikai Isl., Kagoshima

AB611800*

AB611801*

AB611802*

AB611803*

Assiminea hiradoensis Habe, 1942

Urakami, Nagasaki, Nagasaki

AB611804*

AB611805*

AB611806*

AB611807*

Paludinellassiminea japonica (Pilsbry, 1901)

Hiburi Isl., Uwajima, Ehime

AB611808*

AB611809*

AB611810*

AB611811*

Pseudomphala miyazakii (Habe, 1943)

Ashikari, Ogi, Saga

AB611812*

AB611813*

AB611814*

AB611815*

TRUNCATELLIDAE

Truncatella pfeifferi Martens, 1860

Nanao, Ishikawa

AB611816*

AB611817*

AB611818*

AB611819*

AMNICOLIDAE

Akiyoshia kobayashii Kuroda & Habe, 1958

Taga, Shiga

AB611820*

AB611821*

AB611822*

AB611823*

LITTORINIDAE

Echininus cumingi spinulosus (Philippi, 1846)

Kikai Isl., Kagoshima

AB611824*

AB611825*

AB611826*

AB611827*

Littorina pallescens (Philippi, 1846)

Nago, Okinawa

AB611828*

AB611829*

AB611830*

AB611831*