type specimen holotype Quaternary Holocene recent Western Canada and USA FEU-1023692
|  | identified by M. Hesemann Quaternary Holocene recent Pacific off Alaska Sitka FEU-1024359
|  | identified by M. Hesemann Quaternary Holocene recent Pacific off Alaska Sitka FEU-1024360
|  | identified by M. Hesemann Quaternary Holocene recent Pacific off Alaska Sitka FEU-1024390
|  | identified by M. Hesemann Quaternary Holocene recent Pacific off Alaska Sitka FEU-1024391
|  |