| armenia | | westerdykella dispersa | species | 2 | 0 |
| brazil | | westerdykella sp. | species | 3 | 0 |
| brazil | minas gerais | westerdykella reniformis | species | 1 | 0 |
| brazil | para | westerdykella dispersa | species | 2 | 0 |
| cambodia | | westerdykella dispersa | species | 1 | 0 |
| canada | | westerdykella reniformis | species | 6 | 0 |
| chad | | westerdykella dispersa | species | 1 | 0 |
| chile | | westerdykella sp. ge-2013 | species | 5 | 0 |
| china | | westerdykella sp. | species | 2 | 0 |
| china | guangdong | westerdykella purpurea | species | 1 | 0 |
| china | hebei | westerdykella dispersa | species | 2 | 0 |
| china | inner mongolia | westerdykella dispersa | species | 1 | 0 |
| china | jiangsu | westerdykella dispersa | species | 2 | 0 |
| china | xinjiang | westerdykella sp. | species | 1 | 0 |
| colombia | | westerdykella dispersa | species | 1 | 0 |
| croatia | | westerdykella purpurea | species | 1 | 0 |
| egypt | | westerdykella sp. | species | 1 | 0 |
| france | | westerdykella centenaria | species | 6 | 0 |
| france | | westerdykella multispora | species | 3 | 0 |
| india | | westerdykella angulata | species | 7 | 0 |
| india | | westerdykella aurantiaca | species | 1 | 0 |
| india | | westerdykella dispersa | species | 6 | 0 |
| india | | westerdykella globosa | species | 2 | 0 |
| india | | westerdykella sp. | species | 3 | 0 |
| india | uttar pradesh | westerdykella sp. kjvar | species | 1 | 0 |
| italy | liguria region | westerdykella dispersa | species | 1 | 0 |
| italy | piemonte region | westerdykella multispora | species | 1 | 0 |
| japan | | westerdykella multispora | species | 1 | 0 |
| kenya | | westerdykella cylindrica | species | 1 | 0 |
| kuwait | | westerdykella centenaria | species | 1 | 0 |
| lithuania | | westerdykella dispersa | species | 1 | 0 |
| lithuania | | westerdykella multispora | species | 1 | 0 |
| mexico | | westerdykella sp. | species | 2 | 0 |
| mozambique | | westerdykella ornata | species | 2 | 0 |
| namibia | | westerdykella sp. | species | 3 | 0 |
| oman | | westerdykella sp. squ-kh27 | species | 1 | 0 |
| oman | | westerdykella sp. squ-kh28 | species | 1 | 0 |
| oman | | westerdykella sp. squ-kh29 | species | 1 | 0 |
| oman | | westerdykella sp. squ-kh30 | species | 1 | 0 |
| oman | | westerdykella sp. squ-kh31 | species | 1 | 0 |
| oman | | westerdykella sp. squ-qu21 | species | 1 | 0 |
| romania | | westerdykella dispersa | species | 1 | 0 |
| south africa | | westerdykella reniformis | species | 1 | 0 |
| south korea | | westerdykella purpurea | species | 2 | 0 |
| south korea | | westerdykella reniformis | species | 2 | 0 |
| south korea | | westerdykella sp. | species | 3 | 0 |
| sri lanka | | westerdykella purpurea | species | 1 | 0 |
| thailand | phitsanulok province | westerdykella purpurea | species | 2 | 0 |
| trinidad and tobago | | westerdykella sp. | species | 1 | 0 |
| united states | | westerdykella cylindrica | species | 1 | 0 |
| united states | | westerdykella dispersa | species | 7 | 0 |
| united states | | westerdykella purpurea | species | 3 | 0 |
| united states | california | westerdykella sp. | species | 3 | 0 |
| united states | virginia | westerdykella dispersa | species | 1 | 0 |
| united states | wisconsin | westerdykella dispersa | species | 1 | 0 |