Species
Boreus westwoodi
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| Total records | 20 ( ) |
| Total species | 1 |
| Records in Estonia | 17 ( ) |
| Species in Estonia | 1 |
| First occurrence in Estonia | 1993-10-31 |
| Latest occurrence in Estonia | 2026-01-02 |
| First occurrence in Estonia this year | 2026-01-02 |
Accepted name
Boreus westwoodiCommon names
firkantsnønebbflue Norwegian Bokmål,
firkantsnønebbfluge Norwegian Nynorsk