Borkhausenia crimnodes Meyrick, 1912, a species described from Argentina, has been found resident in Beira Litoral, Portugal, constituting its first records in Europe. Borkhausenia intumescens Meyrick, 1921, described from South Africa, is shown to be synonymous with B. crimnodes, described from Argentina. COI barcode sequencing has shown that a Portuguese specimen has 100% similarity with specimens collected in South Africa. The origin of the Portuguese population remains unclear but it is likely to be connected with timber importation for the paper industry. Male and female genitalia of B. crimnodes type and the Portuguese specimens are illustrated and described.