Winnertzia discretella Spungis 1992

Winnertzia discretella Spungis, 1992 agg. Morphological identification Jaschhof & Jaschhof (2013, 2020b). Jaschhof & Jaschhof (2020b), who studied a large material of this species from Sweden, referred to W. discretella as a morphologically unusually variable species. Contrary to this, the integrative study here led to the identification of 11 discretella -like species, each with distinct morphology and a discrete BIN. This renders the identity of the genuine W. discretella, a species described by Spungis (1992) from Latvia, an open question. No attempt was made here to resolve this issue and whether some or all of the discretella -like morphotypes found in Germany do occur in Sweden as well. Pending further research into this complex taxonomic problem, W. discretella is referred to as an unresolved species aggregate. The 11 discretella -like species found in Germany, including their DNA barcodes, are as follows: W. sp. MJDE9 (BIN BOLD:ADL7110), W. sp. MJDE40 (BIN BOLD:ADT1919), W. sp. MJDE41 (BIN BOLD:AER2294), W. sp. MJDE42 (BIN BOLD:AER2266), W. sp.MJDE43 (BIN BOLD:ACA9674), W. sp. MJDE44 (BIN BOLD:ACG8109), W. sp. MJDE51 (BIN BOLD:AER2253), W. sp. MJDE52 (BIN BOLD:AEX6572), W. sp. MJDE53 (BIN BOLD:AEX3123), W. sp. MJDE54 (BIN BOLD:AEY5112), and W. sp. MJDE55 (BIN BOLD:AEZ4619). Distribution Germany (new record); Sweden, Latvia, European and Far Eastern parts of Russia, South Korea (Gagné & Jaschhof 2021).