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Leuctra signifera Kempny, 1899 and Leuctra austriaca Aubert, 1954 are re-described and their taxonomical status is discussed. New country records are reported for L. austriaca from Hungary and L. signifera from Italy, Slovenia, and Hungary. A new species, Leuctra papukensis sp. n., from Croatia, is described and illustrated. The subspecies Leuctra signifera jahorinensis Kaćanski, 1972 is raised to species level.
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Reding et al. (2023) studied this question.
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