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Orthonevra stackelbergi Thompson et Torp, 1982 has been recorded in Poland for the first time in approximately 120 years. Distribution maps of O. stackelbergi and O. intermedia Lundbeck, 1916 in Poland are provided based on the new material, supplemented with records from literature, as well as notes about the species morphology, biology and ecology.
A rare mountain species Pipizella bispina SIMIC, 1987 (Diptera: Syrphidae) is reported for the first time in Poland. The specimen has been collected in Bystre near Baligrod, in the Bieszczady Mts.
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