Opusc. Zool. Budapest, 2018, 49(1): 33–70 Unified phylogenetic species concept: taking subspecies and race out of science: postmodern theory applied to the Potamophylax cingulatus group (Trichoptera, Limnephilidae) 1 2 3 4 5 6 7 J. OLÁH , T. ANDERSEN , S. BESHKOV , C. CIUBUC , G. COPPA , H. IBRAHIMI , T. KOVÁCS , 8 9 J. OLÁH JR. & B. SZCZESNY 1János Oláh, Residence postal address: Tarján u. 28, H-4032 Debrecen, Hungary. E-mail:
[email protected] 2Trond Andersen, Department of Natural History, University Museum of Bergen, University of Bergen, P.O. Box 7800, N-5020 Bergen, Norway. E-mail:
[email protected] 3Stoyan Beshkov, National Museum of Natural History, 1 Tsar Osvoboditel Blvd. 1000 Sofia, Bulgaria. E-mail:
[email protected] 4Constantin Ciubuc, Sinaia Zoological Research Station, University of Bucharest, Cumpatu 5, Sinaia, R-106100, Romania. E-mail:
[email protected] 5Gennaro Coppa, 1, rue du Courlis, F-08350 Villers-sur-Bar, France. E-mail:
[email protected] 6Halil Ibrahimi, University of Prishtina, Faculty of Mathematics and Natural Sciences, Department of Biology, Mother Teresa p.n., 10000 Prishtina, Kosovo. E-mail:
[email protected] 7Tibor Kovács, HNHM Mátra Museum, Kossuth Lajos u. 40, H-3200 Gyöngyös, Hungar.
[email protected] 8János Oláh jr., Residence postal address: Tarján u. 6, H-4032 Debrecen, Hungary. E-mail:
[email protected] 9Bronislaw Szczesny, Institute of Nature Conservation, Polish Academy of Sciences, Kraków, Poland. E-mail:
[email protected] Abstract. The subspecies of the biological species concept with incomplete reproductive isolation versus the incipient sibling species of the phylogenetic species concept with permeable reproductive barrier are still applied side by side in the everyday practice of taxonomy.