Pollet, M., Persson, M., Bøggild, E. and Crossley, R. 2015. A long-lasting taxonomic problem in European Sympycnus resolved, with the description of a new species and data on habitat preferences. Zootaxa. 4032, 1 (Oct. 2015), 81–102. DOI:https://doi.org/10.11646/zootaxa.4032.1.4.