The sequence diversity in the mitochondrial cytochrome-c oxidase I (COI) gene was evaluated as a tool for resolving differences among species of European adelgids collected from several localities across the Czech Republic. Members of 7 genera and 16 species were examined, and as outgroups, two species of Phylloxeridae were used. Sequence divergences within species were on average less than 0.15%, whereas divergences between species ranged from 0.0 to 4.12% for congeneric and to 13.24% for intergeneric comparisons. It is concluded that DNA barcoding of Adelgidae is a powerful tool for identifying genera, but at the species level it works only in those cases where there are no species complexes. Nevertheless, it can be used as a complement to traditional, morphological taxonomy.
This article examines the correspondence between the Austrian author Hermann Bahr and the Czech dramaturge, author and politician Jaroslav Kvapil. It focuses on the years during World War I and the increasingly divergent interests of these two figures. While Bahr is concerned with renewing Austria, Kvapil is engaged in nation building in the newly forming Czechoslovakia. and Článek zahrnuje odkazy pod čarou