The monotypie Australian planthopper Busas Jacobi, 1909 with type species Busas dissolutus Jacobi, 1909 is redecribed. The taxonomical placement of Busas (in Gaetullini) and generic status of Busas and Paralasonia as valid taxa are confirmed. Paralasonia australis Muir, 1924 is recorded for the first time from New South Wales in Australia.
New localities of Leptura thoracica Creutz. in Białowieża Primeval Forest and Puszcza Borecka forest (NE Poland) with some other data on its geographic distribution, morphology, biology and taxonomie position are given. A key for determination of 6 species of Leptura L., which are likely to be found in Central Europe, is also provided.
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