O. Merkl szerk.: Folia Entomologica Hungarica 66. (Budapest, 2005)

and also to Central Europe. It is known from South France, Albania, Bulgaria, Ukraine (Crimea) and Turkey; the Eastern and Southeastern European data are mentioned as C. (Harpago) castaneovitreus LlNNAVOURI, 1951 ; however, this species is a junior synonym of C. (Harpago) medium (PÉRICART 2002). Considering its occurrence in Hungary, the distribution of this species might be wider than it has been thought previously. The species seems to be associated with streams, however, the type of stream does not seem to be important, but several conditions are necessary, e.g. the water must be clean, well oxygenated, the bank of the river must be formed by accumulated stones, pebbles, gravel and sand and must not be fully covered by vegetation (STYS 1990). According to STYS (1990), indiFig. 1. Aoploscelis bivirgata (COSTA, 1853) (del. J. PÁL)