Revision of the Melanogaster jaroslavensis group (Diptera: Syrphidae), with description of a new species from Afghanistan.

Within the genus Melanogaster Rondani, 1857, the group of species characterized by their yellow wing base was named as M. jaroslavensis group and revised for the first time. Redescriptions of M.

New data on the genus Wiedemannia Zetterstedt (Diptera: Empididae) from the Caucasus with description of four new species.

Currently, 17 species of aquatic dance flies of the genus Wiedemannia are known from the Caucasus including four new species: W. ivkovicae sp. nov.

New data on the genus Platypalpus (Diptera: Hybotidae) from the Caucasus with description of seven new species.

Currently, 47 species of the genus Platypalpus are known from the Caucasus including fourteen species recorded herein for the first time: P. albicornis (Zetterstedt, 1842), P. baldensis (Strobl, 1899), P.

New data on the genus Hybos Meigen (Diptera: Hybotidae) from the Palaearctic Region.

The taxonomy and distribution of the genus Hybos Meigen in the Palaearctic Region is reviewed with a special reference to the European fauna. Twenty-three species have been recorded from the Palaearctic, of which only four species are known from Europe. We describe two new species, H.

Six new species of the Platypalpus pallidiventris-cursitans group (Diptera: Hybotidae) from the Caucasus.

Six new species of the genus Platypalpus are described from the Caucasus: P. abagoensis sp. nov.

Two new species of the Empis subgenus Lissempis (Diptera: Empididae) from the Caucasus.

Two new species of the genus Empis subgenus Lissempis Bezzi, 1909 are described from the Caucasus: Empis (Lissempis) azishtauensis sp. nov. (Russia: Adygea, Krasnodar Territory) and E.