A new species of the genus Conosiphon Becker, 1923 and the first records of this genus for Europe (Diptera, Asilidae).

A new species of Conosiphon Becker, 1923, Conosiphonianus Álvarez Fidalgo & van den Broek, sp. nov., is described from Spain, representing the first record of this genus for Europe. It is illustrated in high-resolution photographs and the first ecological information is provided, as well as a key to all species tentatively placed in this genus.

Tolmerus calceatus (Meigen) confirmed as a valid species separate from Tolmerus atricapillus (Fallén) (Diptera: Asilidae).

The status of Tolmerus atricapillus calceatus (Meigen) is discussed. Based on morphological, ecological as well as genetic information it is concluded that Tolmerus calceatus stat. rev. should be treated as a valid species separate from T. atricapillus (Fallén). Characters to separate both are provided as well as a key to all Tolmerus species of northwestern Europe.