Key to genera and species of Tanyderidae from Baltic amber

1. Wing venation with very elongate vein R2+3 about three and half times longer than R2................................................................................................... Podemacrochile baltica (Podenas, 1997)

- Vein R2+3 not very elongate, about half of R2 length.................................... Macrochile Loew, 1850 (2)

2. Gonostylus elongate, curved in the middle part, with big protuberance provided with strong, short bristles at the inner part.................................................................................. Macrochile hornei sp. nov.

- Gonostylus rather short and wide at the base, without big protuberance, without strong, short bristles at the inner part................................................................................. Macrochile spectrum Loew, 1850