 Xenophagus simidniki spn, a new species of beetle, was discovered in a late Iacin amber deposit from Ravna, Ukraine. It is closely related to two other extinct species, Xenophagus popovii and Xeno-Hematium lobarskii, both found in Baltic amber. These three species are part of a larger group of beetles known as Xenosilinii, which are most closely related to the modern Mediterranean Xenosilus and the boreal genus Sivalgius. The Ravna amber fauna is one of the richest fossil insect assemblages ever discovered, containing over 350 different species. The abundance of these beetles in the amber suggests they were widespread across Europe during this time period. The authors suggest that the high diversity of these beetles may have been due to their ability to adapt quickly to changing environments. This article was authored by Georgiy Lubarskiy, Yevgeny Iprokovsky and Dmitry V. Vasylenko.