#3
1 Maybe Ptinidae
2 Pselaphidae*
Similar spp. pictured on http://www.zin.ru/animalia/coleoptera/rus/makarfam.htm in Russian.
I am sure they will want to see your excellent pics

* Pselaphidae in most books but Pselaphinae is now a subfamily . The group was originally regarded as a separate family, named Pselaphidae. Newton and Thayer (1995) placed them in the Omaliine group of the family Staphylinidae, based on shared morphological characters. (Wikipedia)
Robert
#4
Thanks, Robert!

1. Euconnus (s.str.) hirticollis (Illiger), Scydmaenidae.
2. Rybaxis longicornis (Leach), Pselaphidae
Kurbatov S. det.