The genus Dryops Olivier, 1791 has a worldwide distribution. In the Palaearctic region, it contains 34 species, from Tajikistan only one was recorded so far-Dryops rufipes Krynicki, 1832 (Olmi 1976, Kodada & Jäch 2006). During an expedition of last two authors to the Tajikistan in 2014 a series of new species was found, which is described in this paper.

New localities of Elmidae (Coleoptera: Byrrhoidea), with a revised checklist of species occurring in Poland Seventeen species of elmid beetles have been unequivocally recorded from Poland. The paper presents new data on the distribution of 13 species of this family, among which Esolus parallelepipedus and Riolus cupreus have been proved to occur in the country. Altogether 227 localities are given, either from the authors' own observations or from materials gathered during the implementation of the programme "Monitoring of the ecological state of surface waters, studies and an assessment of the ecological state of rivers" coordinated by the Chief Inspectorate for Environmental Protection in Poland. The paper also includes a revised checklist of Elmidae occurring in Poland.

Research on coprophagous beetles of the Hydrophilidae family in the Polish Carpathians was conducted from 2011 to 2013. The beetles were caught using baited traps. The research sites were selected to take into account both the horizontal diversity of habitat conditions and the vertical diversity associated with elevation above sea level. During the study, 9589 coprophagous hydrophilid individuals were collected, representing 17 species and five genera. Two species that were new to Poland were found: Cercyon tatricus and Pachysternum capense. The vertical ranges of the individual species of coprophagous hydrophilid beetles within the Polish Carpathians were determined as well as the elevations above sea level, with the highest and lowest species richness of this group of insects. The capture of Pachysternum capense in the Tatra Mountains may indicate the existence of an unrecognized path of migration of small insects from Southern to Northern Europe. The route and mechanisms of their migration are discussed.

Limnebius (s.str.) agnieszkae sp. n. from the Crimean Peninsula (Ukraine) is described. It is a member of the Limnebius furcatus subgroup of the L. parvulus species group. The new species is very similar to L. stagnalis Guillebeau, 1890, from which it can be distinguished by the aedeagus only. Information about its habitat and a list of other water beetles found together with the new species are provided. Limnebius myrmidon Rey, 1883 is recorded for the first time from the Ukraine.