PeerJ Author 170 Points Contributions by role Author 100 Preprint Author 70 Contributions by subject area Animal Behavior Biophysics Entomology Zoology Ivan Andreevich Kerchev PeerJ Author Summary Past or current institution affiliations Tomsk State University PeerJ Contributions Articles 1 Preprints 1 January 2, 2020 Interspecific differences of stridulatory signals in three species of bark beetles from the genus Polygraphus Er. (Coleoptera: Curculionidae, Scolytinae) inhabiting the island of Sakhalin Ivan Andreevich Kerchev https://doi.org/10.7717/peerj.8281 PubMed 31915580 July 24, 2019 - Version: 2 Interspecific differences of stridulatory signals in three species of bark beetles from the genus Polygraphus Er. (Coleoptera: Curculionidae, Scolytinae) inhabiting the island of Sakhalin Ivan Andreevich Kerchev https://doi.org/10.7287/peerj.preprints.27697v2