1. L. Söderström (https://orcid.org/0000-0002-9315-4978), Dept of Biology, Norwegian Univ. of Science and Technology, Trondheim, Norway.
2. K. Hassel (https://orcid.org/0000-0002-1906-8166) ✉ ()
3. T. Prestø (https://orcid.org/0000-0003-3770-6296), NTNU Univ. Museum, Norwegian Univ. of Science and Technology, Trondheim, Norway.