research projects include - Systematics and taxonomy of Hydroporinae subfamily, Systematics of moths, Taxonomy and biogeography of holarctic moths, Biogeography of the Pacific Ocean, Research on the history of evolution, Systematics and taxonomy of geometrid moths, Lists of the insect types in the Zoological Museum - Ephemeroptera, Newcomer insects in Iceland, Systematics and taxonomy of the hoverflies (Diptera, Syrphidae) and related groups, The butterflies of the Canary Islands, Taxonomy and phylogeny of Sciaridae (Diptera)