[1][2] Local branches of the society are located in the largest Norwegian cities, and they organize excursions to particularly interesting sites and guides who offer advice on identifying species and preparing collected material.
In the process, he received a letter from Leif Reinhardt Natvig, stating: "Through Dr. Økland I have been informed that you would like to become a member of the Norwegian Entomological Society.
Later Semb-Johansson received a second letter: "I have the honor to inform you that you have been admitted as a member of the Norwegian Entomological Society.
"[5][6] In order to be able to survey the prevalence of Norwegian insects, a simple geographical system for locating sightings was needed.
In 1924, Thomas Georg Münster and others created a system that divided Norway into bio-geographical sectional areas for botanists and zoologists using number codes.
In May 2008, the Norwegian Species Observation System (Artsobservasjoner) was launched;[10] this is an internet-based service where sightings can be published.
The first publications by Norwegian entomologists appeared in the Swedish Entomologisk Tidskrift (Entomological Journal), which was not unexpected because Norway was in a union with Sweden.
This situation was not satisfactory, and the first issue of Norsk Entomologisk Tidsskrift (now Norwegian Journal of Entomology) appeared in May 1921.