The NHMO DNA Bank Arthropod collection at the Natural History Museum in Oslo (NHMO), Norway contains mainly tissue and extracted DNA samples of arthropods. Many of these have been taken from specimens in voucher collections either at NHMO or other museums, while others have been sampled from unvouchered specimens.The collection is databased in Corema, a software that has been developed in close cooperation between the NHMO and the developer, Compositae AS (https://www.coremadb.com/). An accession generally refers to a given individual at a specific place and time; for each accession, one or more items may exist.