The dataset is based on an individual registration database of pinned, dry specimens, microscope slides or wet collection specimens. One record is usually but not always equivalent to one specimen. Some records are multiple specimens on the same pin with the same collecting information or multiple specimens in a vial with ethanol or on a slide, coming from one collecting event. The dataset contains close to 300 000 specimens, of which 83 % originate from Sweden. It is not representative of our collection as the data were gathered based on special project needs.