The Hymenoptera section houses about three million specimens and is the largest Hymenoptera collection in Germany. Specimens are stored in about 12,500 drawers. Standard size drawers are 41x52 cm wooden boxes with glass lid and a tight key and slot joint. Drawers are arranged in wooden cabinets that allow easy access to all parts of the collection. The collection hall is situated underground and fully air conditioned. It was built in 1985 according to modern curatorial requirements. The collection contains about 6,500 type specimens. Most of these are parasitoids (about 4,300 specimens, mainly Ichneumonidae), and there are about 1,250 type specimens of aculeate wasps and about 620 types of Symphyta.