Digging wasps fascinate with a highly complex behavioral system that is unique among insects. They exhibit intricate reproductive behaviors, various digging techniques for nest construction, different hunting methods, and forms of prey transport, nest sealing, defense against parasitoids, as well as orientation. This illustrated catalog provides nature enthusiasts with insight into the diversity of digging wasp species and serves as a helpful guide for identification in the field. The book offers: - a list of all 246 species currently known from Germany, as well as some additional ones from Austria and Switzerland - brilliant color photographs of 130 selected species, many of which are represented in both sexes - brief descriptions of characteristics, distribution, habitat, and lifestyle.