Sampling sites, host plants, larvae, teneral and mature adults. 40 - sampling site of Strophosoma capitatum in a beech forest in the Deister Mountains southwest of Hannover, 41 - adult S. capitatum feeding on Salix caprea in a pine forest on the outskirts of Celle (Niedersachsen), 42 - habitat of S. melanogrammum near Ilsenburg (Sachsen-Anhalt) in the National Park Harz, a broken down spruce plantation, now containing a pioneer forest with young birch trees, 43 - mature larva and fresh adult of S. sus from breeding, 44 - searching site for immature stages of S. sus between the roots of Calluna vulgaris in the southern part of the Lower Saxonian heathland near Berkhof, 45 - mature larvae of S. melanogrammum found between the roots of Cytisus scoparius near Brelingen in the north of Hannover.