It is just a kind of advance guard: Because only next year will the fully grown larvae of the significantly larger so-called southern strain in Baden dig themselves out of the soil, in which they have previously lived and developed as grubs. And then experts expect a mass swarm that should overshadow this year's extent of the coppice at Iffezheim. Strains in the south, in the middle, and in the north Within the regional occurrences, the so-called strains, most of the animals live according to the same rhythm. This way, they find partners in large numbers when they hatch. However, this timing does not exist supra-regionally. Cockchafers in southern, central, and northern Baden, in southern Hesse, Bavaria, or Saxony-Anhalt often hatch in different years. "The southern strain between Rastatt and Bruchsal is significantly larger, then there will be quite a bit going on," says Horst Delb from the Forest Research and Experimental Station (FVA) regarding the expectations for next year. ...