Ladder trestle ( Saperda scalaris ), on cardboard load
|( Linnaeus , 1758)|
The beetles are 12 to 18 millimeters long. Their bodies are black and have a complex pattern of bright yellow to green hairy areas. There are seldom specimens with a light or grayish color. Especially the wings are more yellow-green in color, the head and pronotum more yellow. The colored areas form a strip along the wing cover seam from which a total of five "ladder rungs" branch off to the left and right. The yellowing may also be predominant, making it look like the beetle is wearing a black pattern. The legs are yellow-gray, the antennae are colored light gray, but at the end of each segment they are dark.
The animals are also found at higher altitudes throughout the Palearctic . They live in moist deciduous forests and on gravel fields and are mostly only found sporadically between April and June / July.
Way of life
The males usually sit in the treetops, less often they are found on flowers. The females are found on felled hardwood. The larvae develop in dead wood and diseased wood of many different hardwoods, such as B. in oak , beech , elm , birch , willow , hazelnut , etc. The females lay their eggs in a bitten groove. The larvae that hatch from it take two to three years to develop.
- Karl Wilhelm Harde, Frantisek Severa and Edwin Möhn: The Kosmos Käferführer: The Central European Beetles. Franckh-Kosmos Verlags-GmbH & Co KG, Stuttgart 2000, ISBN 3-440-06959-1 .
- Jiří Zahradník : Beetles of Central and Northwestern Europe. An identification book for biologists and nature lovers. Parey, Hamburg et al. 1985, ISBN 3-490-27118-1 .