The reappearance of Pseudoclavellaria amerinae (Linnaeus, 1758) in Germany (Hymenoptera, Cimbicidae).

Abstract

The sawfly Pseudoclavellaria amerinae was last found in Germany in 1976 and was treated as extinct in the latest national list of endangered species. Two recent occurrences in Saxony-Anhalt, Germany, are reported, and discussed in the context of older distributional data. Most records of P. amerinae in central Europe are from alluvial forest along lowland stretches of major rivers and their tributaries. In eastern Germany, historic and current occurrence is concentrated on the Elbe river system. Data on the larval host plants are reviewed: these are primarily smooth-leaved Salix species (particularly S. fragilis and S. alba), with Populus species as important secondary hosts.

Keywords

sawfly, distribution, Europe, Elbe, host plants, floodplain forest.