Zig-zagging across Central Europe: recent range extension, dispersal speed and larval hosts of Aproceros leucopoda (Hymenoptera, Argidae) in Germany

By

Blank, Stephan M., 1966-
Köhler, Thomas
Pfannenstill, Toralf
Neuenfeldt, Nadine
Zimmer, Bianka
Jansen, Ewald
Taeger, Andreas
Liston, Andrew, 1978-

Type

Article

Date of Publication

2014

Original Publication

Journal of Hymenoptera research

Volume

41

Pages

57-74

Subjects

Aproceros leucopoda , Argidae , distribution in Germany , human-mediated jump dispersal , invasive species , pest species , self-dispersal , Ulmus laevis , Ulmus Resista® hybrids , zig-zag sawfly

Contributed by

Pensoft Publishers

Language

English

Published by

Washington, D.C International Society of Hymenopterists

Identifiers

DOI: https://doi.org/10.3897/JHR.41.8681

 

Abstract

Aproceros leucopoda, the zig-zag sawfly, an invasive pest of elms (Ulmus spp.), was found in two separate areas of Germany through July 2014, i.e., a northern area including the states of Berlin, Brandenburg, Mecklenburg-West Pomerania, Saxony and Saxony-Anhalt, and a southern area in Bavaria. A speed of self-dispersal of 45–90 km/yr has been calculated from earlier and present records. Observations of A. leucopoda in Belgium and the Netherlands during 2013, which are 360–610 km distant from records in Germany of that year, are interpreted as resulting from human-mediated jump dispersal. Larvae, feeding traces and cocoons were frequently found on the native elm species U. minor and U. glabra, whereas none could be detected on U. laevis. Other occurrences were often on Resista® elms, causing severe defoliation in a recent planting. New host plant records for A. leucopoda are: U. minor ‘Webbiana’, U. minor var. suberosa, and the Resista® cultivars U. ‘New Horizon’, U. ‘Regal’ and U. ‘Rebona’. The future dispersal of A. leucopoda throughout most of Germany is expected, because at least U. glabra and U. minor are widespread in this country.