First Report of the Ash Sawfly, Tomostethus nigritus, Established on Fraxinus excelsior in the Republic of Ireland

Insects. 2021 Dec 21;13(1):6. doi: 10.3390/insects13010006.

Abstract

This is the first report of the ash sawfly, Tomostethus nigritus, in the Republic of Ireland. We observed defoliated leaves of Fraxinus excelsior L. and T. nigritus larvae at a forestry plantation in Co. Kildare. Morphological observation of the larvae and DNA analysis using mitochondrial COI barcoding confirmed the identification of this pest of ash.

Keywords: Fraxinus spp.; Republic of Ireland; Tomostethus nigritus; ash sawflies.