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Keywords:

  • Asian introduced wasp;
  • Balkans;
  • Sceliphron curvatum;
  • Sceliphron deforme

Abstract

We report the further south-eastward range extension of the invasive Asian mud-daubing wasp, Sceliphron curvatum (Smith), initially introduced into Austria in the late 1970s. We document its presence in the central Balkan Peninsula from 1997 onwards, and we discuss the circumstances and course of its recent expansion in the area. We also report the first finding of another Asian species, Sceliphron deforme (Smith), in Europe, and we consider various aspects of this case, given the possibility that the record from southern Montenegro represents a successful introduction.