Abstract
The geographical origin of the southern green stink bug Nezara viridula (Linnaeus, 1758) (Figs 1, 2) is still uncertain but it is believed to have originated in eastern Africa and/or Mediterranean (Hokkanen, 1986). During the last 250 years it has spread all over the world through human trade and agriculture. At present it occurs in the tropical and subtropical regions all around the world and it is still spreading to new areas. Specimens of populations from different continents do not differ morphologically. However, there is genetic differentiation among them, so the taxon N. viridula may contain unrecognized sibling species (Meglic et al., 2001). The occurrence of the species was expected in the southern part of Hungary (Halaszfy, 1959), since it is widely distributed and common in the Mediterranean region of Europe. Recently some specimens have been found in Hungary. List of localities: Budapest: Kobanya–Kispest, at railway station, 02. X. 2002, leg. Redei (1 ❹, ab. torquata (Fabricius, 1775)). – Szeged: Boszorkanysziget (bank of the river Tisza), 26. VI. 2000, leg. Bajko (1 ❹); Boszorkanysziget, 24. VI. 2002, leg. Torma (3 LV); Gyalai Holt-Tisza, 10. VII. 2001, leg. Kallai (1 ➁); in flat, 01. X. 2002, leg. Fulop (1 ❹); in flat, 13. X. 2002, leg. Fulop (1 ➁, ab. aurantiaca A. Costa, 1884). – Szeged–Kiskundorozsma: 18. VII. 2001, leg. Orosz (1 ➁). Most of the specimens which have so far been collected in Hungary, were found in the southern part of the country (Szeged and Szeged–Kiskundorozsma). The expansion of several Mediterranean Heteroptera species [e.g. Oxycarenus lavaterae (Fabricius, 1787), Arocatus longiceps (Stal, 1872)] has been observed in Hungary lately. Therefore, it is possible that N. viridula will spread to other parts of Hungary, too. A single specimen which probably spread through human transport, has already been found in Budapest at a railway station. Also some 5th instar nymphs have been found in Szeged. This indicates Acta Phytopathologica et Entomologica Hungarica 38 (3–4), pp. 365–367 (2003)
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