The invasive seed beetle Megabruchidius tonkineus (Pic, 1904) is an agricultural pest native to the east Asian region that was first recorded in Europe (Germany) in the 1980s. There are further recent reports of this species from Bulgaria, France, Hungary, Russia, Serbia and Switzerland. Megabruchidius tonkineus resides in the seed pods of gleditsia triacanthos L. (Fabaceae) and is recorded for the first time in Croatia in our study. The general morphological, biological and distributional features of this invasive species are given. Invazivna vrsta sjemenarki porijeklom iz orijentalne Azije Megabruchidius tonkineus (pic, 1904), nađena je po prvi puta u Hrvatskoj u mahunama gledičije (gleditsia triachantos L.). Prvi nalaz ove vrste u Europi zabilježen je 80-ih godina prošloga stoljeća u Njemačkoj, međutim odnedavno postoje dokazi da se ta vrsta ustalila u Bugarskoj, Francuskoj, Mađarskoj, Srbiji i Švicarskoj. U radu su prikazana osnovna morfološka i biološka obilježja vrste kao i njezina rasprostranjenostna području Istočne Hrvatske.
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