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Kucinic M.,University of Zagreb | Koren T.,University of Primorska | Mihoci I.,Croatian Natural History Museum | Vukovic M.,Croatian Natural History Museum | And 3 more authors.
Periodicum Biologorum | Year: 2013

Background and Purpose: The Geranium Bronze Cacyreusmarshalli (Butler, 1898) is the only butterfly introduced (non-native) into the European fauna. It was introduced in 1988 on the Balearic Islands fromwhere it spread across Europe. Materials andMethods:Cacyreusmarshalli observationswere conducted during the day at all locations. At a number of localities, geraniums as larval host plants were inspected to determine the presence of C. marshalli caterpillars. Results and Conclusions: In Croatia, C.marshalli first appeared on the island of Lošinj. The paper presents new distribution data for the Geranium Bronze and its expansion across Croatia (all in theMediterranean area) and discusses possibilities of spread due to climate change. Further systematic monitoring of spreading of C. marshalli in Croatia is necessary for it to be assigned to changing climate and above average temperatures in the last years, in particular since 2000.

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