Abstract

Danaus chrysippus, a species associated in the region with low migrant numbers, has appeared at a small biotope in Cyprus in each of the five years, 2014–2018. We present the results of monitoring at the site and suggest that detection of plant volatiles, perhaps in combination with the presence of male pheromones, assist migrating D. chrysippus to detect small stands of the host-plant Cynanchum acutum, enabling the establishment of temporary populations on the island. We also refer to the recent appearance in Cyprus of D. c. chrysippus f. 'alcippus'.

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