engleski

First records of crape myrtle aphid Sarucallis kahawaluokalani (Kirkaldy 1906) and tulip-tree aphid Illinoia liriodendri (Monell 1879) in Croatia

Crape myrtle aphid (Sarucallis kahawaluokalani) and tulip-tree aphid (Illinoia liriodendri) are new insect species in Croatia. Crape myrtle aphid originates from Southeast Asia but has spread throughout the world. It feeds on ornamental plants from Lagerstroemia and Lawsonia genera. It causes damage on ornamentals via excretion of honeydew accompanied by sooty mould that decreases ornamental value of the plants. The aphid is recognizable by black markings on the body and wings of an adult aphid and black tubercles on the back. Crape myrtle aphid was first recorded in Croatia in July 2014 on Lagerstroemia indica (L.) on the island of Krk. Later investigation showed that it has spread throughout the entire Croatian coast and has since been found in Poreč, Rovinj, Šibenik and Dubrovnik. Tulip-tree aphid is a Nearctic species that originates from North America. It is monoecious holocyclic species that feeds on Liriodendron tulipifera (L.). It has been spreading across Europe and Asia with its ornamental host plants and has so far been introduced in the UK, France, Germany, Luxembourg, Italy, Slovenia, Hungary and Greece. The aphid excretes considerable quantities of honeydew accompanied by sooty mould but heavy infestation can cause premature leaves’ discoloration and defoliation. Tulip-tree aphid was first recorded in Croatia in August 2014 in Poreč. No further investigation of this aphid was carried out so its real distribution in Croatia is still unknown. Since both species are alien to Europe, further investigations are needed in order to establish their current distribution, possibilities of spread and possibilities of their domestication in Croatian climate.

first record, Sarucallis kahawaluokalani, Illinoia liriodendri, Croatia

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