At the locality Čebovce we found damage on Asimina triloba cv. Prima and Corylus avellana, which is not a typical host plant. 20% of branches on the host plant Asimina triloba cv. Prima were damaged by the Currant Clearwing moth larvae. The leaves on the infested branches started to wilt in mid-August.Keywords: Sesiidae; insect pests; fruit production; ČebovceThe Currant Clearwing moth Synanthedon tipuliformis (Clerck, 1759) is a serious pest of both red and black currant. It is widely dispersed in Eurasia, where it is considered the key pest on Ribes crops (Grassi et al. 2002). It is called "currant borer" and it is now a cosmopolitan species in temperate regions of the world where its host-plants have been introduced from Europe (Duckoworth & Eichlin 1974). It is autochthonous in West Palearctic region and from Europe it was introduced into many parts of the world. It occurs throughout Europe except Portugal and the Mediterranean Islands (Laštůvka & Laštůvka 2001). Currant Clearwing moth has been present also in New Zealand since at least 1868 (Fereday 1869). It spread also to China (Heilongjiang) and North America (Jin et al. 2008). Except currants, the Currant Clearwing moth larvae can damage gooseberry (Ribes uva-crispa L.) and the common spindle (Euonymus europaea L.) (Hluchý et al. 1997; Mazüraitis et al. 2006;Laštůvka 2010). It occurs both in lowlands and uplands (Laštůvka 2010). A higher risk of infestation is in currant plantations with low maintenance (Lánský et al. 2005), but also in maintained plantations with mechanically damaged plants, for example females of the Currant Clearwing moth are attracted by damaged (broken) shoots (Šefrová 2006).Feeding and tunnelling by larvae causes a depletion of the plant food reserves, weakening and breakage of shoots, shoot dieback, and uneven bud break in the damaged sections of canes (Grassi et al. 2002). The Currant Clearwing moth can cause serious damage in plantations, when its presence is underestimated and no pest control is carried out. The Currant Clearwing moth has only one generation annually. The moth flies from May to August. Females lay one egg on the bark of branch of the host plant. The caterpillar penetrates the stem via a wound or pruning scar and devours the pith. It develops slowly till autumn and overwinters in situ. Its development is completed in spring and pupation occurs inside the stem (Hluchý et al. 1997). Because nearly all the feeding is done within the stem, this borer cannot be reached with contact sprays. Cultural/mechanical control can be achieved by cutting out and burning or otherwise destroying infested canes before June 1 st every year, cutting the shoots as close to the ground as possible and crushing the canes to kill any larvae or pupae that may be inside (Grassi et al. 2002). Pest control is possible with the support of
154Vol. 51, 2015, No. 3: 153-155 Plant Protect. Sci. (Callaway 1993). Interest in wide promoting this species increased just after 1960 in the United States, Italy, China, and Chile. In these countries, ...