Drosophila suzukii (Matsumura; Diptera: Drosophilidae) is a key pest of sweet cherry and small fruits worldwide. Biological control remains unutilized in the framework of D. suzukii management. Nonetheless, natural enemies may play an important role in regulating this pest. We report for the first time the presence of Leptopilina japonica Novković and Kimura (Hymenoptera: Figitidae) in Europe. Two specimens emerged from ripened fruits and one was collected after direct observation on a cherry tree in June 2019. They showed the distinctive morphological traits already described and shared more than 99% sequence similarity with specimens of L. japonica collected in Asia. This first finding was confirmed by a wider survey carried out in 2020; L. japonica emerged from cherry fruit samples collected in five other sites across the Trentino region, suggesting that L. japonica has already colonized a wide area. Detection of this Asian species is relevant to the future direction in managing D. suzukii, both in Europe and North America. In fact, L. japonica showed similarity with Ganaspis brasiliensis (Ihering) (Hymenoptera: Figitidae), the most promising candidate for the classical biological control, in terms of developmental time, egg maturation, host age preference and lifetime fecundity

Puppato, S.; Grassi, A.; Pedrazzoli, F.; De Cristofaro, A.; Ioriatti, C. (2020). First report of Leptopilina japonica in Europe. INSECTS, 11 (9): 611. doi: 10.3390/insects11090611 handle: http://hdl.handle.net/10449/64846

First report of Leptopilina japonica in Europe

Puppato, S.;Grassi, A.;Pedrazzoli, F.;Ioriatti, C.
2020-01-01

Abstract

Drosophila suzukii (Matsumura; Diptera: Drosophilidae) is a key pest of sweet cherry and small fruits worldwide. Biological control remains unutilized in the framework of D. suzukii management. Nonetheless, natural enemies may play an important role in regulating this pest. We report for the first time the presence of Leptopilina japonica Novković and Kimura (Hymenoptera: Figitidae) in Europe. Two specimens emerged from ripened fruits and one was collected after direct observation on a cherry tree in June 2019. They showed the distinctive morphological traits already described and shared more than 99% sequence similarity with specimens of L. japonica collected in Asia. This first finding was confirmed by a wider survey carried out in 2020; L. japonica emerged from cherry fruit samples collected in five other sites across the Trentino region, suggesting that L. japonica has already colonized a wide area. Detection of this Asian species is relevant to the future direction in managing D. suzukii, both in Europe and North America. In fact, L. japonica showed similarity with Ganaspis brasiliensis (Ihering) (Hymenoptera: Figitidae), the most promising candidate for the classical biological control, in terms of developmental time, egg maturation, host age preference and lifetime fecundity
Figitidae
Biological control
Larval parasitoid
Cherry
Drosophila suzukii
Settore AGR/11 - ENTOMOLOGIA GENERALE E APPLICATA
2020
Puppato, S.; Grassi, A.; Pedrazzoli, F.; De Cristofaro, A.; Ioriatti, C. (2020). First report of Leptopilina japonica in Europe. INSECTS, 11 (9): 611. doi: 10.3390/insects11090611 handle: http://hdl.handle.net/10449/64846
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