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Insects 2019, 10(2), 44; https://doi.org/10.3390/insects10020044

Investigations on the Grape Leafhopper Erasmoneura vulnerata in North-Eastern Italy

Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell’Università 16, Agripolis, Legnaro, 35020 Padova, Italy
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Received: 19 November 2018 / Revised: 27 January 2019 / Accepted: 29 January 2019 / Published: 1 February 2019
(This article belongs to the Special Issue Arthropod Pest Control in Orchards and Vineyards)
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Abstract

The leafhopper Erasmoneura vulnerata (Fitch) (Hemiptera: Cicadellidae) is native of Northern and Central America where it occurs on wild and cultivated grapes as well as on a number of secondary hosts. This species was recorded for the first time in Europe (Italy, Veneto region) in 2004. Since then it has spread over Northern Italy and Slovenia. Studies on the biology of E. vulnerata in America are limited and thus its phenology was investigated on Vitis labrusca L. and Vitis vinifera L. plants under field and semi-field conditions. These observations suggest that E. vulnerata can complete 2–3 generations per year. The development of E. vulnerata from first instar nymphs to adults was studied under controlled conditions (about 23 °C). Developmental times lasted from 16.1 days in July–August to 19.5 days in September, and this variability was probably due to grape cultivar and plant susceptibility. Data were consistent with the number of generations previously reported. Erasmoneura vulnerata was more abundant on vines close to overwintering sites than on those located 100–250 m from these sites and contiguous to commercial vineyards. View Full-Text
Keywords: Cicadellidae; grape; seasonal abundance; development; phenology Cicadellidae; grape; seasonal abundance; development; phenology
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Duso, C.; Moret, R.; Manera, A.; Berto, D.; Fornasiero, D.; Marchegiani, G.; Pozzebon, A. Investigations on the Grape Leafhopper Erasmoneura vulnerata in North-Eastern Italy. Insects 2019, 10, 44.

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