Abstract
The spongy moth, Lymantria dispar L. (Lepidoptera: Eribidae), is a serious pest of deciduous forests and causes widespread defoliation. Despite this, few studies have evaluated the wide-ranging surveillance of adult male L. dispar using different types of pheromone-baited traps. We evaluated the effect of trap type on captures of adult male L. dispar at 18 sites in Europe; two in Slovenia, two in Spain, 12 in Greece, one in Hungary, and one in Croatia. Seven different trap types, G trap and eGymer 1-6, were evaluated June-September 2022 and 2023. Generally, captures of L. dispar started in late June and lasted until mid-August. Trap type affected captures. The G trap (consisting of a dark brown plastic rectangular parallel-piped body) caught significantly more L. dispar than other trap types in many instances, particularly when the peak of the flight period occurred. Captures of L. dispar in pairs of different trap types showed a significant correlation in trap catch in most investigations, suggesting that most detected comparable fluctuations in L. dispar abundance. We recommend that the G trap be used for wide-ranging surveillance of L. dispar in Europe.
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