López Carmen, Las Heras Sandra, Garrido-Jurado Inmaculada, Quesada-Moraga Enrique, Eizaguirre Matilde
Department of Crop and Forest Sciences, University of Lleida-Agrotenio Center, Av. Al. Rovira Roure 191, 25198 Lleida, Spain.
Orius Soluciones Entomológicas, 17800 Olot, Spain.
Insects. 2022 Aug 29;13(9):781. doi: 10.3390/insects13090781.
(Lepidoptera: Crambidae), a species native to East Asia, has been especially devastating in the Mediterranean region and Catalonia, northeast Spain, where is an essential component of the natural forest. As an invasive species, the lack of biotic mortality factors in the arrival region has been one of the main factors allowing its expansion. Therefore, this study aimed to collect and identify possible indigenous natural enemies adapting to the new species in the boxwood of the southwest Mediterranean region. Later, the efficacy of some of the collected species for controlling larvae was tested in laboratory conditions. The larval collection was carried out in successive years in the boxwood of the region. Several collected larvae were infected with an entomopathogen, , or parasitized by , both common in native Lepidoptera caterpillars. The strain was found to be highly virulent against the developed larvae of , which suggests that may be an effective treatment in parks and gardens when the first overwintering larvae are detected. The biology of the parasitoid identified is not very well known in Europe, which suggests the necessity of studying its biology and alternative hosts in the region in order to improve its population.
（鳞翅目：草螟科），一种原产于东亚的物种，在地中海地区和西班牙东北部的加泰罗尼亚造成了特别严重的破坏，在那里它是天然森林的重要组成部分。作为一种入侵物种，到达地区缺乏生物致死因子是其得以扩张的主要因素之一。因此，本研究旨在收集和鉴定地中海西南部地区黄杨木中可能适应这种新物种的本土天敌。随后，在实验室条件下测试了一些收集到的物种对控制该物种幼虫的效果。幼虫收集工作在该地区的黄杨木林中连续进行了数年。几只收集到的幼虫被一种昆虫病原体感染，或被寄生，这两种情况在本地鳞翅目毛虫中都很常见。发现该菌株对该物种发育成熟的幼虫具有高毒力，这表明在检测到第一批越冬幼虫时，该菌株可能是公园和花园中的一种有效防治手段。在欧洲，已鉴定出的这种寄生蜂的生物学特性还不太为人所知，这表明有必要在该地区研究其生物学特性和替代宿主，以增加其种群数量。
