ABSTRACT Light brown apple moth, Epiphyas postvittana (Lepidoptera: Tortricidae) is regarded as the key insect pest in Australian vineyards and it is also an important pest of apples and citrus. E. postvittana is indigenous to Australia and has a wide geographical distribution. Recent observations suggest that leafroller species other than E. postvittana may be causing damage in grapevine canopies. A study of tortricids was undertaken in Adelaide Hills and McLaren Vale vineyards, South Australia. A total of 407 specimens of Tortricidae were collected from grapevine canopies. Molecular techniques were used to identify species. The mean prevalence of E. postvittana per sample was 91.0% in 2014/15 and 96.2% in 2015/16. Larval Acropolitis rudisana, lucerne leafroller, Merophyas divulsana and cotton tipworm, Crocidosema plebejana were also found on the grapevine canopy at much lower densities for the first time. The presence of leafroller species A. rudisana, M. divulsana and C. plebejana on grapevines confirms these species of Tortricidae may also be present in South Australian vineyards. This study confirms that E. postvittana is the most common tortricid pest in Adelaide Hills and McLaren Vale vineyards and also illustrates the utility of molecular methods in determining with confidence the species identity of larval Tortricidae.

中文翻译：

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哪些种类的 Tortricidae 卷叶虫是南澳大利亚葡萄园的主要害虫？

摘要 浅褐色苹果蛾（Epiphyas postvittana）（鳞翅目：螟科）被认为是澳大利亚葡萄园的主要害虫，也是苹果和柑橘的重要害虫。E. postvittana 原产于澳大利亚，地理分布广泛。最近的观察表明，除 E. postvittana 以外的卷叶树物种可能会对葡萄树冠造成损害。在南澳大利亚的阿德莱德山 (Adelaide Hills) 和麦克拉伦谷 (McLaren Vale) 葡萄园进行了一项关于 Tortricids 的研究。从葡萄树冠收集了总共 407 个 Tortricidae 标本。分子技术被用于鉴定物种。每个样本的 E. postvittana 平均患病率在 2014/15 年为 91.0%，在 2015/16 年为 96.2%。Acropolitis rudisana 幼虫、苜蓿滚叶虫、Merophyas divulsana 和棉尖虫，Crocidosema plebejana 也首次在葡萄树冠上以低得多的密度被发现。葡萄藤上存在的卷叶虫 A. rudisana、M. divulsana 和 C. plebejana 证实了这些 Tortricidae 物种也可能存在于南澳大利亚的葡萄园中。这项研究证实了 E. postvittana 是阿德莱德山和麦克拉伦谷葡萄园中最常见的 Tortricid 害虫，并且还说明了分子方法在确定 Tortricidae 幼虫物种身份方面的效用。