From 2012 through 2020, a survey of wheat stem sawfly, Cephus cinctus Norton, was conducted in wheat (Triticum aestivum L.) fields in Eastern Colorado. In 2013, results showed sawfly infestations concentrated in the northern part of the state with only a few highly infested sites, with 38 of the 94 sampled sites having any infestation (five of which had >50% infestation levels). By 2020 sawfly had been found in all eastern counties sampled, and 72 of the 106 sites sampled were found to contain sawfly (11 of which had >50% infestation levels). The spread of this pest across the Colorado wheat-growing region will have lasting economic effects. The information gathered from this and future surveys will inform wheat variety development and aid in management decisions made by growers across the state.

中文翻译：

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科罗拉多州东部小麦茎叶蝇（膜翅目：头孢科）侵染小麦的调查

从 2012 年到 2020 年，在科罗拉多州东部的小麦 (Triticum aestivum L.) 田间对小麦茎叶蜂 Cephus cinctus Norton 进行了调查。2013 年，结果显示锯蝇侵染集中在该州北部，只有少数几个高度侵染的地点，94 个采样地点中有 38 个有任何侵染（其中 5 个侵染水平超过 50%）。到 2020 年，在所有采样的东部县都发现了锯蝇，在 106 个采样点中，有 72 个被发现含有锯蝇（其中 11 个的感染水平 > 50%）。这种害虫在科罗拉多小麦种植区的蔓延将产生持久的经济影响。从这次和未来的调查中收集的信息将为小麦品种的开发提供信息，并有助于全州种植者做出的管理决策。