We present the first report of Amblycerus dispar (Sharp) attacking stored almonds [Prunus dulcis (Mill.) D. A. Webb] in Argentina. A summarized diagnosis, illustrations, and photographs of the adult and mature larva are provided to facilitate identification. We performed species distribution models for A. dispar and its main host plant Geoffroea decorticans (Gillies ex Hook. & Arn.) Burkart. We include A. dispar into a previous morphological character matrix and conduct a phylogenetic analysis to infer its phylogenetic position. The evolution of host plant associations of the genus Amblycerus is herein re-analyzed. A. dispar and its main host shows high suitability areas especially in central-west Argentina and Chile, whereas for the USA, high suitability areas were found for the south-western which include the area of almond production in this country. Although the presence of A. dispar in the USA region is very unlikely, we recommend some awareness as other bruchines are present in the area. Although A. dispar is unlikely to become an economically important risk, monitoring for early detection is recommended to avoid productivity loss, especially when the native host is nearby cultivated areas. A. dispar is hypothesized to be the sister species of A. schwarzi Kingsolver. The colonization of a Rosaceae species is a novelty for this genus, being host shifts known as an important factor affecting both natural and agricultural systems.

中文翻译：

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Amblycerus dispar 幼虫（鞘翅目：Chrysomelidae：Bruchinae）的异常宿主选择及其对储存杏仁（Prunus dulcis）的潜在影响

我们提交第一份报告散菇（尖锐）攻击储存的杏仁[李子(Mill.) DA Webb] 在阿根廷。提供了成人和成熟幼虫的总结诊断、插图和照片，以方便识别。我们进行了物种分布模型A. 差异及其主要寄主植物Geoffroea detricans(Gillies ex Hook. & Arn.) Burkart。我们包括A. 差异进入先前的形态特征矩阵并进行系统发育分析以推断其系统发育位置。该属寄主植物群落的演变龙涎香在此重新分析。A. 差异其主要寄主显示出高适宜区，尤其是在阿根廷中西部和智利，而对于美国，发现高适宜区在西南部，包括该国的杏仁生产区。虽然存在A. 差异在美国地区不太可能发生，我们建议您提高一些认识，因为该地区存在其他 bruchines。虽然A. 差异不太可能成为经济上重要的风险，建议监测早期发现以避免生产力损失，特别是当本地宿主在耕地附近时。A. 差异被假设为姐妹物种A. schwarzi金索尔。蔷薇科物种的定殖对于该属来说是一个新事物，因为宿主的变化被称为影响自然和农业系统的重要因素。