The new species Rhopalosiphum chusqueae Pérez Hidalgo & Villalobos Muller, is described from apterous viviparous females caught on Chusquea tomentosa in Cerro de la Muerte (Costa Rica). The identity of the species is supported both by the morphological features and by a molecular phylogenetic analysis based on a fragment of the mitochondrial DNA containing the 5’ region of the cytochrome c oxidase 1 (COI) and on the nuclear gene coding for the Elongation factor-1 alpha (EF1α). The taxonomic position of the new species is discussed. An identification key to the Aphidinae species living on plants of Bambusoideae (Poaceae) is presented.
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机译：新物种Rhoopalosiphum chusqueaePérezHidalgo和Villalobos Muller是从在Cerro de la Muerte（哥斯达黎加）的Chusquea tomentosa捕获的无卵胎生雌性中描述的。形态特征和分子系统发育分析均支持该物种的身份，该分析基于包含细胞色素C氧化酶1（COI）5'区的线粒体DNA片段以及编码延伸因子的核基因-1 alpha（EF1α）。讨论了新物种的分类位置。提出了一种对生活在竹节虫科（禾本科）上的蚜虫物种的识别钥匙。
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