Summary Based on morphology, measurements of juveniles and female specimens and sequences of the D2/ D3 expansion 28S rDNA gene and ITS1 analysis by DNA barcode technique, a Xiphinema americanum group species associated with olive trees from state of Sao Paulo, Brazil was identifi ed as X. santos. This is the first report of X. santos in Southern Hemisphere and outside the European and African continents, thus extending its geographic range.

中文翻译：

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Xiphinema santos 在巴西的首次出现

小结 基于形态学、幼鱼和雌鱼标本的测量以及 D2/D3 扩增 28S rDNA 基因的序列和 DNA 条形码技术的 ITS1 分析，与巴西圣保罗州橄榄树相关的美洲剑齿苋属种被鉴定为X.桑托斯。这是南半球和欧洲和非洲大陆以外的X. santos的首次报告，从而扩大了其地理范围。