小蛛狸藻节（学名：Utricularia sect. Aranella）为狸藻属下的一节。其下的十个物种皆为小型的陆生食虫植物，分布于南美洲热带，其中有一个物种分布延伸至非洲热带。1913年，约翰·亨德利·巴尔哈特（John Hendley Barnhart）将该组单独描述为「小蛛属」。在小宫定志1973年对狸藻属的分类修订中，将约翰·亨德利·巴尔哈特描述的小蛛属降为狸藻属的一个亚属。1986年，彼得·泰勒在其狸藻属分类学专着《狸藻属——分类学专着》中，又将在该论文中他降低了小宫的亚属层级而移到节的范围内，并将小宫定志设置的亚属降为狸藻亚属（Utricularia）下的一个组。经过进一步的系统发生学数据的支持，在恢复双瓣狸藻亚属（Bivalvaria）的同时，也将小蛛狸藻组置于其下。

Utricularia sect. Aranella is a section in the genus Utricularia. The ten species in this section are small terrestrial carnivorous plants native to tropical South America with one species also extending into tropical Africa. John Hendley Barnhart originally described and published this section in 1913 as a separate genus, Aranella. Sadashi Komiya revised the genus Utricularia in a 1973 taxonomic review and placed Barnhart's genus at the rank of subgenus within Utricularia. Peter Taylor then published his taxonomic monograph of Utricularia in 1986 in which he reduced Komiya's subgenus to the rank of section, placing it within subgenus Utricularia. More recent phylogenetic data and revisions have reinstated subgenus Bivalvaria and have placed this section within it.