Potapov Mikhail, Porco David, Deharveng Louis
Moscow State Pedagogical University, Kibalchicha str., 6, korp. 3, Moscow, 129278, Russia..
Zootaxa. 2018 Mar 14;4394(3):383-394. doi: 10.11646/zootaxa.4394.3.4.
Colour pattern is the most common character to identify species in several large genera of Collembola. Its use often raises problems due to various and poorly investigated extent of chromatic variability among species. Isotomurus festus sp. nov. is here described from Kunashir Isl. (the Kuriles, the Far East of Russia). The species, a member of the 'antennalis' group, is characterized by the lack of trichobothria and slender claws, but is greatly variable in coloration. DNA barcoding (COI) results supports that all the colour forms encountered belong to the same species. While colour pattern has been shown to be the most reliable character for species identification in several Entomobryidae genera, it might not be the case in Isotomurus Börner, 1903, the sole large Isotomidae genus where colour pattern is routinely used for taxonomy.
体色模式是弹尾目几个大属中识别物种最常用的特征。由于物种间颜色变异的程度各不相同且研究不足，其应用常常引发问题。新种费氏等节跳虫（Isotomurus festus sp. nov.）在此描述于国后岛（俄罗斯远东地区的千岛群岛）。该物种是“触角型”类群的成员，其特征是没有毛窝和细长的爪，但在体色上变化很大。DNA条形码（COI）结果支持所遇到的所有颜色形态都属于同一物种。虽然体色模式已被证明是几个球角跳虫科属物种识别中最可靠的特征，但在1903年的博纳等节跳虫属（Isotomurus Börner）中可能并非如此，它是等节跳虫科唯一的大属，在分类学中常规使用体色模式。
