Pan Zhi-Xiang, Shi Shi-di, Zhang Feng
School of Life Sciences, Taizhou University, Linhai, Zhejiang 317000, China.
Zookeys. 2011(152):21-42. doi: 10.3897/zookeys.152.1455. Epub 2011 Dec 8.
Morphology of the first instar larvae of Collembola has considerably taxonomical and phylogenetic significance. We describe the first instar larvae for the first time in Homidia. External morphology of first instar larvae and adults of Homidia jordanai sp. n. is described based on observations under light and scanning electron microscopes. Most organs of adults bear considerably more setae than the first instar larvae; in addition, first instar larval Homidia lack labial seta R, seta on tenaculum, mucronal spine, and dental spines. The new species is characterized by weakly pigmented body, long antennae subequal to body in length, 1+1 inner macrochaetae on Abd. III, few inner macrochaetae on posterior Abd. IV, and spiny and short seta pi on dental base. Differences between new species and other two similar ones, taxonomical significance of the first instar larvae and the position of Homidia are also discussed.
弹尾目昆虫一龄幼虫的形态学具有重要的分类学和系统发育意义。我们首次描述了霍米迪亚属的一龄幼虫。基于光学显微镜和扫描电子显微镜下的观察，描述了约旦霍米迪亚新种一龄幼虫和成虫的外部形态。成虫的大多数器官着生的刚毛比一龄幼虫多得多；此外，霍米迪亚一龄幼虫没有唇刚毛R、抱握器上的刚毛、尾刺和齿刺。新种的特征为体色浅、触角长且长度约等于体长、腹部III节有1 + 1根内侧大刚毛、腹部IV节后半部分内侧大刚毛较少、齿基部有刺状且短的刚毛pi。还讨论了新种与其他两个相似种之间的差异、一龄幼虫的分类学意义以及霍米迪亚属的地位。
