Graduate School of Agriculture; Kindai University; 3327-204 Nakamachi; Nara 631-8505; Japan.
5-9-40 Juroku-cho; Nishi-ku; Fukuoka 819-0041; Japan.
Zootaxa. 2023 May 3;5277(3):509-520. doi: 10.11646/zootaxa.5277.3.4.
We describe a new species of Collembola, Crossodonthina elegans sp. nov., collected from Yonaguni-jima, southwest Japan. This new species differs from other known congeners because it has an unusual white or yellow color pattern on Ant. I and Th. I. It is similar to C. laterisensillata Ohira, Kataoka, Tanooka & Nakamori, 2022, in the structure of mouthparts, 3 + 3 eyes, cephalic chaeta O present, and tubercles De and Dl separated on Abd. V. However, it is easily distinguished from the latter species to maxilla without ciliated lamella, cephalic tubercle Dl separated from L and So, 5 chaetae of tubercle L on Abd. I and III, and macrochaetae apically rounded. We provide the key to all species of the genus and discuss the unique color pattern of the new species among the tribe Lobellini.
我们描述了一种新的跳虫，来自日本西南部的与那国岛的 Crossodonthina elegans sp. nov.。这个新物种与其他已知的近缘种不同，因为它在 Ant. I 和 Th. I 上具有不寻常的白色或黄色颜色模式。它与 Ohira、Kataoka、Tanooka 和 Nakamori 于 2022 年描述的 C. laterisensillata 在口器结构、3 + 3 眼、存在头部刚毛 O、以及 Abd. V 上的 De 和 Dl 分开的结节相似。然而，它很容易与后者区分开来，后者的下颚没有纤毛瓣，头部结节 Dl 与 L 和 So 分开，Abd. I 和 III 上的结节 L 有 5 根刚毛，以及顶端圆润的macrochaetae。我们提供了该属所有种的关键特征，并讨论了新种在 Lobellini 部落中的独特颜色模式。
