130 years from discovery to description: micro-CT scanning applied to construct the integrative taxonomy of a forgotten moth from Southern Africa (Lepidoptera: Geometridae)

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY Systematic Entomology Pub Date : 2024-03-21 DOI:10.1111/syen.12627
Mikael Englund, Kyung Min Lee, Hermann Staude, Anne Duplouy, Axel Hausmann, Elina Laiho, Max Söderholm, Pasi Sihvonen
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Abstract

X-ray micro-computed tomography (micro-CT) of dried and pinned museum specimens combined with advanced image processing can provide a useful, novel and non-destructive tool for integrative insect taxonomy. This paper demonstrates how micro-CT can be applied to provide unambiguous illustrations of diagnostic morphological characters for new taxa description and to understand how micro-CT imaging may complement other imaging techniques. Following micro-CT scanning, a semi-automatic segmentation and volume rendering protocol was used to portray the wing venation and diagnostic structures and ornamentation of male genitalia from multiple angles. Using micro-CT images, we provide the description of a conspicuous geometrid moth from southern Africa (Lepidoptera: Geometridae), which has been present in collections since 1894, but left without an available name. Using a multigenetic dataset comprising 273 terminal taxa from the superfamily Geometroidea, we constructed a molecular phylogeny to place our study species to an isolated lineage in Geometridae: Larentiinae, tribe Xanthorhoini sensu lato. We describe it as Chloecolora vergetaria new genus, new species Englund & Staude, and provide diverse ecological information on its distribution, habitat, host plant, adult and immature stages, and parasites. We found micro-CT imaging particularly useful in two- and three-dimensional imaging of wings, providing detailed information for instance on non-tubular folds that may be difficult to distinguish using other techniques.

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从发现到描述的 130 年:应用微型 CT 扫描构建南部非洲一种被遗忘的蛾类(鳞翅目:尺蠖蛾科)的综合分类法
对风干和固定的博物馆标本进行 X 射线显微计算机断层扫描(micro-CT),并结合先进的图像处理技术,可为昆虫综合分类学提供一种有用、新颖和非破坏性的工具。本文展示了如何应用显微 CT 为新类群描述提供诊断形态特征的明确图解,并了解显微 CT 成像如何与其他成像技术互补。在进行显微 CT 扫描后,我们使用半自动分割和体积渲染协议从多个角度描绘了翅脉和雄性生殖器的诊断结构和装饰。利用微型计算机断层扫描图像,我们描述了来自非洲南部的一种明显的尺蠖蛾(鳞翅目:尺蠖蛾科),这种蛾自 1894 年以来一直存在于收藏品中,但却没有一个可用的名称。利用由尺蠖蛾超科 273 个终端类群组成的多基因数据集,我们构建了一个分子系统发生,将我们的研究物种归入尺蠖蛾科:Larentiinae,Xanthorhoini sensu lato 支系中的一个孤立世系。我们将其描述为 Chloecolora vergetaria 新属、新种 Englund & Staude,并提供了有关其分布、栖息地、寄主植物、成虫和未成熟阶段以及寄生虫的各种生态信息。我们发现微型计算机断层扫描成像技术在翅膀的二维和三维成像中特别有用,例如,它能提供非管状褶皱的详细信息,而使用其他技术可能很难区分这些褶皱。
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来源期刊
Systematic Entomology
Systematic Entomology 生物-进化生物学
CiteScore
10.50
自引率
8.30%
发文量
49
审稿时长
>12 weeks
期刊介绍: Systematic Entomology publishes original papers on insect systematics, phylogenetics and integrative taxonomy, with a preference for general interest papers of broad biological, evolutionary or zoogeographical relevance.
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