PDF(Pubmed)
Abstract：
Recent studies on oestroidean Diptera (Brachycera) are providing a comprehensive and nuanced understanding of the evolutionary history of this remarkably diverse clade of holometabolous insects. The Oestroidea, which includes formidable pests such as various blowflies, botflies, and flesh flies that infest livestock, pets and humans, are mostly composed of beneficial species that act as scavengers or parasitoids on various pest insects. In our research, we used genomic methods to elucidate the phylogenetic position of Nesodexia corsicana Villeneuve, 1911 (Diptera: Calliphoridae), a mysterious oestroid species endemic to Corsica and characterized by distinctive morphological features that have puzzled taxonomists for years. Contrary to initial hypotheses, our results place Nesodexia Villeneuve, 1911 within the Calliphoridae subfamily Rhinophorinae, a small lineage of terrestrial isopod parasitoids. Through detailed morphological analysis of adults of both sexes and eggs, we uncovered significant insights consistent with our phylogenomic reconstruction. The unique morphological features of the species, coupled with its restricted and fragmented habitat, highlight its potential conservation importance. We delineated the area of occupancy for N. corsicana and assessed its \"threatened\" category using specific IUCN Red List criteria. In addition, we mapped the available habitat within its range and determined potential key biodiversity areas (KBA) triggered by N. corsicana. New potential KBAs are only partially covered by the Corsican Regional Park. Finally, we mapped the distribution of habitats on the island to assess the potential distribution of the species beyond its currently known geographic range.
摘要：
最近对雌性双翅目昆虫（Brachycera）的研究正在为这种非常多样化的全代谢昆虫进化历史提供全面而细致的了解。Oestroidea,其中包括强大的害虫，如各种苍蝇，botfly,肉蝇感染牲畜，宠物和人类,主要由有益物种组成，它们在各种害虫上充当清道夫或寄生虫。在我们的研究中,我们使用基因组方法来阐明NesodexiacorsicanaVilleneuve的系统发育位置，1911年（双翅目：Calliphoridae），科西嘉岛特有的一种神秘的类人猿物种，其特征是独特的形态特征，多年来一直困扰着分类学家。与最初的假设相反，我们的结果是NesodexiaVilleneuve，1911年在Calliphoridae亚科中，陆地等足类寄生虫的一小部分谱系。通过对成年男女和卵的详细形态分析，我们发现了与我们的系统基因组重建一致的重要见解。该物种独特的形态特征，再加上其受限制和支离破碎的栖息地，强调其潜在的保护重要性。我们划定了N.corsicana的占用区域，并使用特定的IUCN红色名录标准评估了其“受威胁”类别。此外,我们绘制了其范围内的可用栖息地，并确定了由N.corsicana触发的潜在关键生物多样性区域（KBA）。科西嘉地区公园仅部分覆盖了新的潜在KBA。最后,我们绘制了岛上栖息地的分布图，以评估该物种超出其当前已知地理范围的潜在分布。
