Background Given their sensitivity to environmental alterations, odonates act as reliable bioindicators to assess the effects of changes in freshwater ecosystems and associated terrestrial habitats. The region comprised between Lario and Brianza (Provinces of Como, Lecco and Monza and Brianza - Lombardy, N Italy) is one of the most urbanised of the Italian peninsula and large parts of its territory have been heavily altered, especially at low elevation. Despite this pervasive anthropogenisation, the area is still characterised by a considerable variety of freshwater habitats, possibly harbouring rich odonate communities, which, however, have been never thoroughly investigated. This study aimed to produce the first commented checklist of the Odonata of this region, accompanied by distribution maps. New information The work is based on 12,093 records spanning from 1981 and 2022, derived from literature (289), revision of collections (42), citizen-science projects (1249) and unpublished data from the authors and their collaborators (10,513). Overall, fifty-five species occur - or occurred in the past - in the study area (20 Zygoptera and 35 Anisoptera). One species, Erythromma najas, was confirmed exclusively before 1978, while seven species (Lestes barbarus, Coenagrion scitulum, Aeshna affinis, Anax ephippiger, Somatochlora arctica, Sympetrum meridionale and Trithemis annulata) have been recorded only after 2000. Records referring to Chalcolestes parvidens and Sympetrum flaveolum were considered questionable and excluded from the checklist. A list of species for each protected site is additionally provided. This work highlighted the importance for odonates of Lario and Brianza Regions from a national perspective, in particular for species of conservation priority/interest, such as Sympecma paedisca, Oxygastra curtisii and Sympetrum depressiusculum.

中文翻译：

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高度城市化地区的蜻蜓多样性：拉里奥和布里安扎（意大利北部伦巴第）的豆娘和蜻蜓（昆虫纲、蜻蜓目）注释清单

背景 鉴于其对环境变化的敏感性，臭氧酸盐可作为可靠的生物指示剂来评估淡水生态系统和相关陆地栖息地变化的影响。拉里奥和布里安扎（科莫省、莱科省、蒙扎省和布里安扎省 - 意大利北部伦巴第）之间的地区是意大利半岛城市化程度最高的地区之一，其大部分领土已发生严重变化，特别是在低海拔地区。尽管人类化活动普遍存在，该地区仍然以淡水栖息地的多样性为特征，可能蕴藏着丰富的奥酸盐群落，但从未对其进行过彻底调查。这项研究的目的是制作该地区第一份蜻蜓目评论清单，并附上分布图。新信息 这项工作基于 1981 年至 2022 年的 12,093 条记录，这些记录来自文献 (289)、馆藏修订 (42)、公民科学项目 (1249) 以及作者及其合作者的未发表数据 (10,513)。总体而言，研究区域内出现或过去出现过 55 个物种（20 个交翅目和 35 个异翅目）。其中一种物种 Erythromma najas 在 1978 年之前才被确认，而 7 个物种（Lestes barbarus、Coenagrion scitulum、Aeshna affinis、Anax ehippiger、Somatocila arctica、Sympetrum meridionale 和 Trithemis annulata）在 2000 年之后才被记录。 Sympetrum flaveolum 被认为是有问题的，并被排除在清单之外。另外还提​​供了每个受保护地点的物种清单。这项工作从国家角度强调了拉里奥和布里安扎地区的东方动物的重要性，特别是对于优先保护/感兴趣的物种，如 Sympecma paedisca、Oxygastra curtisii 和 Sympetrum depressiusculum。