Background Ants (Formicidae) in Mexico have usually been undersampled despite their ecological significance and their utility as environmental service providers and bioindicators. This study estimates the species richness and the narrow endemic species number of ants across Mexico. It also documents the presence of one species newly recorded in Mexico and 19 new state-based records of 14 species from central and north Mexico. No surveys have been performed in most of the localities where we report those records, suggesting the need for a higher sampling effort across the country. New information We present an ant species richness estimation and a narrow endemic ant species estimation in a grid of 0.5 degrees in Mexico. Stenamma schmitii is recorded for the first time from Mexico. Additionally, new state-based records of Azteca velox, Dorymyrmex insanus, Camponotus coruscus, Camponotus striatus, Formica propatula, Lasius latipes, Neivamyrmex melanocephalus, Neivamyrmex rugulosus, Syscia augustae, Atta texana, Cephalotes scutulatus, Crematogaster crinosa and Temnothorax andrei are recorded.

中文翻译：

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蚂蚁的新分布记录以及墨西哥蚂蚁物种丰富度和特有模式的评估

背景 墨西哥的蚂蚁（蚁科）尽管具有生态意义以及它们作为环境服务提供者和生物指示剂的效用，但通常采样不足。这项研究估计了墨西哥蚂蚁的物种丰富度和狭窄的特有物种数量。它还记录了墨西哥新记录的一种物种的存在，以及来自墨西哥中部和北部的 14 个物种的 19 个新的州记录。在我们报告这些记录的大多数地方都没有进行任何调查，这表明需要在全国范围内加大抽样力度。新信息 我们提出了墨西哥 0.5 度网格中的蚂蚁物种丰富度估计和狭窄的地方性蚂蚁物种估计。Stenamma schmitii 是第一次从墨西哥记录下来。此外，Azteca velox 的新州记录，