Abstract
Cis taurus (Reitter) is the type-species of Macrocis Reitter, a genus subsequently synonymized with Cis Latreille. It names a diversified but barely studied species-group of Cis, the taurus group. The objective of the present work is to redescribe C. taurus, designate a lectotype and provide the first description of male abdominal terminalia of the species. We also provide new data on its geographic distribution, restricted to three major Mexico mountain ranges: the Sierra Madre Oriental, the Sierra Madre de Chiapas and the Transmexican Volcanic Belt (Sierra Nevada). This is a first and important step in the ongoing revision of the taurus species-group.
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