Notiophilus palustris, the marsh big-eyed beetle,A Treatise on the Western Hemisphere Caraboidea (Coleoptera) is a species of ground beetle in the genus Notiophilus native to the Palearctic and the Nearctic.

In Europe, it is found in Austria, Belarus, Belgium, Bosnia and Herzegovina, Great Britain including the Isle of Man,Global Biodiversity Information Bulgaria, the Czech Republic, mainland Denmark, Estonia, Finland, mainland France, Germany, Hungary, the mainland Italy, Kaliningrad, Latvia, Liechtenstein, Lithuania, Luxembourg, Moldova, North Macedonia, mainland Norway, Poland, Russia, Slovakia, Slovenia, mainland Spain, Sweden, Switzerland, the Netherlands, Ukraine and Yugoslavia.

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