The genus Neatus LeConte (Coleoptera: Tenebrionidae) in North America, with the description of a new and widespread “cryptic” species

North American darkling beetles of the genus Neatus LeConte 1862 are reviewed and diagnosed, with distribution data and notes on natural history. The species may be confused with those of Tenebrio L., the “meal-worm” beetles. A newly described species, found to have a surprisingly wide distribution, is separated from the more common N. tenebrioides (Beavois); both co-occur in nature and specimens have been historically mixed in collections. Occurrences of one European species, N. noctivagus Mulsant, are reported for the first time; represented by only a few old specimens, the species is probably not established in North America.