Tenebrio molitor Linnaeus 1758

Tenebrio (s. str.) molitor Linnaeus, 1758 Ferrant 1911: 200; Libbrecht 1988: 11; Gerend et al. 2007: 290; Köhler 2013: 102. Material. 1♂, Mamer, 9.VI.[1890], V. Ferrant lgt. (MNHNL138468); 1♂, ditto, 11.VI.[1890] (MNHNL138469); 1♀, Bertrange, 10.VIII.1958, A. Mousset lgt. (MNHNL138470); 1♀, ditto 21.VI.1959, (MNHNL138471); 1♀, ditto, 4.VII.1960 (MNHNL138472); 1♂, ditto, 23.VII.1971 (MNHNL138473); 1♀, ditto, 2.VIII.1975 (MNHNL138474); 1♂, ditto, 25.X.1978 (MNHNL138475); 1♂, Remich, 26.VII.2000, M. Meyer lgt. (MNHNL138476); 1♂, Alzingen, G. Ewen lgt. (MNHNL138477); 1♀, Betzdorf, Roodt-sur-Sûre, VIII.2013, Buckland lgt. (MNHNL138478); 1♀, Luxembourg Ground, 25.VII.2019, F. Vitali lgt. (MNHNL138479); 1♂, Luxembourg City, Bambësch, at light, 21.VII.2013, F. Vitali lgt. (CFV); 1♀, ditto, VII.2021 (CFV). Note. This synanthropic, cosmopolitan species, long known as a pest of grain and flour products, is widespread throughout all adjacent regions (Géhin 1846; Fournel & Géhin 1847; Godron 1863; Everts 1903; Libbrecht 1988; Köhler & Klausnitzer 1998; Lillig 1999; Troukens 2005; Soldati 2007; Thomaes et al. 2025). Once very common everywhere, the species now appears to be in decline.