Platydema violacea

Platydema violacea (Fabricius, 1790) Gerend & Braunert 1997: 211. Material. 3 exx., Vianden, 23.VII.1976, C. Hahn lgt. (MNHNL138557–59); 1♂, Strassen, 29.III.1996, A. Mousset lgt. (MNHNL138560); 1♂, ditto, 1.IV.1996 (MNHNL138561); 2♀♀, ditto, 17.I.1998 (MNHNL138562– 63); 12 exx., Luxembourg City, Bambësch, on Quercus, 4.IV.2009, F. Vitali lgt. (CFV). Note. A mycetophagous species associated with the genus Auricularia Bull. ex Juss., recorded throughout all adjacent regions (Everts 1903; Libbrecht 1988; Köhler & Klausnitzer 1998; Soldati 2007; Thomaes et al. 2025). However, it appears to be very rare in the Netherlands (Everts 1903), in decline in Belgium (Troukens 2005), rare and endangered in Saarland (Lillig 1999), while seemingly expanding northward in Rhineland (Lillig 1999). Formerly regarded as very rare in Lorraine (Géhin 1846; Fournel & Géhin 1847; Godron 1863), it is now considered localized but not very rare (F. Soldati in litt.). In Luxembourg, the species is localized but locally abundant.