An plate illustrating five brown to black tenebrionid beetles (in the genera Salax, Edrotes, Triorophus, and Calyptopsis), with line drawings of head, palp, and antennal details

A green paper cover with text reading "SUITES A BUFFON, PLANCHES, 5 Livraison, INSECTES, COLÉOPTÈRES. PARIS, A LA LIBRAIRIE ENCYCLOPÉDIQUE DE RORET. Rue Hautefeuille, N°12"

For this late night #TenebTuesday here's a hand-colored plate of #tenebrionids from Lacordaire's monumental Genera des Coléoptères—this collection of twelve plates and text explanations was still in their original paper wrappers!

Two small beetle specimens glued to a T-shaped "point"

It's #TenebTuesday! The tiny #tenebrionids on this intriguing two for one "point" are Soemias minuta Champion, 1884 (Pimeliinae: Edrotini), from Tabasco, Mexico #Coleoptera #Tenebrionidae

And for the first #TenebTuesday of 2025—another angle of Ammodonus granosus—this genus can be separated from other North American #tenebrionids by their indented clypeus, divided eyes, and body densely covered in scale-like setae! #Coleoptera