Cephennium asturicum group

This lineage includes only one Iberian species, C. asturicum, characterized by a robust and strongly convex (cross-section) body with a large and strongly transverse pronotum, eyes composed of 4-5 ommatidia, elytra with very fine supra-humeral carinae, unmodified male protibiae, and an aedeagus with a long ventral process, distinct internal structures, and short thin parameres with a very long apical seta.