Cephennium tensum group

This lineage includes two Iberian species characterized by a small and weakly convex (cross-section) body of pale-reddish to reddish colouration, slender habitus, eyes without ommatidia, apically weakly curved male protibiae, and a conspicuously slender aedeagus with indistinct internal structures and with very long and slender parameres with a very long apical seta.