Palaeostigus palpalis (A, B) and Stenomastigus longicornis (CeF). Male in dorsal view (A, C); female in dorsal (B, D) and lateral (F) view; and elytra of female in posterior view
(E). Arrowheads showing anterior elytral impressions, posterior gap, raised elytral suture and roof-like shape of elytra. Scale bars ¼ 1 mm.