Aedeagi of Quedius recorded from Russia: parameral (A, D, G, J, M, P, S, V, Y), lateral view (B, E, H, K, N, Q, T, W, Z), underside of paramere (C, F, I, L, O, R, U, X, AA). Q. persimilis (A–C); Q. centrasiaticus (D–F); Q. omissus (modified from Coiffait 1977) (G–I); Q. nitipennis (J–L); Q. fellmani (M–O); Q. paraboops (P–R); Q. boops (S–U); Q. boopoides (V–X). Scale bars: 0.5 mm (A, B, D, E, G, H, J, K, M, N, P, Q, S, T, V, W, V), 0.25 mm (C, F, I, L, O, R, U, X).