Book review: <i>Guide to the Butterflies of Russia and Adjacent Territories, Volume 2, libytheidae, Danaidae, Nymphalidae, Riodinidae, Lycaenidae</i>, by V. K. Tuzov, P.V. Bogdanov, S.V. Churkin, A.V. Dantchenko, A.L. Devyatkin, V.S. Murzin, G.D. Samodurov, and A.B. Zhdanko.