Dorsal, lateral, frontal and declivital view of Coptoborus crassisororcula holotype, 1.8–1.9 mm (A–C, M), C. crinitulus holotype, 1.9–2.5 mm (D–F, N), C. cuneatus syntype, 2.1 mm (G–I, O), C. doliolum holotype, 1.7 mm (J–L, P). All photographs by SMS, D–F, N copyright National Museum of Natural History, Smithsonian Institution, Washington, D.C., published by permission.