Schematic illustration of the male terminalia of representatives of Amphineurus (dorsal view). A A. (A.) maculosus; B A. (Nothormosia) edentulus; C A. (A.) perdecorus; D A. (Nesormosia) fatuus. — Abbreviations: aed, aedeagus; aed sh, sheath of aedeagus; cgonst, clasper of gonostylus; db clasper, dorsal branch of clasper of gonostylus; goncx, gonocoxite; gonst, gonostylus; lb sh, lateral branch of sheath of aedeagus; lgonst, lobe of gonostylus; ms lobe, mesal lobe of gonocoxite; t9, male tergite IX; vb clasper, ventral branch of clasper of gonostylus.