The presently monobasic genus Peltidopeplus Poppius, 1912, is redescribed. Its type species, P. annulipes Poppius, 1912, and P. yasunagai n. sp. are studied. The genital structures of both sexes of these Papuan taxa are illustrated. The new species, whose types are preserved in the United States National Museum in Washington, is characterized notably by the lesser development of the scutellar convexity, by the toothed chitinous phallic armature and by the absence of a lateral structure on the socle of the posterior wall of the vagina. A lectotype is designated for P. annulipes in the collections of the Zoological Museum of the University of Helsinki. Chimsunchartella schwartzi n. gen., n. sp. is described to accommodate a taxon from Western Australia found in the collections of the Muséum national d’Histoire naturelle in Paris, sharing with Peltidopeplus a turgid scutellum, but differing from it notably by its rudimentary pilosity, its furrowed and finely marginated vertex, and the shape of the anterior part of its chitinous phallic armature.
Taxonomy, lectotype designation, new species, new genus, Chimsunchartella, Peltidopeplus, Heteroptera, Miridae, Mirini.