Rhyparochromus Hahn, 1826: pl. 17. Type species by monotypy: Cimex pini Linnaeus, 1758.
Pachymerus (non Lepeletier & Serville, 1825): Schilling, 1829: 37, 64 (partly).
Aphanus (non Laporte, 1833): Brullé, 1836: 385 (partly).
Melandiscus Stål, 1872c: 57 (as subgenus of Pachymerus; syn. China, 1943: 242). Type species by subsequent designation (China, 1943: 242): Pachymerus vulgaris Schilling, 1829.