Melanotrichus Reuter, 1875g: 151 (as subgenus of Orthotylus). Type species by subsequent designation (Kirkaldy, 1906a: 127): Phytocoris flavosparsus C.R. Sahlberg, 1841.
Allocotus Puton, 1874a: 218 (junior homonym of Allocotus Fischer de Waldheim, 1838, Pisces) (as genus). Type species by monotypy: Allocotus rubidus Puton, 1874.
Halocapsus Puton, 1878a: 41 (syn. Carvalho & Leston, 1952: 238). New name for Allocotus Puton, 1874.