Macrodema Fieber, 1860b: 47; 1861a: 180. Type species by monotypy: Pachymerus hirsutulus Scholtz, 1847 (= Rhyparochromus micropterus Curtis, 1836).
Hypnophilus Douglas & Scott, 1865: 208 (syn. Puton, 1869a: 13). Type species by subsequent designation (China, 1941a: 130): Rhyparochromus micropterus Curtis, 1836.
Hypnobius Douglas & Scott, 1875a: 185. Unnecessary new name for Hypnophilus Douglas & Scott, 1865 (proposed because of suspected homonymy with Hypnophila Bourguignat, 1858, Mollusca).