Type species. Mithraculus coronatus White, 1847 [Type locality: West Indies].
Remarks. Mithraculus is amphi-American in distribution and is currently formed by nine species: Mithraculus cancasense Türkay, 1967) [Mithrax (Mithraculus)] (EP); M. cinctimanus Stimpson, 1860 (WA); M. coronatus White, 1847 (WA); M. coryphe (Herbst, 1801) [Cancer] (WA); M. denticulatus (Bell, 1835) [Mithrax] (EP); M. forceps A. Milne-Edwards, 1875 (WA); M. nodosus (Bell, 1835) [Mithrax] (EP); M. rostratus (Bell, 1835) [Mithrax] (EP); and M. sculptus (Lamarck, 1818 [Maia] (WA). Mithraculus ruber Stimpson, 1871a (WA), has been transferred to Teleophrys (see below) by Windsor & Felder (2014).