Halmenus is a genus of grasshoppers in the subfamily Cyrtacanthacridinae with species found in Galápagos Islands, Ecuador.Scudder, S.H. 1893. Bull. Mus. comp. Zool. Harvard Univ. 25:17.
Species The following species are recognised in the genus Halmenus: Halmenus choristopterus Snodgrass, 1902 Halmenus cuspidatus Snodgrass, 1902 Halmenus eschatus Hebard, 1920 Halmenus robustus Scudder, 1893
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