Main characters of Liogenys Guerin-Méneville, 1831. 1 Head and pronotum parts, pronotal posterior corners obsolete 2 Pronotal anterior margin barely produced and posterior corners rounded 3 Pronotal anterior margin straight and posterior corners angled. Abbreviations: alpd= anterior-to-lateral projection distance; at= anterior tooth; atbw= anterior tooth basal width; atd= anterior teeth distance; can= canthus; em= emargination; ey= eye; eyd= eye-to-eye distance; latm= lateral margin of clypeus; latp= lateral projection; lmat= lateral margin of anterior tooth; lpeyd= lateral projection-to-eye distance; ptac= prothorax anterior corner; ptam= prothorax anterior margin; ptpc= prothorax posterior corner.