Liogenys undetermined
Creators: name: Cherman, Mariana A.
name: Basílio, Daniel S.
name: Mise, Kleber M.
name: Frisch, Johannes
name: Smith, Andrew B. T.
name: Almeida, Lúcia M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Melolonthidae
Liogenys
Liogenys undetermined

description: Key to Liogenys species from northern South America and Central America
1. Clypeus bidentate (Fig. 5A–B), only anterior margin of clypeus indented; distal maxillary palpomere evenly convex, without a fovea…................................................................... Liogenys macropelma Bates, 1887
- Clypeus quadridentate (Fig. 1A–D), anterior and lateral margin of clypeus indented; distal maxillary palpomere with an elongate, concave fovea................................................................................ 2
2. Angle between lateral and anterior teeth on clypeus slightly or strongly acute (Fig. 1C); males with lateral expansion along the parameres length entirely visible in dorsal view (Fig. 1F)...................................................... 3
- Angle between lateral and anterior teeth on clypeus right or obtuse (Fig. 1A); males with lateral expansion along the parameres at least partially hidden in dorsal view or absent (Fig. 1E)..................................................... 4
3. Frons and clypeus glabrous (Fig. 1C–D); angle between lateral and anterior teeth on clypeus strongly acute; pronotum moderate coarsely punctate; males with pygidium convex medially (Fig. 7D) and females with pygidium strongly inflated (Fig. 7E)...................................................................... Liogenys quadridentata Blanchard, 1851
- Frons and clypeus with bristles (Fig. 2C); angle between lateral and anterior teeth on clypeus slightly acute; pronotum strongly coarsely punctate; pygidium almost flat, sometimes slightly depressed medially (Fig. 2F)............................................................................................ Liogenys clipeosetosa Cherman, new species
4. Ventrites II, III, and sometimes IV with tubercles medially, tubercles variable in strength (Fig. 8E)...................................................................................... Liogenys schneiderae Cherman, new species
- All ventrites smooth, without tubercles.................................................................... 5
5. Clypeal emargination clearly wider than the dorsal diameter of one eye (Fig. 1B)..... Liogenys quadridens (Fabricius, 1798)
- Clypeal emargination as wide as or narrower than the dorsal diameter of one eye (Fig. 4B)........................... 6
6. Body and pronotum purplish brown, strongly darker than elytra; clypeal emargination strongly angulate; pronotum with anterolateral margin reflexed (Fig. 3C); pygidium without sexual dimorphism, weakly convex in both sexes.......................................................................... Liogenys genieri Smith & Cherman, new species
- Body and pronotum reddish brown, slightly darker than elytra; clypeal emargination rounded; pronotum with anterolateral margin not reflexed, pygidium weakly convex in males and strongly convex to inflated in females....................................................................................... Liogenys granadina Cherman, new species
description: Published as part of Cherman, Mariana A., Basílio, Daniel S., Mise, Kleber M., Frisch, Johannes, Smith, Andrew B. T. & Almeida, Lúcia M., 2021, Liogenys Guerin-Méneville, 1831 (Coleoptera: Scarabaeidae: Melolonthinae Diplotaxini) of northern South America and Central America: taxonomic overview with four new species, pp. 201-226 in Zootaxa 4990 (2) on page 203, DOI: 10.11646/zootaxa.4990.2.1, http://zenodo.org/record/5025886