Linoderus Sharp, 1885

Chani-Posse, Mariana Raquel, 2021, A new species of the southern Central American genus Linoderus Sharp (Coleoptera: Staphylinidae: Staphylininae) with a revised key and an updated phylogeny, Zootaxa 5060 (3), pp. 439-446 : 441-442

Key to species of Linoderus Sharp

1. Antennae with antennomeres 4–7 or 4–9 distinctly darker than the basal and apical ones, pronotum reddish brown; 1st antennomere not longer than half of head length; labial palpus with 2nd palpomere longer than 3rd......................... 2

- Antennae with antennomeres 4–11 not distinctly darker than the basal ones, pronotum dark metallic blue; 1st antennomere moderately longer than half of head length, labial palpus with 2nd palpomere about as long as 3rd...................................................................................................... Linoderus smetanai sp. n.

2. Head metallic blue, antennae with antennomeres 4–9 dark brown; maxillary palpus with 4th palpomere 1.5 x about as long as 3rd............................................................................ Linoderus gracilipes Sharp

- Head reddish brown, antennae with antennomeres 4–7 dark brown; maxillary palpus with 4th palpomere 1.8 x about as long as 3rd........................................................ Linoderus alajuelensis Chani-Posse & Solodovnikov