Lycini, Fabricius, 1787

González-Ramírez, Mireya, Zaragoza-Caballero, Santiago, Morrone, Juan J. & Ochoterena-Booth, Helga, 2025, A phylogenetic analysis based on morphology reveals the placement of Lycomesus Zaragoza-Caballero & González-Ramírez, 2019 and Lyconotus Green, 1949 within Lycini (Coleoptera: Lycidae), with the description of a new genus from North America, European Journal of Taxonomy 1022, pp. 202-242 : 222

Key to genera of Lycini from North America

1. Length of antennomere III almost the same as antennomere IV ( Fig. 4G); head with rostrum longer than wide, but very slender at base; subquadrangular or oval labrum; trochanters with acute internal angle; metatibial spurs short, and acute ( Fig. 6F) ............................................................................. 2

– Length of antennomere III longer than antennomere IV ( Fig. 4E–F); head with rostrum of variable length, but slightly to strongly widened at base; semi-circular to semi-square labrum; trochanters with blunt internal angle; metatibial spurs long, and apically variable shape ( Fig. 6G) .................. 3

2. Labrum with truncated anterior margin; in males, last abdominal sternite and phallus are curved at an angle of 45°, without a pair of thorns in the middle part of phallus, without modifications to receive the parameres, which are rounded ( Fig. 7E) ....................................................................................... .............................................................. Lycomesus Zaragoza-Caballero & González-Ramírez, 2019

– Labrum with rounded anterior margin; in males, last abdominal sternite and phallus are curved at an angle of 90° ( Fig. 6P), with a pair of thorns in the middle part of phallus, phallus modified to receive parameres, these are triangular ( Fig. 7K) ....................................... Lyconotus Green, 1949 stat. rev.

3. Elytra with sexual dimorphism, male considerably dilated in middle part, while female with moderately dilated elytra ( Fig. 9D–E); radiomedial loop broadly curved ( Fig. 5M); metatibial spurs unequal (inner acute, outer slightly broader apically and bluntly rounded), and situated close together at the base ( Fig. 6E) .................................................................................. Neolycus Bourgeois, 1883

– Elytra lacking sexual dimorphism ( Figs 9F–G, 10A, 11A); radiomedial loop slightly curved ( Fig. 5N); metatibial spurs equal, acute, and with a considerable distance between them at the base ( Fig. 6E, G) ....................................................................................................................................... 4

4. Males with concave or emarginate posterior border on the seventh sternite; thorns on the phallus present or absent ( Fig. 7C, F, I) .............................................................. Rhyncheros LeConte, 1881

– Males with convex posterior border on the seventh sternite; thorns on the phallus absent ( Fig. 11C– E) .................................................... Lycorectus González-Ramírez & Zaragoza-Caballero gen. nov.