Luispenaia, Martinez, 1972

Mondaca, José, Pizarro-Araya, Jaime & Alfaro, Fermín M., 2019, Revision of the genus Luispenaia Martínez (Coleoptera: Scarabaeidae: Melolonthinae: Tanyproctini), with description of three new species from the Atacama Desert, Chile, Zootaxa 4615 (3), pp. 549-562 : 551-552

Key to the species of Luispenaia (based on males, females unknown)

1. Pronotum approximately subhexagonal ( Fig. 12 ). Antennae with 8 antennomeres................................... 2

- Pronotum approximately suboval ( Fig. 11 ). Antennae with 9 antennomeres....................................... 3

2. Lateral margin between clypeal base and ocular canthus projected as external rounded lobule ( Fig. 12 ). Antennal club with 3 antennomeres, slightly longer than antennomeres 2–4; antennomeres 3–4 subequal, antennomere 5 disc shaped ( Fig. 16 )......................................................... Luispenaia paulseni Mondaca, Pizarro-Araya , & Alfaro

- Lateral margin between clypeal base and ocular canthus rounded, no projected as lobule ( Fig. 11 ). Antennal club with 4 antennomeres subequal in length, longer than antennomeres 1–4 combined; antennomere 3 two times longer than antennomere 4; antennomere 5 lamellate ( Fig. 15 )........................... Luispenaia paposo Mondaca, Pizarro-Araya , & Alfaro 3. Clypeus subquadrate or broadly rounded ( Fig. 13 ). Antennal club with 5 antennomeres; antennomere 4 subcylindrical ( Fig. 14 )................................................................................. L. paradoxa Martínez

- Clypeus rounded. Antennal club with 6 antennomeres; antennomere 4 lamellate ( Fig. 17 )....................................................................................... L. atacamensis Mondaca, Pizarro-Araya , & Alfaro

Figures

FIGURES 10–13. Head and pronotum of Luispenaia species. 10, Luispenaia atacamensis; 11, L. paposo; 12, L. paulseni; 13, L. paradoxa. Scale: 0.5 mm.

FIGURES 14–17. Antennal club of Luispenaia species. 14, Luispenaia paradoxa Martínez; 15, L. paposo; 16, L. paulseni; 17, L. atacamensis. Scale: 0.5 mm.