Chrysina expansa (Ohaus, 1913) (Figure 8) This is a little-known species of Chrysina that has been collected only at a few localities in the state of Oaxaca. It has been found in forests dominated by oak trees (Quercus species) at elevations between 2000 and 2300 meters above sea level. Specimens were found in the vicinity of Santiago Clavellinas at elevations between 2100 and 2300 m in pine-oak forests (Five males and five females) during August–September 2018 and July 2019. Our recent discovery of this species in the Sierra Azul represents an interesting new locality record. Ongoing research by Blackaller and Hawks will provide additional information on C. expansa and other closely related species in the Peruviana Group (sensu Hawks 2001).

Published as part of Monzón-Sierra, José, Blackaller-Bages, Julian Federico & Hawks, David C., 2020, Description of a new species of Chrysina Kirby (Coleoptera: Scarabaeidae: Rutelinae) from the Sierra Azul, Oaxaca, Mexico, a new synonymy, and notes on Chrysina species found in the Sierra Azul, pp. 1-7 in Insecta Mundi 2020 (803) on page 6, DOI: 10.5281/zenodo.4565325