Description of the female of Spodochlamys marahuaca Jameson & Ratcliffe, 2011 (Melolonthidae, Rutelinae, Anatistini) and additional records for the Brazilian species of the genus

Abstract

The previously unknown female of Spodochlamys marahuaca Jameson & Ratcliffe, 2011 is described and illustrated for the first time based on two specimens collected in the region of the Juruá River, Amazonas state, Brazil. The specimens constitute a new record for Brazil. The identification key for species of Spodochlamys is updated, as well as the geographic distribution of the other two Brazilian species, S. caesarea Burmeister and S. iheringi Ohaus.

Revision of the Neotropical tribe Alvarengiini Frey, 1975 (Coleoptera: Scarabaeidae)

“…Measurements relative to the crenulation of margins and carinae were modified from Bento and Grossi (2019) as follows: Crenulation size: Crenulations were considered thick when larger than 0.02 mm in diameter (usually associated with the presence of setae) and fine when very small (viewed under higher magnification), equal to or less than 0.02 mm in diameter (lacking associated setae). …”