Hoplopyga brasiliensis is a species of beetles of the family Scarabaeidae.

[1] Hoplopyga brasiliensis can reach a length of about 20–36 millimetres (0.79–1.42 in).

[2] Larvae of this species are termitophilous, living in the nests of Cornitermes cumulans and Diversitermes diversimiles (Termitidae).

[3] They construct pupal chambers with the decaying wood as well as a significant layer of their own feces where they develop.

[2] The feces contains cuticular hydrocarbons that the specific termite hosts use to identify one another, suggesting that this element of chamber construction plays a role in protecting H. brasiliensis larvae from termite patrols.