Nilio domingosi is a species of beetle of the family Tenebrionidae. It is found in Brazil (Amazonas).
Description Adults reach a length of about . They have a rounded, dorsally convex body. The integument is punctate with dense gold pubescence. The colour is yellowish to reddish-brown with the ventral surface reddish-brown.
Etymology The species is named in honour of Domingos Antonio Macari, the late father of the first author.
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