Indotrichius vietnamensis is a species of beetle of the family Scarabaeidae.Global Biodiversity Information Facility It is found in Vietnam.

Description Adults reach a length of about . The dorsal surface is dull, green and dark orange, with cretaceous white markings. The pronotum is opaque-metallic green, laterally covered with long, scattered, testaceous setae.

Etymology The species name refers to the collecting country.

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