Trioserica tadfaek is a species of beetle of the family Scarabaeidae.BioLib It is found in Laos.
Description Adults reach a length of about 5.2–5.7 mm. They have a reddish brown, oblong body. The frons and pronotum are dark brown and the elytra have more or less extended, dark spots. The antennae are yellow. The dorsal surface is dull and partly iridescent. The surface is almost glabrous.
Etymology The species is named after its type locality, Tad Faek.
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