Microserica thai is a species of beetle of the family Scarabaeidae. It is found in Laos and Thailand.
Adults reach a length of about 3.7âÂÂ4.7 mm. They have a broad, oval, moderately convex body. They are uniformly black or (very rarely) brown. The surface is dull (partly with a greenish or coppery iridescent sheen) and glabrous, except for the legs and the anterior labroclypeus.