Gastroserica carolusi is a species of beetle of the family Scarabaeidae.BioLib It is found in Laos.
Description Adults reach a length of about 7.1–7.8 mm. They have an oval body. The legs are dark brown and the elytra and dorsal surface are black with a greenish shine. There is a brown spot on each side of the pronotum. The dorsal surface is dull, with minute, moderately dense setae and sparse, long, erect setae interspersed.
Etymology The species is named after one of its collectors, Carious Holzschuh.
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