Gastroserica horiiGastroserica horii is a species of beetle of the family Scarabaeidae. It is found in Vietnam.DescriptionAdults reach a length of about 5.2 mm. They have an oval body. The body, antennal club, middle and hind legs, head, elytra, scutellum and abdomen are blackish dark, while the pronotum is reddish brown. The dorsal surface is dull and nearly glabrous.EtymologyThe species is named after its collector, Michio Hori.