Gouna lineolata is a species of beetle of the family Scarabaeidae. It is found in South Africa (Western Cape).
Adults reach a length of about . They are black. The head, pronotum and elytra are very closely punctate, with the punctures scabrose and partly hidden by a very short, sub-appressed, slightly flavescent pubescence. The pronotum has a narrow median line and a supra-lateral one of white scales, and the outer margin is moderately broadly banded with similar ones. The scutellum is densely squamose and the elytra have a discoidal band of white scales beginning close to the base but barely reaching the median part, and a juxta-sutural one slightly shorter than the discoidal, beginning at about the median part, and obliterated at a good distance from the apex. The propygidium, abdomen, and pectus are clothed with dense silvery-white scales and the pygidium is closely punctured, not scaly or hairy.