Megalocaria tricolor is a species of beetle of the family Coccinellidae. It is found in Tonga, Samoa, Fiji and on Wallis.
Description Adults reach a length of about . The head and antennae are yellow and the pronotum is yellow, with the base and most of the lateral margins black. The elytra are yellow with black and reddish markings, and with the basal border and suture black. In some specimens, the elytra are yellow with a black basal border and suture.
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