Promecotheca caeruleipennis is a species of beetle of the family Chrysomelidae. It is found in Fiji, the Philippines, Samoa, the Solomon Islands and Tonga.
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Description
Adults reach a length of about 7–8 mm. They are testaceous, with the posterior two-thirds of the elytra metallic blue-green.
Life history
The recorded host plants for this species are Cocos nucifera, Pritchardia pacifica and Livistona species.