Diomus cucullifer is a species of beetle of the family Coccinellidae. It is found in Australia (from the Australian Capital Territory. through central New South Wales to southern Queensland).
Description Adults reach a length of about . The head, most of the pronotum and the C-shaped markings on the elytra are yellowish. The pronotum has a dark basal spot. The dorsal surface is covered by whitish pubescence.
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