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We collected the longhorn beetle Heteroglenea nigromaculata (Thomson, 1865) (Cerambycidae, Lamiinae, Saperdini) for the first time in India. The presence of this species in Kerala, South India, considerably extends its distribution to the west. Though H. nigromaculata is known from adjacent countries such as China, Thailand, and Myanmar, it has not been documented from North or Northeast India. Adults were found in association with the Indian Screw Tree, Helicteres isora L. (Sterculiaceae). We include photographs of living H. nigromaculata and brief comments on morphology and colouration.