Synona obscura, is a species of lady beetle found in India (Karnataka, Kerala, Tamil Nadu) and Sri Lanka.
Description Adults reach a length of about . They have a broad, subcircular body. The head and pronotum are bright yellow-orange and the elytra are black. The ventral surface is yellow-orange.
Biology It is a predator of several aphids and mealybugs such as, Coptosoma ostensum, Megacopta cribraria, and Aphis craccivora. Host plants include: Butea monosperma, Lablab purpureus, Cajanus cajan, Sesbania grandiflora, Santalum album, Trichosanthes cucumerina, Brassica oleracea, Anacardium occidentale, and Trewia.
Larvae occasionally parasitized by Nothoserphus mirabilis and Homalotylus flaminius.
Etymology The species name refers to the fact that it has remained unrecognised as a distinct species, though commonly collected.
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