Comostola subtiliaria is a moth of the family Geometridae first described by Otto Vasilievich Bremer in 1864. It is a widespread species which is found in Korea and adjacent parts of Siberia, Japan, Borneo, Sumatra, India (north-east Himalaya), South China, Taiwan, Borneo, Sumatra, and Sri Lanka.

The moth is generally green with a discal spot in its hindwing which is more regular and square than other species. The caterpillar is known to feed on Malus, Eurya and Viburnum species.

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