Harmologa amplexana is a species of moth of the family Tortricidae. This species was first described by Phillipp Christoph Zeller in 1875. It is endemic to New Zealand and is found from the middle of the North Island down to and including the Otago region in the South Island. It inhabits native forest as well as cultivated gardens. The larval host plants are Muehlenbeckia complexa and Olearia odorata. The larvae make webs of silk amongst the leaf litter of their hosts and feed on the same. The larvae are parasitised by the New Zealand endemic wasp Eupsenella insulana. Adults are commonly on the wing from September until April and during the day can be disturbed from native vegetation. Adults are attracted to light.

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