Bityla defigurata is a moth of the family Noctuidae. It is endemic to New Zealand.
Taxonomy This species was first described by Francis Walker in 1865 using specimens collected by T. R. Oxley in Nelson and originally named Xylina defigurata. Edward Meyrick placed this species in the genus Bityla and synonymised Bityla thoracica with this species. The female holotype is held at the Natural History Museum, London.
Description Walker described this species as follows:
Distribution It is endemic to New Zealand and found in both the North and South Islands.
Behaviour The adults of this species are on the wing from January to March and is attracted to light. They have been collected via a mercury vapour light trap.
Host species The larvae of this species have been reared on Muehlenbeckia australis and Muehlenbeckia complexa.
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