Orocrambus vulgaris is a moth in the family Crambidae. It was described by Arthur Gardiner Butler in 1877. It is endemic to New Zealand, where it has been recorded from the North Island and South Island. The species prefers habitat that consists of lowland and subalpine grasslands. The wingspan is 21–25 mm. Adults have been recorded on wing from January to April. References Crambinae Moths described in 1877 Endemic fauna of New Zealand Moths of New Zealand Taxa named by Arthur Gardiner Butler Endemic moths of New Zealand