Orocrambus ventosus is a moth in the family Crambidae. It was described by Edward Meyrick in 1920. The species is endemic to New Zealand, where it has been recorded in the Tasman Mountains and at Mount Owen. Its preferred habitat is alpine grasslands. Description The wingspan is 25–31 mm. Adults have been recorded on wing from December to February. References Crambinae Moths described in 1920 Moths of New Zealand Endemic fauna of New Zealand Taxa named by Edward Meyrick Endemic moths of New Zealand