''Orocrambus crenaeus'' is a moth in the family Crambidae. It was described by Edward Meyrick in 1885. It is endemic to New Zealand, where it is known from the

South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...

. The habitat consists of alpine grasslands. The wingspan is 31–38 mm. Adults have been recorded on wing from December to February. Adults of this moth are known to pollinate '' Brachyscome sinclairii''.

References

Crambinae Moths described in 1885 Moths of New Zealand Endemic fauna of New Zealand Taxa named by Edward Meyrick Endemic moths of New Zealand {{Crambinae-stub