Orocrambus machaeristes is a moth in the family Crambidae. It was described by Edward Meyrick in 1905. It is endemic to New Zealand, where it has been recorded from north-western Nelson, south along the Southern Alps to Lake Wakatipu. This species prefers alpine habitat. The wingspan is 19–25 mm. The forewings grey, sprinkled with white and dark brown. The hindwings are greyish white. References Crambinae Moths described in 1905 Moths of New Zealand Endemic fauna of New Zealand Taxa named by Edward Meyrick Endemic moths of New Zealand