Elachista archaeonoma

Hudson described this species as follows:

The expansion of the wings is about five-sixteenths of an inch. The fore-wings of the male are dark grey densely speckled with paler grey; there are two dull white marks a little before the middle followed by two blackish spots placed on the costa and dorsum and a blackish streak in the disc; there is a marginal series of black dots. The hind-wings are dark grey. In the female the fore-wings are white sprinkled with brown from the base to beyond 4; there is a large blackish-brown blotch near the middle and a smaller blotch at the apex, the two being connected by a slender line in the disc; a number of large black seales is situated on the cilia. The hind-wings are very pale grey.