Clemensia albata Packard, 1864

93-0215

Little White Lichen Moth

Identification

Adults

Clemensia albata is a small (FW length 10–11 mm) pale oval-winged tiger moth found in moist forests in our region. The forewing is pale white and smudgy brown-gray peppered with darker scales . The transverse lines are pale gray-brown marked with darker dots, these most evident as black dots on the costa, on the antemedial line in the cell, and on the postmedial line in the fold. The entire terminal line at the base of the fringe is dotted. The orbicular spot is a small black dot and the reniform is spot a black thin irregular triangle.  The hindwing whitish extensively smudged with light gray.

This species is most likely to be confused with micro moths (multiple families that are not included on this site) but can be recognized by wing shape and pattern. Meganola minuscula is similar in size and general pattern, but it has complete black transverse lines. It also occurs in the spring before the flight of Clemensia albata.

Larvae

Larva has short sparse hairs, is cryptically mottled green and black with a thin middorsal white line, and is illustrated by Miller and Hammond (2003).

Habitat

This species is widely distributed across North America in moist forests.  In the Pacific Northwest, it is common to abundant in coastal rainforests, oak woodlands, and in mixed hardwood forests at low elevations west of the Cascades, but appears to be rare in the Rocky Mountain region.

Distribution

Pacific Northwest

This species is widespread in the Pacific Northwest and has been collected most frequently in southern British Columbia, northern Idaho, and the western parts of Oregon and Washington. The most northerly records are from Cedarvale in west-central British Columbia and the Peace River District in the north-east part of the province.

Global

Clemensia albata is widely distributed in eastern North America. It ranges west across boreal Canada to southeastern British Columbia. It has a narrow range along the Pacific Coast south Monterey Bay in west-central California.

Life History

Larvae

This species is a specialist on tree lichens, particularly those that grow on hardwood trees such as Oregon white oak (Quercus garryana). McCabe (1981) reports that the larvae from New York state feed on algae and refuse lichens.

Adults

Adults occur in the summer from late June until early September, but are most common in July. They are nocturnal and come to light.

Economic Importance

None.

Literature

Ferguson et al. (2000)

McCabe TL. (1981)

Miller & Hammond (2003)

Moth Photographers Group