Comprehensive Description

Read full entry

General Description

A medium-size (2.8-3.5 cm wingspan) moth with rusty-orange forewings and grey-brown hindwings with an orange-brown fringe. The forewings are covered with a network of narrow faint dark lines along the veins and marking the normal lines and spots. The claviform, orbicular and occasionally the reniform spot are filled with lighter yellow-orange, but in a few instances the reniform is bright contrasting white. Almost identical to A. interoceanica, but most interoceanica have a white reniform whereas in most Alberta americana it is yellow or orange. The pale filling of the reniform of interoceanica, confined to the outer two-thirds of the reniform, is more extensive in americana. Specimens require an examination of the genitalia for positive identification. Both sexes can usually be examined without dissecting by brushing and looking for the long digitus on the valve of americana males, or the shape of the 7th sternite in females.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© University of Alberta Museums

Source: University of Alberta Museums

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!