There are usually a few small dark spots in the basal area.

It is multiplied by the number of trees on the plot to give basal area per acre.

The basal area is black, decorated with silver gray scales.

Some females have amber in basal areas of their wings.

Adults are yellow with brown basal and marginal areas on the forewings.

Absolute terms include the basal area or trees per acre.

High intensity tone bursts stimulate more of the basal areas.

The basal area of both wings contains many red spots.

The basal area is a mixture of white, pale-ferruginous and brown scales.

The underside hindwing does not have a spot in the basal area of 7.