The wingspan is about 16 mm. Adults have fine black wavy lines on the hindwings.
The larvae have been recorded feeding on decaying seed pods of Lupinus species (Lupinus albifrons and Lupinus latifolius). They first feed from within a chamber of sparse silk formed in the cavity of a partially intact fruit. Later, they create purse-like cases. Pupation takes place within this case. The larvae have a salmon-orange body and a yellow-brown to red-brown head. The species overwinters in the larval stage within the seedpod of hostplant.