What is "argyrostola"

Argyrostola is a genus of moths of the Crambidae family. It contains only one species, Argyrostola ruficostalis, which is found in Brazil (Rio de Janeiro) and Panama.

The wingspan is 32-44 mm. The forewings are silvery white, with reddish brown costal and submarginal scales. Both wings have a prominent curved submarginal series of specks.