About Palaeosia bicosta Walker, 1854
Palaeosia is a monotypic moth genus, meaning it contains only one species, in the family Erebidae. It was first erected by George Hampson in 1900. The only species in this genus is Palaeosia bicosta, which is commonly called the two-ribbed arctiid or two-ribbed footman. This species was first described by Francis Walker in 1854. It is found in south-eastern Australia. This moth has a wingspan of approximately 30 millimeters. Its larvae feed on lichen.