Ulopeza idyalis is a species of moth in the family Crambidae. It was described by Francis Walker in 1859. It is found in Sri Lanka,[1] India, and on Borneo and Sulawesi.[2]
The forewings have three large costal yellowish-white iridescent semihyaline spots, the middle one much larger than the other two. The third is subdivided and forms a very incomplete band by means of two hindward dots. The costa and veins are mostly pale luteous (muddy yellow). The hindwings are broadly pale yellow along the costa.[3]