Epichostis barathrias is a moth in the family Xyloryctidae. It was described by Edward Meyrick in 1908. It is found in Sri Lanka.[1]
The wingspan is 13–17 mm. The forewings are dark purplish fuscous with the extreme costal edge pale yellowish in males, except towards the extremities. The markings are blackish, with a slight ferruginous tinge, obscurely edged with ochreous whitish. There is a variable transverse or subtriangular blotch from the dorsum before the middle, reaching three-fourths of the way across the wing. The second discal stigma is rather large and there is a rather narrow straight subterminal fascia, the anterior edge curved inwards on the upper half, the posterior edge not pale margined. There is also a blackish terminal line. The hindwings are dark grey.[2]