The 2m-cu vein extends downward from the small central cell of the forewing, often referred to as the areolet.
No stigma and 10 veins reaching edge
There is no highly sclerotized, darkened area at the costal margin of the forewing. Ten veins should reach the outer margin of the forweing.
Very few wing veins are present, and usually there is at most a single vein complex composed of the stigmal, marginal, submarginal and postmarginal veins concentrated at the anterior edge of the forewing.