♂. Antennæ much longer than half the costal margin of the forewings, nearly three-fourths as long as the body, uniform black, at two-thirds of their length expanding into a slender fusiform club, the last third of which is suddenly bent at a right angle; from this point forwards it is rapidly narrowed, but not very acute, nor curved into a hook. Locklet of hair of medium length and of the usual structure. palpi projecting the
full length of the eyes beyond the front, the first joint thickly hair-scaled, the end joint moderately short, conical, almost horizontal.