Cechenena helops
An unmistakable grey-green species with a characteristic large oval olive-brown spot at the base of the forewing upperside. Labial palp segment 1 with a sharply defined apical cavity. Forewing outer margin very weakly scalloped; apex less acute and produced than in Cechenena helops papuana. Abdominal segments 1 and 2 with a lateral black patch. Underside of abdomen less white than in Cechenena helops papuana. Forewing upperside with a large, oval, basal brown patch; discal spot with an additional black spot just anterior to it; apex with a broken black line distally bordering an olive-brown costal patch that ends abruptly at vein M1. Forewing underside similar to Rhagastis velata; postmedial costal spot smaller than in Cechenena helops papuana. Hindwing upperside pale tornal patch larger than in Cechenena helops papuana. Hindwing underside with dots on veins more distal than in Cechenena helops papuana.
Male genitalia: Uncus apically flat, truncate, slightly sinuate. Gnathos compressed, outline of ventral surface strongly curved in lateral view. Harpe almost cylindrical, 3-4x as long as medially broad, much longer than in Cechenena helops papuana, apex obtuse, rounded. Phallus apical processes much shorter than in Cechenena aegrota, but longer than in Cechenena helops papuana.
Female genitalia: Lateral margins of sterigma quite sharply raised. Ostium bursae large, edges weakly raised in a lyre-shape.