About Yepcalphis dilectissima (Walker, 1858)
The genus Yepcalphis is characterized as follows: palpi are upturned, short, smoothly scaled, and do not reach the vertex of the head. Antennae are simple, and are somewhat thickened in males. The thorax and abdomen have no tufts. Forewings have non-crenulate cilia, and veins 7, 8, 9, and 10 are stalked. On hindwings, veins 3 and 4, and veins 6 and 7, originate from the angles of the cell.
For the species Yepcalphis dilectissima: the wingspan of males is approximately 24 mm, while females have a wingspan of 30 mm. The head and thorax are a bright ferrous color. The vertex of the head, collar, and metathorax have some sulphur-yellowish patches. The abdomen is black with narrow white rings, and bears a white anal tuft. Forewings are also ferrous, with one yellow patch. There is a series of costal specks, and a medial series of spots that includes a large costal spot, two spots toward the inner margin, and two small spots at the middle. A series of large marginal and cilial spots, plus two specks, are visible on the inner margin. Hindwings are black, with a series of white cilial spots. The ventral side is variegated with white. The larvae of this species feed on Vitex species, and are found on the underside of their host plant's leaves.
