Yepcalphis is a monotypic moth genus of the family Noctuidae erected by Nye in 1975.[1] Its only species, Yepcalphis dilectissima, was first described by Francis Walker in 1858.[2] It is found in Sri Lanka, the Oriental tropics, the Philippines, Sulawesi and the Sula Islands.[3]
The genus is described as: palpi upturned, short, smoothly scaled, and not reaching vertex of head. Antennae simple, somewhat thickened in the male. Thorax and abdomen tuftless. Forewings with non-crenulate cilia and stalked veins 7,8,9 and 10. Hindwings with veins 3,4 and 6,7 from angles of cell.
The species is described as: wingspan of the male is about 24 mm and the female 30 mm. Head and thorax bright ferrous colour. Vertex of head, collar and metathorax with some sulphur-yellowish patches. Abdomen black with narrow white rings, and a white anal tuft. Forewings also ferrous with a yellow patch. There is a series of costal specks and a medial series of spots consisting of a large costal spot, two spots towards the inner margin, and two small spots at the middle. A series of large marginal and cilial spots and two specks can be seen on inner margin. Hindwings black, with a series of white cilial spots. Ventral side variegated with white.[4]
The larvae feed on Vitex species. They are found on the underside of the leaves of their host plant.[5]