Mythimna (Hyphilare) formosana Butler

Aletia formosana Butler, 1880, Proc. zool. Soc. Lond., 1880: 675.

Leucania adusta Moore, 1881, Proc. zool. Soc. Lond., 1881: 335.

Sideritis conferta Warren, 1913 In Seitz, Gross-Schmett. Erde 11:94.

Aletia formosana Butler; Calora, 1966: 686; Holloway, 1976: 9.

Diagnosis

The ground colour of the forewings of this and Mythimna semicana Pagenstecher is pale yellow, with the darker markings reddish. The only reliable way of distinguishing formosana from Mythimna semicana Pagenstecher is by examination of the male genitalia: the sacculus is elongate rather than rounded formosana, and the cucullus is narrower, more strongly asymmetrical and with a costal process or digitus.

Geographical range

Indian Subregion to Japan, Taiwan, also Borneo, Philippines and Sulawesi, with ssp. conferta Warren in Queensland.

Habitat preference

On G. Kinabalu the species was taken between 1000m and 2000m.

Genitalia: