Bytharia uniformis Swinhoe

Bytharia uniformis Swinhoe,1902, Trans. ent. Soc. Lond ., 1902: 643.

Silvaspica balatensis Schultze, 1925, Philipp. J. Sci . 28: 4.

Diagnosis

The very pale orange-yellow wings with grey borders and forewing costa render this species unmistakable.

Geographical Range

Sundaland, Philippines, Sulawesi.

Habitat Preference

The species is uncommon. Only three specimens were taken during the Mulu survey, one in Gua Payau, a broad forested well in an area of limestone with caves, and the other two at 500m (hill dipterocarp forest) and 1000m (lower montane forest) on the Mulu transect.

Taxonomic Note

H.S. Barlow and S.K.L. Hok have reared Bytharia uniformis from Cryptocarya laevigata (Lauraceae) in Peninsular Malaysia. The larva (Plate 10) has the head, thorax and segments from A6 to the anal segment a dull orange with a few blackish bars. The segments in between, A1-5, have blackish squares over their dorsal parts that are surrounded by white borders, and there is a diffusely white, narrow, dorsal line that bisects them. The pupa was supported by a fine abdominal girdle as in other Cosymbiini.

Genitalia: