The Common Fivering Ypthima baldus is a species of Satyrinae

Satyrinae

Satyrinae, the satyrines or satyrids, commonly known as the Browns, is a subfamily of the Nymphalidae . They were formerly considered a distinct family, Satyridae. This group contains nearly half of the known diversity of brush-footed butterflies...

 butterfly found in Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

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Wet-season form

Male: Upperside brown, both fore and hind wing with terminal margins much darker, and generally with more or less distinct subbasal and discal dark bands. Fore wing with a large, slightly oblique, oval, bi-pupilled, yellow-ringed black, pre-apical ocellus. Hind wing with two postdiscal, round, uni-pupilled, similar but smaller ocelli, and very often one or two minute tornal ocelli also.

Underside similar to the underside in Y. philomela but the ochraceous-white ground-colour paler, tin-transverse brown strice coarser, the ocelli on the hind wing more distinctly in echelon, two tornal, two median, and two pre-apical, and on both fore and hind wing more or less distinctly defined, subbasal, discal and subterminal brown transverse bands.
Female: Differs on the upperside in having the area surrounding or bordering the ocelli on both fore and hind wing paler, closely irrorated with brown striae, the discal transverse band generally clearly defined, and very often both the tornal, and at least one of the apical, ocelli distinct. On the underside it is paler than the male, and has the subbasal, discal and subterminal transverse dark bands more clearly defined.

Dry-season form

Males and females:Upperside very similar to the above, paler; in the female often the ground-colour ochraceous white, closely irrorated with brown striae ; ocelli as in the wet-season form, but those on the hind wing often non-pupilled. Underside also paler than in the wet-season form, the subbasal, discal and subterminal bands on the whole more prominent; ocelli on the hind wing reduced to mere specks.

Wing expanse of 38-46 mm.

Distribution

Sub-Himalayan India from Chamba to Sikkim and Bhutan. Central India and the hills of southern India and the Western Ghats. Assam, Myanmar and the Tenasserim.