Bicyclus ena, the grizzled bush brown, is a butterfly of the family Nymphalidae. It is found from KwaZulu-Natal to Eswatini, Mpumalanga, from Zimbabwe to Kenya and in Uganda.[1]
The wingspan is 38–42 mm for males and 43–48 mm for females.The wings above are uniform dark grey-brown, the forewing with two very distinct, black, white-pupilled eye-spots ringed with dull yellow, a larger one in cellule 2 and a small one in cellule 5.[2] There are two extended generations per year. The wet-season form is on wing in spring and summer and the dry-season form in autumn and winter.[3]
3. Halali, S., Brakefield (el at.) (2020). To mate, or not to mate: The evolution of reproductive diapause facilitates insect radiation into African savannahs in the Late Miocene
4. WINDIG, J. J., BRAKEFIELD,(el at.) (1994). Seasonal polyphenism in the wild: Survey of wing patterns in five species of Bicyclus butterflies in Malawi.