Description
The Barred Line Blue has been described as "confined to the forested plains and is usually taken singly". It closely resembles the berenice group of the genus Nacaduba. In C&P4, the authors also added that "most examples can be recognised by having the post-discal spot in space 3 on the forewing below shifted in(wards) very slightly basad of the spot in space 4". The striae are also described as "clear white" in Prosotas aluta.

The upperside of the males of this species is blue with a narrow black border whilst the female is brown with a shining greenish-blue discal patch on the forewing. Another consistent feature that separates this species from the other lookalikes (but must be used in combination with the post-discal spot in space 3 of the forewing), is that the marginal spots, particularly the one next to the tornal orange-crowned eyespot, are arrow-shaped or distinctly pointed. In most individuals, the striae in space 4 of the forewing are also dislocated, and distinctly angled towards the termen.

Habitat & Habits
The Barred Line Blue has an erratic flight and is usually skittish, as is the case with the other species in the Prosotas and Nacaduba genera. Thus far, all the sightings of this species have been in the forested nature reserves, and more often, males are encountered puddling at sandy streambanks on hot sunny days, usually attracted to decomposing animal matter or excretions.

Other Observations
To be detailed.

Early Stages
To be detailed.

Further Reading
To be detailed.