The Red Base Jezebel bears a resemblance to the Malayan Jezebel (Delias ninus ninus) and can be separated from the latter only by examining the uppersides. The wings are broadly dusted with black and the hindwing is yellow with a red basal patch.

This species was observed in an area within the northern limit of the central catchment nature reserves in the early 90's. It was believed that the individual was a stray migratory specimen, having come from up north in Malaysia during a period when the species was common. This species, like several of the Delias genus, are known to participate in migratory behaviour at times. Though described as confined to the forested hills in Malaysia, the Red Base Jezebel occurs commonly in the plains at irregular intervals, and is a well-known migrant. Biggs (1881) spoke of the species as "a common coastal butterfly, and described it as being found sometimes in an apparently endless stream".

The species has not been seen in the past decade or more and should be looked for in the northern parts of the island where migratory specimens are believed to be able to reach on their journey from Malaysia.

The caterpillar is brown with yellow hairs and each segment has a yellow transverse band. The caterpillars are gregarious and have been found feeding on a species of Nauclea. It is possible that the parasitic Loranthus is also a host plant.

Fah Shin, Chin : "Chin's Butterfly Gallery - Malaysian Butterflies" - Delias pasithoe parthenope

Les, Day : "Delias of the World" - Delias pasithoe

Inayoshi, Yutaka : "Checklist of Butterflies in IndoChina", Specimen comparisons of Delias pasithoe parthenope

Hong Kong Lepidopterists' Society - Red Base Jezebel (Delias pasithoe)