Pseudacraea lucretia, the false diadem or false chief, is a butterfly of the family Nymphalidae. It is found in Africa. Description . lucretia group. The species of this group are easy to separate from those of the preceding groups by the black, white-striped palpus and by the absence of the black spots at the base of the forewing. Beneath, however, they are very different. The sexes are coloured and marked almost alike. - Ps. lucretia is a widely distributed species and forms several local races. All the forms are black with white or yellow markings. The forewing has a hindmarginal spot, reaching at most to vein 2, a median band composed of 4 (or 5) spots, one at the apex of the cell, one each at the base of cellules 3 and 4 and one in the middle of cellule 2, and a subapical band of 2 spots in cellules 5 and 6. The hindwing has a broad median band and both wings usually before the distal margin two small punctiform spots or dashes in each cellule. The forewing is lighter beneath than above, black-grey with a thick black longitudinal streak in the cell, a triangular black spot at the base of cellule 2 and in the marginal part with black streaks on the interneural folds; the light markings as above. Hindwing beneath yellowish at the base with 6 or 7 rounded black spots, then at least to the middle white or yellowish and at the distal margin more or less broadly darkened with black veins and folds and more distinct submarginal spots than above.- lucretia Cr. (46 a). The markings on the upper surface white or white-grey; the hindmarginal spot of the fore wing is almost as long as its breadth at the hindmargin, usually reaches vein 2, but is anteriorly rounded or cut off obliquely; spots 2 and 3 in the median band are sharply defined and moderately large, but the other two much smaller and sometimes dull grey; the median band of the hindwing is of almost uniform breadth, straight-edged, 6-7 mm.in breadth and at the inner margin only reaching vein 1 b; the black basal part does not reach the beginning of vein 2. Sierra Leone to Angola and Uganda. -protracta Btlr. only differs in having the median band of the hindwing and the hindmarginal spot of the forewing (at least at the hindmargin) yellowish. Congo.