Abstract
The subgenus Parapisa of the genus Apisa is reviewed based on the examination of 104 specimens. Apisa (P.) cinereocostata and A. (P.) subargentea are redescribed and their intraspecific variation is analysed in detail. A new species A. (P.) asipa, similar in the general coloration to other Apisa taxa, but very distinctive in the male genital morphology and the shape of the wing scales, is described from Cameroon and Nigeria. Apisa (P.) cinereocostata is hypothesized to be a widespread, but highly polymorphic taxon with significant variation in body size, intensity of grey coloration, and the proportions and shape of certain morphostructures of male genitalia. Determination keys and extensive illustrations of the variation are provided to enable proper identification of specimens.
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