The male is significantly larger than the female, but the patterns of the two sexes are similar. The male reaches a wingspan of 17 cm[1]. On the obverse, the wings are black or dark brown. The forewings are quite elongated, they are orange at the base and have white macules. The hindwings are rounded, white or cream in the basal area and crossed by black veins while the rest of the wing is studded with white macules. The underside is similar but the wings are slightly lighter and the orange part of the forewings is more extensive. The thorax and head are black and dotted with white macules, the abdomen is black above and white below and on the sides.
This species mimics the appearance of Tirumala formosa and more precisely of Tirumala formosa morgeni, a species of poisonous butterfly[
Taxonomy
Papilio rex is a member of the dardanusspecies group. The members of the clade are:
↑ Ackery, P.R., Smith, C.R., Vane-Wright, R.I. 1995. Carcasson's African Butterflies: An annotated Catalogue of the Papilionoidea and Hesperioidea of the Afrotropical Region. British Museum (Natural History), London: i-xi, 1-803. ISBN 978-0-643-05561-2
Carcasson, R.H. 1960 "The Swallowtail Butterflies of East Africa (Lepidoptera, Papilionidae)". Journal of the East Africa Natural History Societypdf Key to East Africa members of the species group, diagnostic and other notes and figures. (Permission to host granted by The East Africa Natural History Society)
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