Key to the species of the Afrotropical Porphyrosela based on external characters and host plants

1. Antennal tips white, four costal strigulae on forewing......................................................... 2

– Antennal tips of the same colour as remaining part of flagellum, three costal strigulae on forewing..................... 3

2. Ground colour of forewing equally unicolous ochreous; larvae feed on Teramnus spp. and Vigna spp. [ Fabaceae] (Figs 120–122)....................................................................................66. teramni

– Ground colour of forewing speckled with blackish scales; larvae feed on Glycine max (L.) Merr. and Vigna sp. [ Fabaceae] (Figs 118, 119)............................................................................ 65. homotropha

3. Ground colour of forewing equally unicolous ochreous; larvae feed on Vigna luteola (Jacq.) Benth [ Fabaceae] (Fig. 117)............................................................................................... 64. gautengi

– Ground colour of forewing with dense irroration of brownish scales; larvae feed on Desmodium adscendens (Sw.) DC. [ Fabaceae] (Fig. 116).......................................................................63. desmodivora

Key to the species of the Afrotropical Porphyrosela based on male genitalia*

1. Tubular anellus shorter than aedoeagus, tegumen about as long as valva.......................................... 2

– Tubular anellus as long as aedoeagus enclosing it entirely, tegumen slightly longer than valva (Figs 287–291)....66. teramni

2. Valva bar-shaped with rounded apex; aedoeagus broad, basally bearing sclerotized cornutus, apex of vesica with sharp barb (Figs 283, 284).............................................................................. 64. gautengi

– Valva bar-shaped, slightly dilated apically, with somewhat angulated, but not round apex; aedoeagus straight, with narrow tip, distally open, cornuti absent (Figs 285, 286).................................................... 65. homotropha

* male genitalia of P. desmodivora unknown.