Acanthosia, Kruger, 2015

Durante, Antonio, Potenza, Luigi & Pellegrino, Gabriele, 2025, Revision of the subgenus Acanthosia Krüger, 2015 in the genus Archithosia Birket-Smith, 1965, with a description of four new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Zootaxa 5659 (3), pp. 407-425 : 412

Key to the species of the subgenus Acanthosia (based on male genitalia)

1 Male genitalia with thick acute process (cp in Fig. 6A ) in middle of dorsal margin of ala valvae............. flavifrontella

- Ala valvae without process on dorsal margin, with acute dorso-basal process (dp in Fig. 6C ).......................... 2

2 Processus basalis plicae roundish, flat (Fig. 15B in Birket-Smith 1965).................................... duplicata

- Processus basalis plicae digitiform (pb in Fig. 6C )........................................................... 3

3 Dorso-basal nearly straight pointed process on the valva (pp in Fig. 13B in Birket-Smith 1965)................... similis

- Dorso-basal pointed process, bent mesad near its base, on the valva (dp in Fig. 6C )........................... tryphosa

Figures

FIGURE 6. Archithosia (Acanthosia) species, genitalia. A. A. flavifrontella, male, ventral view, g. sl. n. 1245 MAD, Ipassa, Gabon. B. Same, aedeagus, lateral view, enlarged. C. A. tryphosa, holotype, male, ventral view, Arctiidae genitalia slide n. 44 BMNH, Ruwenzori Range, Bwamba Pass, Uganda. D. Same, aedeagus, lateral view. E. A. tryphosa, allotype, female, ventral view, Arctiidae genitalia slide n. 45 BMNH, same data as holotype.