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 female genitalia)

1 Ductus bursae long and slender; lamella postvaginalis concave, without median swellings............................ 2

- Ductus bursae fairly broad, forming cervix; lamella postvaginalis concave, with median swelling...................... 4

2 Ductus bursae as long as diameter of corpus bursae or longer................................................... 3

- Ductus bursae shorter than diameter of corpus bursae ( Fig. 8A )...................................... brevis sp. nov.

3 Corpus bursae basically oval; ductus with sclerification posteriorly ( Fig. 7E ).......................... oblonga sp. nov.

- Corpus bursae spherical; ductus with annular scobination anteriorly ( Fig. 7A )........................... flavifrontella

4 Ductus bursae squat, roughly cylindrical; corpus bursae pouch-like ( Fig. 9A )............................ parva sp. nov.

- Ductus bursae elongated; corpus bursae spherical............................................................ 5

5 Ductus bursae slightly longer than corpus, funnel-shaped: posteriorly broad, narrowing at the corpus bursae junction (Fig. 14 in Birket-Smith 1965).............................................................................. similis

- Ductus bursae shorter than corpus, cylindrical (Fig. 17 in Birket-Smith 1965)............................... duplicata

Figures

FIGURE 7. Archithosia (Acanthosia) species, genitalia. A. A. flavifrontella, female, ventral view, g. sl. n. 1207 MAD, Ipassa, Gabon; B. A. flavifrontella, female, ventral view, teratological form, g. sl. n. 1283 MAD, Ipassa, Gabon; C. A. oblonga sp. nov., holotype, female, ventral view, g. sl. n. 1207 MAD, Ipassa, Gabon; D. Same, dorsal pheromone glands, dorsal view; E. Same, ductus bursae, dorsal view, enlarged; F. Same, signum, ventral view, enlarged. aa anterior apophyses; ca caudal margin of VII sternite; db ductus bursae; ds ductus seminalis; cb corpus bursae; la lamella antevaginalis; lp lamella postvaginalis; pa papillae anales; pg dorsal pheromone glands; pp posterior apophyses; sc sclerifications of ductus bursae; si signum; us Ushaped sclerotization of VIII sternite; VIII t eighth tergite.

FIGURE 8. A. brevis sp. nov., holotype, female, g. sl. n. 1280 MAD, Ipassa, Gabon, genitalia. A. Abdomen, ventral view. B. Dorsal pheromone glands, dorsal view. C. Ductus bursae, ventral view, enlarged. D. Caudal end of ductus bursae, dorsal view. E. signum, ventral view, enlarged. F. Ductus bursae, ventral view, granicula, enlarged. ca caudal margin of VII sternite; db ductus bursae; ds ductus seminalis; cb corpus bursae; la lamella antevaginalis; lp lamella postvaginalis; pa papillae anales; pg dorsal pheromone glands; si signum; VII st seventh sternite; us U-shaped sclerotization of VIII sternite.

FIGURE 9. A. parva sp. nov., holotype, female, g. sl. n. 1218 MAD, Ipassa, Gabon, genitalia. A. Abdomen from V segment backwards, ventral view. B. Dorsal pheromone glands, dorsal view. C. Ductus bursae, dorsal view, enlarged. D. signum, ventral view, enlarged. E. Ductus bursae, dorsal view, granicula, enlarged. ca caudal margin of VII sternite; db ductus bursae; ds ductus seminalis; cb corpus bursae; la lamella antevaginalis; lp lamella postvaginalis; pa papillae anales; pg dorsal pheromone glands; si signum; VII st seventh sternite; us U-shaped sclerotization of VIII sternite.