Archithosia (Acanthosia) Kruger 2015

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 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