Barsine flavodiscalis (Talbot, 1926)

Volynkin, Anton V. & Černý, Karel, 2019, A review of the Barsine inflexa Moore, 1878 and the B. flavodiscalis (Talbot, 1926) species-groups, with descriptions of six new species from Indochina, India and China (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4668 (4), pp. 543-561 : 550

The Barsine flavodiscalis species-group

Diagnosis. The species-group is closely related to the inflexa species-group, but its male genitalia differ by the uncus being evenly narrow (that is basally swollen and broadened in the inflexa group), the more sclerotized scaphium, the narrower tegumen, and the well-developed medial saccular process (that is absent or very small and weakly sclerotized in the inflexa group). The female genitalia differ from those of the inflexa group by the broader ductus bursae without a separated antrum, and the stronger spinulose scobination of corpus bursae.

Description. External morphology of adults. Small moths with forewing length 11–13 mm in males and 12.5–15.5 mm in females. Antennae of both sexes ciliate, with longer cilia in males. The sexual dimorphism is expressed only in the larger size of females. Coloration and pattern are similar to those of the inflexa group, but area of connection of antemedial and medial transverse lines not enlarged. Male genitalia. Uncus long, evenly narrow, curved, apically pointed. Tuba analis moderately broad; scaphium narrow, moderately sclerotized; subscaphium as small setose area. Tegumen shorter than valva, narrow. Juxta shield-like. Vinculum short, U- or V-shaped. Valva elongated, its apex slightly curved dorsally. Costa curved medially, with a short process directed dorsally (in B. cruciata and B. siberuta reduced to a small protrusion). Distal membranous lobe of valva small. Sacculus narrow, sclerotized, with a well-developed medial process, which may be trigonal and directed dorsally ( B. hreblayi and B. flavodiscalis ) or long, narrow, curved and apically pointed ( B. cruciata and B. siberuta ). Distal saccular process short and blunt ( B. hreblayi and B. flavodiscalis ) or shortly trigonal ( B. cruciata and B. siberuta ). Aedeagus narrow, curved ( B. hreblayi and B. flavodiscalis ) or straight ( B. cruciata and B. siberuta ). Vesica with several elongated diverticula bearing clusters of granulation and small cornuti or spinules ( B. hreblayi and B. flavodiscalis ) or a long spine-shaped cornutus on a dentate base ( B. cruciata and B. siberuta ). Basal plate of vesica ejaculatorius short, stick-like ( B. hreblayi and B. flavodiscalis ) or trigonal ( B. cruciata and B. siberuta ). Female genitalia. Ovipositor short and broad. Papillae anales large, trapezoidal, with rounded corners. Apophyses long and thin, apophyses anteriores of equal length with apophyses posteriores ( B. cruciata , B. siberuta and B. flavodiscalis ) or shorter ( B. hreblayi ). Ostium bursae broad. Ductus bursae broad, dorso-ventrally flattened, sclerotized posteriorly and membranous at the connection with corpus bursae. Corpus bursae sack-like, with strong spinulose scobination, in some species with a postero-lateral moderately sclerotized diverticulum ( B. cruciata and B. siberuta ). Appendix bursae broadly conical, membranous, situated postero-laterally.