Barsine flavodiscalis

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

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Barsine flavodiscalis


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.