Siccia foya

Volynkin, Anton V., 2023, Contribution to the knowledge of the genus Siccia Walker (= Aemene Walker, syn. n.) in the Afrotropics with descriptions of seventy-three new species, three new subspecies, and a check-list of Asiatic taxa of the genus (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 64, pp. 1-184 : 45

The S. foya species-group

Diagnosis. The male genitalia ground plan of the species-group is reminiscent of the S. duodecimpunctata species-group but distinguished by the broader and heavily sclerotised costa bearing a robust ventral process, the hook-shaped cucullus bearing one or two claw-like processes, the medially angled ventral margin of the valva, and the vesica having considerably larger diverticula. The female genitalia of the two species-groups are conspicuously different and those of the S. foya species-group are characterised by the heavily sclerotised antrum (it is weakly sclerotised in the S. duodecimpunctata species-group), the broad and heavily sclerotised lateral subostial lobes (they are narrow, weakly sclerotised and rugose in the S. duodecimpunctata species-group), the large and membranous corpus bursae having a sclerotised plate at the junction with the ductus bursae (the corpus bursae in the S. duodecimpunctata species-group is small and densely covered with minute spinules), and the strongly elongate, tubular and curved appendix bursae (it is very short and semiglobular in the S. duodecimpunctata species-group).