Siccia bicolorata, Romieux, 1937

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 : 83

The S. bicolorata species-group

Diagnosis. The male genitalia structure of the species-group is uniform and the differences between species are relatively minor. The male genital capsule is remarkably different from other congeners and characterised by the following features. The valvae are proximally broad and distally strongly tapered, and basally connected by a commissure. The ventral costal lobe is vestigial but an additional triangular costal process is present on the inner surface of the costa. The cucullus is trapezoidal bearing one or two clusters of robust setae. The membranous lobe is present, narrow and distally directed. The sacculus is short and with one or two ventral processes and an elongate dorsal crest in certain species. Additionally, in certain species, the peniculus bears an elongate and dense cluster of robust setae. The phallus with a strongly elongate ventral carinal plate bearing a cluster of denticles in certain species. The vesica is proximally gelatinous, with sclerotised plates medially, an elliptical or semiglobular distal diverticulum, and a spur-like terminal cornutus. In the female genitalia, both ante- and postvaginal plates are present. The former is broad with a plate-like and smooth medial section and broad and rugose lateral lobes. The antevaginal plate short and broad and with broad, elongate and distally tapered lateral lobes. The ductus bursae is very short. The corpus bursae is elliptical, gelatinous posteriorly and densely covered with spinulose scobination anteriorly, and bearing clusters of strongly elongate spines. The appendix bursae is short, conical and situated laterally.