Siccasura transtillata, Volynkin & László, 2021

Volynkin, Anton V. & László, Gyula M., 2021, Siccasura, a new genus for the Afrasura numida (Holland, 1893) species-group, with descriptions of six new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 40, pp. 1-25 : 18

The S. transtillata species-group

Diagnosis. The male genitalia of the species-group ( Fig. 46 ) are similar to those of the S. numida species-group but differ by the configuration of the transtillae which are fused into a rectangular medio-ventral plate bearing two elongate lobe-like processes projecting posteriorly which are densely covered in tiny denticles distally. The cucullus of the species-group is considerably smaller and the sacculus is shorter, basally wider and more tapering distally than in the S. numida species-group. Additionally, the ventro-distal process of the valva is somewhat dilated apically, while it is slightly tapering in the S. numida species-group. The female genitalia of the S. transtillata species-group ( Fig. 60 ) are characterized by the very broad subostial depression of the 8 th abdominal segment (which is much narrower in the S. numida species-group), the large heavily sclerotized and densely spinulose postvaginal plate (which is very small and weakly sclerotized in the S. numida species-group), and the medially curved ductus bursae which is straight in the S. numida species-group. The signa bursae of the S. transtillata species-group are ribbon-like while those are rounded in its congeners.

Figures

Figures 44–46. Siccasura spp.: male genitalia. Depositories of the specimens: 44 in ANHRT; 45 in MWM/ZSM; 46 in MFN.

Figures 55–60. Siccasura spp.: female genitalia. Depositories of the specimens: 55, 56, 58 and 59 in ANHRT; 57 in ZSM; 60 in MFN.