Chionaema pusilla (Wileman, 1910)

Volynkin, Anton V. & Černý, Karel, 2018, Revision of the genus Nephelomilta Hampson, 1900, with descriptions of twelve new species and two new subspecies (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4472 (3), pp. 401-451 : 416

The N. pusilla species-group

Diagnosis. The coloration and the pattern are similar to those of the N. sumatrana species-group. The male genitalia of the N. pusilla species-group are characterized in the presence of both, the apical costal lobe and the ventral-apical costal process, the presence of the distal membranous lobe of the valve, the narrow trigonal ampulla, the presence of the subapical saccular process, the elongated basal section of the aedeagus vesica, the absence of the subbasal diverticulum of the vesica (present only in N. martini sp. nov.). The female genitalia are similar to those of the N. effracta and the N. klapperichi species-groups, but biffer from those of the N. effracta species-group in the significantly longer and broader antevaginal plate, the narrower ostium bursae with strongly sclerotized margins, and the more sclerotized and curved ductus bursae; from the N. klapperichi species-groups they differ in the absence of subostial lobes of the ductus bursae.