The N. klapperichi species-group

Diagnosis. The coloration and the pattern are similar to those of the N. sumatrana species-group. The male genitalia of the N. klapperichi species-group are similar to those of the N. effracta species-group, but differ in the narrower distal section of the costa, the significantly narrower apical process of the costa, the presence of the distal membranous lobe of valva, and the presence of one or several denticles on the ventral margin of the ampulla. The female genitalia of the N. klapperichi species-group are characterized in the presence of the subostial lobes of the ductus bursae.