Adults are distinguishable from other species in the group, as the
forewings exhibit a less pointed apex. All three transverse lines on them are relatively well developed. The basal line is noticeably angled just below the
costa; the median line is clearly defined in the male
holotype but appears less prominent in the female
allotype; the postmedian line is sharply developed, with a weak angle at the level of
discal spots. Thes discal spots are quite prominent and are visible as having small white
nuclei present on both pairs of wings. On the hindwings, only the median and postmedian lines are present, with the postmedial lines forming a consistently smooth and
convex curve. The underside is primarily whitish, having a grey suffusion in males and more subdued grey tone in females. A strong purple shade is particularly observed in the female specimens.
Male genitalia Males contain a relatively short
uncus, a hook-like structure at the terminal end. The
soccii lobes are prominent, nearly equalling the uncus in length, arising from its dorsal base. Their
genital capsule and its 9th ventral segment, or the
vinculum, is markedly narrower than the
tegumen, and contains a pronounced median suture. Both of these structures are evenly
elliptical. A very narrow transtilla (band of connective tissue at the base of valvae) is present. The pair of
valvae are elongated and tongue-shaped, shorter than other
Cabera species, narrowing pointedly towards the tip. There are clusters of very dense setae on the apical region of these
claspers. The
saccus is lined with a group of fine
setae, with no swelling along the centre of
dorsal margin. The inseminating organ,
aedaegus, is slender and cylindrical, which is quite different from 'spindle-shaped' ones in the related species. spindle-shaped. The sheath that surrounds it, the
vesica, is equipped with three nail-like subapical
cornuti, protruding froim a region that spans approximately one-third of the aedeagus length and covered with numerous
microcornuti. The distinctive genital
morphology suggests that
C. humbloti occupies an isolated taxonomic position within the
Cabera subalba species group. The species demonstrates pronounced
sexual dimorphism, with notable differences in the appearance of males and females. == References ==