O. Merkl szerk.: Folia Entomologica Hungarica 68. (Budapest, 2007)

The male of Penaicisalia amatamba (Fig. 3) is distinguished externally from P. balzapamba (Fig. 5) by its larger scent pad in the dorsal surface of the forewing, rounder hindwing shape and the more greyish basal disc of the hindwing ventral surface. Internally the caudal extension of the P. amatamba male genital valva is a very long process instead of a minute triangular tip found in P. balzapamba. The male of P. amatamba is distinguished from P. ismaeli (Fig. 7.) by the former being larger, having a more extended wingshape, and the dorsal wing surfaces bluish purple or lustrous blue with iridescence. The female of P. amatamba (Fig. 4) has a silver blue dorsal colouration in the basal area instead of the brown female wing surface of P. balzapamba (Fig. 6) or the reddish brown female of P. ismaeli (Fig. 8). Description - Male. Wings. Forewing length 12 mm (measured from forewing apex to the erection of the cubital vein at thorax). Shape: Forewing costal margin approximately straight, distal margin medially concave creating a bulbous apex. Hindwing anal margin convex, apex rounded, distal margin rounded, tornus elongated forming a minute and pointed anal lobe. Fringes on both wings formed comprised by long reddish brown scales. Dorsal surface: Both wings with pale lavender blue ground colour with broad black border ill defined distally, costal margin black. Forewing scent pad large (approximately 1/2 length of discal cell length) and embracing the whole width of discal cell end; fringes brown. Ventral surface: Forewing ground colour light brown, postmedial band slightly irregular with reddish proximal and white distal edge; submarginal elements appear as four independent well defined spots. Hindwing anal fold gray at the basal area with a medial reddish brown line; discal spot reddish brown and faint; discal margin appears as a straigth medial line extending caudally from costa to vein CuA2 and then turning sharply towards anal margin forming a pattern with 90 degrees angle; basal disc grayish except a ligth brown illuminated medial area above vein 3M; submarginal spots faint and reddish brown; marginal band with dark brown intercellular spots; fringes brown. Body: Head and thorax dark brown, abdomen dark brown dorsally and orange ventrally. Genitalia: Eighth abdominal tergite simple and rectangular; caudal extension of valvae in lateral view approximately 1/2 length of valvae and with a smoothly rounded dorsal margin at basal portion; uncus with dorsal square shaped medial indentation in approximately 1/2 length of dorsal capsule; saccus triangular with a narrow square shaped distal tip; aedeagus conspicuously long and narrow, with a shallow concave posterior half, and a blunt tip; distal portion of aedeagus having two cornuti: ( 1 ) medial cornutus flattened, concave and serrate-tipped rod positioned dorsally in posterior third of aedeagus, and (2) posterior cornutus short, anteriorly tapered, convex and serrate, similar in shape to an artichoke (Fig. 22). Female. Wings. Similar to male but it differs as follows: Forewing rounder; hindwing anal lobe rounder. Dorsal surface: Both wings iridescent silver-blue with ill-defined distal part and accompanied by a relatively wide black border (approximately 3-4 mm) in submarginal areas. Ventral surface: Ground colour in both wings light brown; medial and submarginal bands on both wings as in male; basal disc grayish and spreader reaching the anal lobe.