Neococytius Hodges, 1971

Pronotum with scaling prolonged to form 2 tufts or crests. Legs more slender than in Cocytius. Foretibia as long as 1st foretarsal segment; foretarsus with comb on segments 3-5, segments 1 and 2 with one more or less incomplete internal row of spines, the external row on segment 2 irregular, the apical spine elongated, the other segments with few spines, mostly apical; 1st segment nearly twice as long as 2nd; segments 2-5 together about 1.5x length of 1st. Mid- and hind-tibiae respectively 1 mm and 2 mm longer than their 1st tarsal segments. Spination of foretarsus almost normal, row 3 of segment 5 dense. Proportional length of tibiae and 1st tarsal segment in the female as in male; 1st segment of foretarsus as long as segments 2-5 together, these being much shorter than in the male. Abdomen upperside with mesial dorsal tufts seldom distinct, represented by small short carinae; yellow lateral patches present on 5 segments. Forewing upperside with normally scaled between veins M₃ and CuA₂. Hindwing without transparent spaces, though the scales of the upperside are narrower than those of the underside in those spaces that are transparent in some species of Cocytius. Hindwing upperside with base black; yellow subbasal area completely separated into 3 patches. 

Male genitalia: Uncus quite short, suddenly curved ventrad in apical third, somewhat dilated before this curve, apex slightly spatulate. Gnathos membranous, without a lobe, thus differing from species of Cocytius and Manduca. Valve comparatively smaller than in Cocytius; there is a strong, sclerotised fold with long and more or less horizontal bristles. Harpe with a flat, quite short, obliquely rounded process that is densely hairy on dorsal apical margin and carries on its external side (towards the valve) a series of sharp, recurved, marginal teeth.Juxta extended, somewhat bone-shaped in lateral view.Aedeagus very slender and produced apically into an obtuse flat lobe that appears pointed in lateral view, and gently curved; no teeth.

Female genitalia: Ostial plate much less sclerotised than in Cocytius, being mainly membranous and regularly folded, the lateral edges stronger; a longitudinal mesial groove runs posteriad from ostium within which is a rod-like, smooth, glossy, well-sclerotised carina that disappears near the distal margin of the plate; on each side of the ostium there is a short, sclerotised, oblique fold.