I have arranged the images in accordance with my perception of wing characters: predominent markings, shape, colour, size.
Females often have a wing shape or pattern that differs from the males. I hope some day to also have a thumbnail checklist for the females.
Manduca: white apical patch on forewing; two rows of white dots on abdomen, white on juncture of thorax and abdomen; three yellow-orange marks on each side of abdomen
Manduca: Five to six pairs of yellow-orange marks on each side of abdomen.
Thorax: light grey; slightly darker grey-mixed with yellow tegulae.
Darker grey band across head and thorax juncture.
Basal & postmedian areas much lighter than median area, especially dark in upper half.
Small, almost obscure cell spot.
not sure if huascara is in Guyana
Thorax: light grey; slightly darker wishbone on inner, upper edge of tegulae.
Small reddish-brown patch outside cell. Other lines weak on a generally even light grey ground colour.
Thorax light grey; tegulae slightly darker with black outer edge.
One prominent, thin, distinct, S-shaped, pml on left fw. Other "pmlines" broadly diffuse. Ground colour light grey, often with yellowish cast.