Sphinx libocedrus achotla Mooser, 1944

Forewing outer edge almost straight, slightly curved at the apex. Head and thorax uppersides and tegula grey. Head with two well defined black lines from the mesial side of the antennae, divergent as far as the collar, where they form a sharp angle with a short black line across on the collar, connecting with the well-defined black lines bordering the tegula dorsally.Metathorax with two white spots, with black lateral marks apically. Abdomen upperside dark gray, one well-defined, longitudinal, median black line; laterally black, with the segments white proximally. Palpi grey, with a conspicuous black mark next to the eye.Abdomen underside grey with a median longitudinal black line wider in the proximally, gradually narrowing towards the end of the abdomen. Forewing upperside dark grey, with a black basal mark, from which a dark, diffusely double line curves toward the cell; discal cell with a long black line with a shorter one anterior to it, continuing as an intervenosal line between veins M1 and M2; further black lines on and between veins, toward the outer edge, the longest, on vein R2, is produced to the apex; an irregular, slightly convex, dark postmedian line runs from between veins R2 & R3 towards the hind margin, with a less distinct parallel submarginal line; a narrow black line on the outer margin. Forewing underside, dark grey, with a black basal point, a black postmedian line is diffusely double halfway, then a thin line curves from it costad; two fine dark submarginal lines, posteriorly parallel with the outer margin, then apical area curved costad more apically; a thin black apical line. Hindwing upperside, black, the base white; a whitish postmedian band, becoming diffuse towards the costal margin; outer margin with pale scales; fringe white with dark points. Hindwing underside whitish-grey, a wide median black line, diffusely double at the hind margin, gradually separating towards the costal margin. Area marginal dark with paler scales at the outer margin; anal angle whitish grey; a thin dark apical line. Similar to those of Sphinx adumbrata and Sphinx chersis.Aedeagus with upper edge straight, not arched as in Sphinx libocedrus libocedrus, as illustrated by Rothschild and Jordan.