♂︎ 17 mm. Head and thorax yellowish- white, metapleura with an oblique black streak, frontal cone of scales moderately long. Palpi 3+1⁄2, white, apical 2⁄3 externally irrorated with dark fuscous. Abdomen pale whitish-yellow, with a black lateral dot near base, and a few black lateral scales posteriorly. Legs white, banded with dark fuscous. Forewings cleft from 3⁄4, upper segment rather narrow, apex produced, pointed, lower segment much broader, posteriorly dilated ; whitish, tinged with pale yellow ; costa towards base shortly strigulated with fuscous irroration ; a small triangular fuscous spot irrorated with dark fuscous on costa before fissure, not reaching across first segment, and a smaller similar mark on costa between this and apex : cilia ochreous-whitish, spotted with fuscous round lower angle of first segment, and upper angle and termen of second, with a small black scale-tooth on dorsum at 2⁄3. Hindwings reddish-fuscous ; cilia whitish, slightly reddish-tinged, with a blackish basal mark on lower half of termen of first segment, and mere traces of black scales in middle of dorsum of third segment.[3]
Hudson noted that when resting P. campsiptera holds its forewing second digit downwards and almost at right angles to the first digit.[4]