Differs from P. turgidus by antennal flagellum being densely setose ventrally and sparsely dorsally, eyestalk proportionately long and more slender, nearly as long as shield and hand with dark corneous teeth only at tips of fingers. Brood pouch of female subrectangular.
SizeShield length: male 12 mm, female 9.4 mm.
ColourCarapace red-brown with 3 irregular lighter stripes on shield and 1 on each branchial area. Chelipeds white with orange, light and dark red bands; fingers pink and white with black tips. Walking legs rust and white, with black claws. Abdomen mottled red and white. Antennule white with dark red streaks and flagellum red ventrally. Antenna pink and red base; flagellum dark red with light areas at joints and setae light coloured. Eyestalk white with dark red, almost black stripes dorso-laterally and ventrally; cornea black.