Comprehensive DescriptionRead full entry
MATERIAL EXAMINED. — Southeastern Atlantic. VALDIVIA 1: stn P-5, Valdivia bank, 25°34.5'S, 6°04'E, 930933 m, 17.05.1983: 1 ♂ 14.4 mm, 1 ov. ♀ 14.8 mm, paratypes (USNM 240164).
Western Indian Ocean. La Reunion. "Marion Dufresne": cruise MD32, stn CP 103, 20°41.6'S, 54°56.8'E, 29502970 m, 29.08.1982: 2 ♂ 12.2, 14.2 mm (MNHN-Pg 5646).
South Africa. "Galathea": stn 190, off Durban, 29°42'S, 33°19'E, 2720 m, 3.02.1951: 1 ♂ (damaged) 9.5 mm (ZMK).
TYPES. — All from Valdivia Bank. Holotype: ov. ♀ 14.0 mm, VALDIVIA 1: stn P-4, 25°32'S, 6°06.9'E, 904-959 m (ICM-D 204/1991). Paratypes: 1 ♂, 1 ov. ♀, VALDIVIA 1: stn P-4, 25°32'S, 6°06.9'E, 904-959 m (ICM). — 4 ♂, 4 ov. ♀ (ICM); 1 ♂ 14.4 mm, 1 ov. ♀ 14.8 mm (USNM 240164), VALDIVIA 1: stn P-5, 25°34.5'S, 6°04'E, 933 m, 17.05.1983. — 1 ♂, VALDIVIA 1: stn P-9, 25°35'S, 6°09.3'E, 922 m (ICM). — 4 ♂, 3 ♀ , 3 ov. ♀, VALDIVIA 1: stn P-10, 25°29.3'S, 6°07.5'E, 900-915 m (ICM).
DIAGNOSIS. — Shield about as broad as long, dorsal surface well calcified or with weakly calcified areas medially; lateral projections broadly rounded. Rostrum broadly subtriangular, rounded distally; with short mid-dorsal ridge. Anterolateral margin of branchiostegite unarmed. Ocular peduncles less than half length of shield, inflated basally; width of cornea about same as distal width of ocular peduncle. Ocular acicles subtriangular, terminating in simple strong spine (rarely bifid). Antennular peduncle exceeding distal margin of cornea by nearly entire length of penultimate segment; lateral face of basal segment with statocyst lobe having subrectangular distal lobe armed with 1 or 2 spines, and 1 spine proximally. Antennal peduncle exceeding distal margin of cornea by entire length of fifth antenna] segment; flagellum with setae 1 to 2 flagellar articles in length; acicle nearly straight or weakly curved in dorsal view, exceeding distal margin of cornea by half or more length of acicle, mesial margin unarmed. Epistomial spine usually absent. Sternite of third maxillipeds with strong spine on each side of midline. Left cheliped well calcified, densely setose; carpus with row of small spines on dorsal margin. Ambulatory legs with meri, carpi and propodi unarmed except for small dorsodistal spine on each carpus; propodi each about 4 or more (first leg) or 4.5 (second leg) times as long as high; meri each about 4 (first leg) or 3.5 (second leg) times as long as high. Anterior lobe of sternite of second ambulatory legs subsemicircular, setose, unarmed or armed with small subterminal spine. Fourth pereopod with propodal rasp consisting of 2 or 3 rows of conical scales. Fifth pereopod with propodal rasp less than half length of propodus. Telson and uropods asymmetrical. Terminal margin of telson divided into 2 rounded projections by angled (V-shaped) cleft; rounded projections armed distally with numerous short corneous spines (approximately 25 or more left, 15 or more right). Left exopod of uropod elongate, about 2.6 times as long as broad; with broad rasp.
SIZE RANGE. - Males, SL 9.5 to 21.0 mm. Females 13.1 to 20.0 mm. Ovigerous females 13.0 to 14.4 mm or more (MACPHERSON, 1984).
HABITAT. - Usually found living in shelters formed by species of Epizoanthus.
DISTRIBUTION - Southeastern Atlantic: southern Angola to Namibia, including the Valdivia Bank. Southwestern Indian Ocean: La Reunion to South Africa. Depth: 406 to 2970 m.
AFFINITIES. - See P. latimanus.