Periclimenaeus perlatus ( Boone, 1930 )

Fransen, Charles H. J. M., 2023, The marine palaemonid shrimps (Crustacea, Deapoda, Caridea) of the Dutch Caribbean, Zootaxa 5387 (1), pp. 1-127 : 56

Periclimenaeus perlatus ( Boone, 1930)

( Figs. 33–34 )

Material examined. Curaçao: RMNH. CRUS.D.58149: 1 female, pocl. 2.1 mm , R =7/0; stn COA. 20, Playa Kanoa , 12°10′29.00″N 68°51′54.10″W, 4.xi.2013, depth 4 m, scuba diving, in yellow sponge (photo COA.20, 005), collected by C.H.J.M. Fransen (photo COA.20 006–011, 017, 018) . RMNH . CRUS. D.58150: 1 specimen; stn CAR.05, Playa Kalki , 12°22.536′N 69°09.464′W, 01.iv.2014, depth unknown, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58151: 2 specimens; stn CAR.05, Playa Kalki , 12°22.536′N 69°09.464′W, 01.iv.2014, depth unknown, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58152: 2 specimens; stn CAR.05, Playa Kalki , 12°22.536′N 69°09.464′W, 01.iv.2014, depth 14 m, scuba diving, in A. lacunosa (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58153: 2 specimens; stn CAR.07, Kleine Knip , 12°20.475′N 69°09.154′W, 05.iv.2014, depth 6 m, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58154: 1 ovigerous female; stn CAR.10, Playa Lagun , 12°19.090′N 69°09.036′W, 08.iv.2014, depth 10 m, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58155: 2 specimens; stn CAR.13, Jan Thiel , 12°04.584′N 68°52.796′W, 10.iv.2014, depth 9 m, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS. D.58156: 1 specimen; stn CAR.17, Coral Estate / Habitat Curaçao, 12°11.877′N 69°04.751′W, 16.iv.2014, depth 22 m, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch. RMNH. CRUS.D.58157: 1 female, pocl. 1.4 mm , R = 6/0; stn CAR.29, Radio City , 21.iv.2014, depth 26 m, scuba diving, in A. archeri (id. R. W.M. van Soest), collected by C. Rauch.

Remarks. The morphological characters of the present specimens agree well with the original description by Boone (1930) and the redescription by Holthuis (1951b). Rostrum ( Fig. 33A, B ) straight, overreaching first two segments of antennular peduncle, with 6 or 7 dorsal teeth increasing in size towards tip, ventral margin without teeth. Carapace without supraorbital tooth or tubercle; antennal tooth robust, at level of inferior orbital angel; inferior orbital angle obliquely rounded, not produced ( Fig. 33B ); pterygostomial angle rounded, not produced ( Fig. 33A ). Scaphocerite almost reaching distal margin of antennular peduncle; distolateral tooth small, not overreaching distal margin of lamina; carpocerite just falling short of distal margin of scaphocerite ( Fig. 33B ). First pereiopods very long and slender. Second pereiopods unequal in size and shape with tubercles on palm and carpus of major cheliped; distal part of cutting edges of fingers of both left and right chela entire, without fine denticulation. Third pereiopod with few ventral spines in distal part of propodus; dactylus short, biunguiculate ( Fig. 33E ). First abdominal segment with anterior median dorsal lobe ( Fig. 33C ). Sixth abdominal somite with posterolateral margin rounded ( Fig. 33D ). Telson with large dorsal spines, anterior pair close to the proximal margin of telson, smaller than posterior pair; posterior pair situated in proximal half of telson; lateral pair of distal spines distinctly subdistal ( Fig. 33D ). Distolateral tooth of exopod of uropod distinct, with mobile spine medially; mobile spine about twice as long as distolateral tooth ( Fig. 33D ).

Colour. Species translucent ( Fig. 34 ) with reddish tinge.

Ecology. Lives in association with sponges ( Holthuis 1951b; Chace, 1972; De Grave & Anker 2017). Now recorded for the first time from A. archeri and A. lacunosa .

Distribution. Recorded from few localities in the tropical western Atlantic: from Florida ( Holthuis 1951b) , Carribean coast of Panama ( Holthuis 1951b), Haïti ( Boone 1930), Venezuela ( Rodríguez 1986), and Brazil ( Coelho et al. 2006, Vieira et al. 2012), in depths of 0– 37 m. This is the first record of the species from Curaçao.

Figures

FIGURE 33. Periclimenaeus perlatus (Boone, 1930). RMNH.CRUS.D.58149, female, pocl. 2.1 mm. A, anterior appendages, lateral view; B, idem, dorsal view; C, posterior margin carapace and anterior margin first abdominal segment, dorsal view; D, tailfan, dorsal view; C, third right pereiopod dactylus and distal part propodus, mesial view. Scale bars: A–D=1.0 mm; E=0.125 mm.

FIGURE 34. Periclimenaeus perlatus (Boone, 1930), stn COA.20, Curaçao, Playa Kanoa, 12°10′29.00″N 68°51′54.10″W, 4.xi.2013, depth 4 m, in yellow sponge. (Photograph by C.H.J.M. Fransen.)