Decapoda - Caridea - Pandalidae - Plesionika

Plesionika williamsi Forest, 1964


World Distribution
Chan & Crosnier (1987); Burukovsky (1990) - World-wide tropical and subtropical seas; with certainty Atlantic, French Antilles to western Africa, Indo-West Pacific, from Madagascar, Réunion, Seychelles, Kiribati, French Polynesia, southeaster Pacific; Seamounts Sala y Gòmez and south-western part of Nazca ridge, ct 1951, 25°38' S - 86°34' W; 400 m; and Southeast of Easter Island, 35°56' S - 100°41' W). - Deep (300-1140 m, mostly less than 700 m).

Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)

Vertical range : Deep (more than 100 m) - Min-Max observed: 300-1140 m

Réunion data
Plesionika williamsi - Chan & Crosnier, 1997: 209, Réunion, 2 Februrary 1974, 350-500 m (probably coll. P. Guézé).

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
EASTER ISLAND - Plesionika (Plesionika) aff. willamsi - Burukovsky, 1990: 206 (Seamounts Sala y Gòmez and south-western part of Nazca ridge, ct 1951, 25°38' S - 86°34' W; 400 m). - Parin et al., 1997: 163, tab. 3 (List of Decapoda for the Nazca and Sala y Gòmez submarine ridges). - Plesionika crosnieri Burukovsky, 1992: 145 (same as Burukovsky, 1990, plus CPTM 8099 "Torok", 26-27 March 1990, 25°39' S - 86°51' W, 583-600 m; 14-15 October 1989, 35°56' S - 100°41' W, 517-520 m). - Plesionika alaini Burukovsky, 1993: 18 (nom. nov. for P. crosnieri Burukovsky, 1992). - Plesionika williamsi - Chan & Crosnier, 1987: 209 (Synonymy and distribution). - REMARK - R. Burukovky does not agree with the synonymy between P. alaini (Burukovsky, 1992) and P. williamsi Forest, 1964 (pers. com. 23th January 2003). - FRENCH POLYNESIA - Plesionika aff. williamsi - Crosnier, 1986a: 373, fig. 4a-g (Tahiti). - Poupin et al., 1990: 16 (French Polynesia), in part, see under P. macropoda. - Plesionika williamsi - Poupin, 1996b: 12, pl. 5f (Bellinghausen = Motu One, Eiao, Fangataufa, Gambier, Makemo, Marutea South, Moruroa, Rurutu, Tahiti, Tahuata, Ua Pou; 310-470m; coll. Frv Marara); 1998: 29 (Checklist). - Chan & Crosnier, 1997: 209, fig. 14-15, 32-33 (Bellingshausen/Motu One, Eiao, Fangataufa, Makemo, Marutea South, Moruroa, Tahiti, Tahuata, Tubuai, Ua Pou (350-600; Syn).

Lesser Antilles data
Distribution: ICA (Guadeloupe). 300-1140 m, mostly les than 700 m. Pantropical.
Plesionika macropoda - Poupin, 1994: 25, Guadeloupe, in part, pl. 1e - Not P. macropoda Chace, 1939 but P. williamsi fide Chan & Crosnier (1997: 209)
Plesionika williamsi - Chan & Crosnier, 1997: 209, Guadeloupe [stations R/V Polka 1993].

Other data
Polynesie, CAS57 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS235 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS111 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS59 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS96 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS473 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, STATION — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS402 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS338 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS299 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS280 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS279 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234

Comment(s) on data
According to Chan & Crosnier (1997), Plesionika macropoda Chace, 1939 and P. williamsi Forest, 1964 are ‘extremely similar’ but ‘almost none of the previous authors discussed their relationships’. According to these authors they do represent distinct species that occur sympatrically in the Antilles and French Polynesia. Plesionika macropoda is unbanded, with rounded abdominal tergite III and longer rostrum while P. williamsi is banded, with pointed abdominal tergite III and shorter rostrum.

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database