Decapoda - Caridea - Pandalidae - Plesionika
| Plesionika macropoda Chace, 1939 |
World Distribution
Chan & Crosnier (1997) - Western Atlantic and southern Pacific: Caribbean and in the South Pacific, only known with certainty from New Caledonia (Loyalty Islands) and French Polynesia at depths of 260-600 m.
Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)
Vertical range : Deep (more than 100 m) - Min-Max observed: 200-600 m
New Caledonia data
Nouvelle Caledonie, 90 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234. Loyalty Islands
Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
Plesionika aff. williamsi - Poupin et al., 1990: 16 (French Polynesia), in part not P. williamsi Forest, 1964. - Plesionika macropoda - Poupin, 1996b: 10, pl. 4d (Gambier, Huahine, Maria, Moruroa, Tureia, Ua Pou; 300-600m; coll. Frv Marara, fr); Poupin, 1998: 28 (Checklist). - Chan & Crosnier, 1997: 205, fig. 11-13, 30-31 (Gambier, Huahine, Maria [Austral & Tuamotu], Moruroa, Ua Pou; 310-500m; Syn.).
Lesser Antilles data
Distribution: VGI (St Thomas, St Croix), ICA (Guadeloupe, Martinique, Grenada), IOV (Testigos). 200-600 m. Pantropical.
Plesionika macropoda - Bullis & Thompson, 1965 : 8, between Grenada, Testigos [R/V Oregon, st. 2772]. - Monterrosa, 1988: 637, St Thomas, St Croix. - Poupin, 1994: 25, Guadeloupe (in part, some sp. are P. williamsi). - Chan & Crosnier, 1997: 205, Guadeloupe [coll. R/V Polka, 1990, 1993].
Plesionika polyacanthomerus - Paulmier, 1993: 19, Guadeloupe, Martinique. - Paulmier & Gervain, 1994: 10, tab. 2, Martinique. - Gervain et al., 2002: 32, Guadeloupe. - All not P. polyacanthomerus Pequegnat, 1970 according to re-det. A. Crosnier, in Poupin (1994: 26) and Chan & Crosnier (1997).
Other data
Polynesie, CAS238 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS37 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS59 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS476 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS421 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS382 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS311 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Polynesie, CAS405 — Chan TY & Crosnier A, Musorstom 18, 176: 187-234
Comment(s) on data
Comment: this species is affiliated to Plesionika williamsi Forest, 1964 but Forest (1964) did not compare the two when describing P. williamsi. A. Crosnier (in Poupin, 1994: 26) indicates that the two species can be separated by third abdominal tergite more or less spinous in P. williamsi, rounded in P. macropoda.
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.
Plesionika macropoda has been confused with Plesionika polyacanthomerus Pequegnat in Paulmier (1993) and Paulmier & Gervain (1994). The two can be separated by 'a broad curved ridge on the lateral face of the carapace, in P. polyacanthomerus, absent in P. macropoda, and by more spines on P3 merus in P. polyacanthomerus (20-34) than in P. macropoda (9-10 in Monterrosa, 1998, fig. 4).
References : PDF list, 214 pp (1.4 Mo)This species in Worms Database