Pachygrapsus marmoratus ( Fabricius, 1787 )

Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe, 2005, A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species, Zootaxa 1015 (1), pp. 1-66: 25-28

publication ID

http://doi.org/ 10.11646/zootaxa.1015.1.1

publication LSID

lsid:zoobank.org:pub:67DBD7AA-FA11-4F32-811B-0A9EFF4C668F

persistent identifier

http://treatment.plazi.org/id/6C3D8794-ED5F-FFE3-6C1C-FAD8FEA3FB30

treatment provided by

Felipe

scientific name

Pachygrapsus marmoratus ( Fabricius, 1787 )
status

 

Pachygrapsus marmoratus ( Fabricius, 1787)   ( Figures 7a–e View FIGURE 7 , 14j View FIGURE 14 , 15j View FIGURE 15 )

Cancer marmoratus Fabricius, 1787: 319   [type locality: unknown]

Grapsus varius Latreille, 1803: 67   (Mediterranean). —H. Milne Edwards, 1837: 88 (Brittany, Italy).

Leptograpsus marmoratus   —H. Milne Edwards, 1853: 171 (Mediterranean)

Pachygrapsus marmoratus   — Stimpson, 1858: 48 [102] (Madeira); 1907: 116 (Madeira). — Heller, 1863: 111, pl. 3 fig. 8­10 (Mediterranean). — Kingsley, 1880: 201 ( France, Bosporus). — Ortmann, 1894: 710 (Mediterranean). — Rathbun, 1918: 250, fig. 138, pl. 62 (Biarritz, France; Azores; synonymy). — Pesta, 1918: 451, fig. 149 (Adriatic). — Fauvel, 1929: 3 (Cotentin Peninsula). — Nobre, 1931: 103, fig. 1, 58, 59 ( Portugal); 1936: 61, fig. 1 ( Portugal). — Bouvier, 1940: 259, fig. 179, pl. 11, fig. 4 (warm temperate Northeast Atlantic, Mediterranean, Black sea). — Zariquiey Álvarez, 1946: 163, pl. 18, fig. e; 1968: 423, fig. 140a, 141b–e ( Spain). — Holthuis & Gottlieb, 1958: 100, pl. 3, fig. 15 (Mediterranean coast of Israel; references, distribution). — Bourdon, 1965: 32 (Brittany). — Bãcescu, 1967: 326, fig. 56, 138b, 139, 140a ( Romania). — Ingle, 1980: 121, fig. 24, 72, 74, pl. 23b (British Channel). — González Gurriarán & Méndez, 1985: 149, fig. 56, photo 44 (Galicia). — Moyse & Smaldon, 1990: 551, fig. 10.28 (English Channel). — Falciai & Minervini, 1992: 234, pl. 16. —d’Udekem d’Acoz, 1994: 35 ( Greece); 1999: 255 (references, distribution, ecology); 2005 (photographs, refer­ ences, distribution). — González Pérez, 1995: 223, photo 163 (Canary Is.). — Vincent & Le Granche, 1996: 173 (Cotentin peninsula, France). — Debelius, 1999: 103, photograph.

? Pachygrapsus pubescens Heller, 1865: 45   , pl. 4, fig. 4 [type locality, Chile; probably erroneous, see remarks]. — Kingsley, 1880: 201 (in list). — Rathbun, 1918: 252, pl. 160, fig. 1 ( Chile; from Heller only). — Garth, 1957: 96 (in list). — Retamal, 1981: 35, fig. 192 (in list). — Boschi, 2000: 103 (in list). See remarks.

Type material

Cancer marmoratus Fabricius, 1787   : not located, probably not extant.

Pachygrapsus pubescens Heller, 1865   : syntypes 1 M, 2 F (NHMW, 10263), 1 M, 1 F (NHMW, 10264). C. Schubart (pers. comm.) will designate a lectotype in a forthcoming paper.

Material Examined

Mediterranean Sea. Tunisia: Gabès, port, coll. R. B. Manning et al., 6 June 1973, 2 M 21.9 x 24.7, 24.5 x 26.8 mm, 1 ov. F 28.2 x 32.4 mm ( USNM 258082 View Materials )   . Italy, Sicily, Trapani, rocky flat south of and outside harbour, coll. R. B. Manning, 20 June 1974, 5 M 5.6 x 7.2–12.1 x 13.8 mm, 1 ov. F 16.0 x 18.1 mm, 4 F 5.9 x 6.8–6.9 x 8.8 mm ( USNM 152262 View Materials )   . East Atlantic   . France, Préfailles, coll. P. Chalumeau, August 1991, 1 F 12.7 x 14.3 mm ( MNHN B22654 View Materials )   .

Diagnosis

Carapace subquadrate; lateral margins with 2 teeth behind exorbital angle. Dorsal surface flattened with transverse striae on gastric, hepatic, branchial regions; mesogastric, cardiac, intestinal regions smooth or with short striae ( Fig. 7a View FIGURE 7 ). Anterior margin of front almost straight, 0.6 times width of exorbital length ( Fig. 7b View FIGURE 7 ). Infraorbital margin deeply denticulated medially, outer notch deep, obliquely oriented ( Fig. 14j View FIGURE 14 ).

Outer face of chelae regularly convex, smooth, or with an unclear longitudinal line near lower margin; upper margin of palm with few oblique lines on inner face; cutting edges of fingers broadly gaping, with triangular teeth; tip of fingers corneous, spoon­like, glabrous ( Fig. 7c View FIGURE 7 ). P2, P3 carpi, propodi with sparse bristles but without brush of setae. P5 merus with lower margin smooth or slightly denticulated, without submedian tubercle; distoventral angle without spines, rounded or slightly indented ( Fig. 7d View FIGURE 7 ).

Abdominal tergites smooth; sixth somite of abdomen plus telson triangular in male ( Fig. 7e View FIGURE 7 ). G1 distally rounded with short corneous process ( Fig15j View FIGURE 15 ).

Colour (d’Udekem d’Acoz, pers. comm.): two basic but overlapping colour patterns. Either fine purplish­black reticulations on a whitish background, or almost plain purplish black with a few small irregular white variegations.

Measurements: large size; carapace of specimens examined ranging from 5.6 x 7.2– 28.2 x 32.4 mm; carapace width of 40 mm is common.

Distribution

West Atlantic, Mediterranean and Black seas: Azores, Madeira, Canary Is., European coast from Bay of Biscay to Morocco, Mediterranean Sea, Sea of Marmara, Black Sea. Pachygrapsus marmoratus   was occasionally reported from the French coast of the English Channel: Brittany ( Bourdon, 1965), and twice the Cotentin peninsula ( Fauvel, 1929; Vincent & Le Granche, 1996). It is possible that Fauvel’s specimen was accidentally

introduced from the south by fishermen. It is not ruled out that the identification by Vincent & Le Granche (1996) results from confusion with Hemigrapsus sanguineus (de Haan, 1835)   (P. Noël, field observation and pers. comm.). The female specimen of Vincent & Le Granche is lost. Noël found in 2004 several specimens of H. sanguineus   at Saint­Vaast­la­ Hougue, France but none of P. marmoratus   .

Habitat

Intertidal; rocky shores and under stones on sandy mud in estuaries and lagoons. Very common in southern Europe.

Remarks

Besides P. marmoratus   only P. pubescens Heller, 1865   , a little­known species from Chile, has two teeth behind the exorbital angle. The syntypes of P. pubescens   (1 male, 2 females NHMW 10263; 1 male, 1 female NHMW 10264) were not examined. C. Schubart re­examined them and in a forthcoming paper will show that P. pubescens   is a junior synonym of P. marmoratus   (C. Schubart, pers. comm.). P. Dworschak (pers. comm.) has suggested that the type locality could be Gibraltar rather than Chile as indicated by Heller.

Two small specimens from Juan Fernandez Is., Chile identified by M. J. Rathbun as P. pubescens   were examined (coll. W. L. Schmitt, along boulder covered beach to left of cannery, littoral, 8 December 1926, 2 juv. 4.5 x 4.7–4.5 x 4.9 mm, USNM 70847). These juveniles are in poor condition but can be identified as Leptograpsus variegatus (Fabricius, 1793)   , a species widespread in the South Pacific, from Australia to South America, including Chile.

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Grapsidae

Genus

Pachygrapsus

Loc

Pachygrapsus marmoratus ( Fabricius, 1787 )

Poupin, Joseph, Davie, Peter J. F. & Cexus, Jean-Christophe 2005
2005
Loc

Pachygrapsus pubescens

Boschi, E. E. 2000: 103
Retamal, M. A. 1981: 35
Garth, J. S. 1957: 96
Rathbun, M. J. 1918: 252
Kingsley, J. S. 1880: 201
Heller, C. 1865: 45
1865
Loc

Pachygrapsus marmoratus

Debelius, H. 1999: 103
Vincent T. & Le Granche, P. 1996: 173
Gonzalez Perez, J. A. 1995: 223
Falciai, L. & Minervini, R. 1992: 234
Moyse, J. & Smaldon, G. 1990: 551
Gonzalez Gurriaran E. & Mendez, G. 1985: 149
Ingle, R. W. 1980: 121
Bacescu, M. C. 1967: 326
Bourdon 1965: 32
Holthuis, L. B. & Gottlieb, E. 1958: 100
Zariquiey Alvarez, R. 1946: 163
Bouvier E. - L. 1940: 259
Nobre, A. 1931: 103
Fauvel, P. 1929: 3
Rathbun, M. J. 1918: 250
Pesta, O. 1918: 451
Ortmann, A. 1894: 710
Kingsley, J. S. 1880: 201
Heller, C. 1863: 111
Stimpson, W. 1858: 48
1858
Loc

Leptograpsus marmoratus

Milne Edwards, H. 1853: 171
1853
Loc

Grapsus varius

Milne Edwards, H. 1837: 88
Latreille, P. A. 1803: 67
1803
Loc

Cancer marmoratus

Fabricius, J. C. 1787: 319
1787