Pagurus exilis ( Benedict, 1892 )

Nucci, Paulo Ricardo & Melo, Gustavo Augusto Schmidt De, 2007, Hermit crabs from Brazil. Family Paguridae (Crustacea: Decapoda: Paguroidea): Genus Pagurus, Zootaxa 1406, pp. 47-59 : 50-53

publication ID

https://doi.org/ 10.5281/zenodo.175515

publication LSID

lsid:zoobank.org:pub:EBF01CD6-3875-43ED-B91F-72125DEDBF13

DOI

https://doi.org/10.5281/zenodo.6250399

persistent identifier

https://treatment.plazi.org/id/039287BC-FF99-FFF4-FF66-FA7002B97663

treatment provided by

Plazi

scientific name

Pagurus exilis ( Benedict, 1892 )
status

 

Pagurus exilis ( Benedict, 1892) View in CoL

(Figs. 1C, 2C, 3C, 4C)

Eupagurus exilis Benedict, 1892: 6 View in CoL .— Barattini & Ureta, 1960: 53.

Pagurus exilis View in CoL .— Forest & Saint Laurent, 1968: 135, figs 102–106.— Coelho & Ramos, 1972: 165.— Scelzo & Boschi, 1973: 208.— Boschi, 1979: 138.— Coelho & Ramos-Porto, 1986: 41.— Hebling & Rieger, 1986: 68, fig. 3.— Rieger, 1998: 414.— Melo, 1999: 126, fig. 70.

Diagnosis. Shield slightly broader than long. Rostrum triangular, with rounded tip. Ocular peduncles with median constriction; corneae dilated. Ocular acicles large, with rounded tips and small submarginal spine; dorsal face remarkably concave. Antennular and antennal peduncles overreaching corneae, approximately 2/3 as long as ultimate segment. Right cheliped elongate; palm with several conical or flattened tubercles on dorsal face, more developed near mesial margin. Left cheliped smaller than right; fingers 1.5 length of palm; dorsal face of carpus slightly convex, with midline of strong conical tubercles. Second and third pereopods strong; on dorsal and ventral faces of meri and on propodi transversal granulated grooves with short setae inserted; dactyls slightly turned inside, with median grooves on lateral faces. Telson with posterior lobes short and broad, left lobe more developed than right; posterior margins armed with irregular strong spines.

Shield and cephalic region: A, Pagurus brevidactylus ; B, P. criniticornis ; C, P. exilis ; D, P. heblingi ; E, P.

leptonyx ; F, P. limatulus ; G, P. longimanus ; H, P. provenzanoi .

Distribution. Western Atlantic — Brazil (from Rio de Janeiro to Rio Grande do Sul), Uruguay and Argentina.

Habitat. From shallow waters to 50 metres, on sandy and muddy bottoms.

Material examined. Brazil: Rio de Janeiro – Cabo Frio, 30 m, 1 male: 6.4 mm ( MZUSP –8635); 45 m, 1 male: 4.9 mm ( MZUSP –8637); 30 m, 1 female: 4.8 mm ( MZUSP –8638); Proj. Ilha Grande, st. 335, 1 male: 3.6 mm ( MZUSP –4700); st. 268, 2 males: 4.8, 3.1 mm ( MZUSP –4702); st. 294, 15 m, 1 female: 3.1 mm ( MZUSP –4696); st. 273, 2 males: 4.7, 3.6 mm ( MZUSP –4704). São Paulo – Ubatuba, Proj. Integrado, st. 29, 1 male: 4.5 mm ( MZUSP –8751); st. 15, 3 males: 5.1, 4.6, 4.7 mm ( MZUSP –8745); st. 22, 4 males: 5.5, 5.4, 5.3, 4.2 mm ( MZUSP –8749); st. 26, 3 males: 5.5, 5.0, 4.7 mm ( MZUSP –8750); st. 33, 2 females: 3.7, 3.6 mm ( MZUSP –8753); st. 14, 1 male: 5.3 mm ( MZUSP –8744); st. 20, 4 males: 4.6, 4.8, 5.5, 4.9 mm ( MZUSP – 8747); st. 42, 3 males: 5.1, 4.9, 4.5 mm ( MZUSP –8754); fixed st. 4, 3 males: 5.9, 4.8, 5.7 mm ( MZUSP – 8757); st. 18, 1 male: 6.5 mm ( MZUSP –8746); Ilha da Moela, 1 male: 4.9 mm, 1 female: 4.5 mm ( MZUSP – 7363); 2 males: 5.2, 5.2 mm ( MZUSP –7362); Santos, 36 m, 1 female: 4.6 mm ( MZUSP –7360); 1 male: 5.2 mm ( MZUSP –7361); 3 females: 4.7, 4.4, 3.5 mm, 1 male: 3.9 mm ( MZUSP –13346). Rio Grande do Sul – Proj. GEDIP, st. 409, 32 m, 1 male: 5.1 mm ( MZUSP –4698).

Remarks. Pagurus exilis is relatively close to P. longimanus (which is only found in Amapá), P. limatulus and P. heblingi . The four species are similar in the aspect of the cephalic region, but can be quickly distinguished by differences in the shape and ornamentation of the chelipeds and ambulatory legs.

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Paguridae

Genus

Pagurus

Loc

Pagurus exilis ( Benedict, 1892 )

Nucci, Paulo Ricardo & Melo, Gustavo Augusto Schmidt De 2007
2007
Loc

Pagurus exilis

Melo 1999: 126
Rieger 1998: 414
Coelho 1986: 41
Hebling 1986: 68
Boschi 1979: 138
Scelzo 1973: 208
Coelho 1972: 165
Forest 1968: 135
1968
Loc

Eupagurus exilis

Ureta 1960: 53
Benedict 1892: 6
1892
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