Dardanus insignis Saussure 1858
Creators: name: Nucci, Paulo Ricardo
name: Melo, Gustavo Augusto Schmidt De
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Diogenidae
Dardanus
Dardanus insignis

description: Dardanus insignis (Saussure, 1858)
(Figs 3 B, 6D)
Pagurus insignis Saussure, 1858: 453, pl. 3, figs 20, 20a.
Pagurus striatus var. petersii A. Milne-Edwards & Bouvier, 1893: 162, pl. 11, figs 24, 25.
Pagurus arrosor var. petersii.— Moreira, 1903: 64; 1906: 133.
Dardanus insignis.— Verrill, 1908: 446, fig. 60, pl. 26, figs 4b, c, 5b.— Schmitt, 1926: 48, fig. 69A, D, G.— Williams, 1965: 124, fig. 100; 1984: 197, fig. 137.— Hazlett, 1966: 82.— Coelho & Ramos-Porto, 1986: 50.— Hebling & Mansur, 1995: 471, figs 1–11 [larvae].— Rieger, 1998: 420.— Melo, 1999: 62, fig. 18.—McLaughlin et al., 2010: 20.
Dardanus arrosor ssp insignis.— Forest & Saint Laurent, 1968: 91, pl.1, figs 2, 4.— Scelzo, 1971: 146; 1973: 168.— Coelho & Ramos, 1972: 168.— Scelzo & Boschi, 1973: 208.— Boschi, 1979: 138.— Hebling & Rieger, 1986: 73, fig. 7.
Material examined. Brazil: Rio de Janeiro—Proj. SOL, st. 1144, Cabo de São Tomé, 1 spec. (MZUSP-4726); Cabo Frio, 3 spec. (MZUSP-13807); Proj. Ilha Grande, st. 261, 1 spec. (MZUSP-4727); st. 108, 1 spec. (MZUSP-4742); st. 6B, 1 spec. (MZUSP-4740). São Paulo—Proj. Integrado, st. 13, 8 spec. (MZUSP-8718); st. 14, 6 spec. (MZUSP-8719); st. 4948, 1 spec. (MZUSP-8727); st. 4857, 1 spec. (MZUSP-8725); st. 4852, 2 spec. (MZUSP-8723); st. 4953, 1 spec. (MZUSP-8726); st. 4855, 1 spec. (MZUSP-8724); st. 9, 12 spec. (MZUSP- 8716); st. 6, 11 spec. (MZUSP-8714); st. 35, 34 spec. (MZUSP-7527); 20 spec. (MZUSP-7526); st. 34, 15 spec. (MZUSP-7525); st. 32, 18 spec. (MZUSP-7524); Proj. “Sol”, st. 1034, 2 spec. (MZUSP-4633); st. 1303, 1 spec. (MZUSP-4634); st. 1483, 3 spec. (MZUSP-4639); Ubatuba, 2 spec. (MZUSP-9401); Base do I. O., 6 spec. (MZUSP-7489); Ilha de Alcatrazes, 1 spec. (MZUSP-4620); 1 spec. (MZUSP-7487); leste da Ilha Vitória, 3 spec. (MZUSP-13007); Farol da Moela, 1 spec. (MZUSP-7486); Ilha do Bom Abrigo, 1 spec. (MZUSP-13316); Santos, 2 spec. (MZUSP-12989). Paraná—Paranaguá, 1 spec. (MZUSP-13869). Santa Catarina—Arvoredo, 1 spec. (MZUSP-4629). Rio Grande do Sul—Proj. GEDIP, st. 568, 2 spec. (MZUSP-4614); 1 spec. (MZUSP- 4628); st. 592, 2 spec. (MZUSP-4635); st. 383, 1 spec. (MZUSP-4640); st. 1643, 1 spec. (MZUSP-8669); st. 471, 2 spec. (MZUSP-7488); st. 401, 2 spec. (MZUSP-4638). Uruguay: Proj. GEDIP, st. 310, 1 spec. (MZUSP- 4631); st. 280, 1 spec. (MZUSP-4637); st. 1869, 2 spec. (MZUSP-4630).
Diagnosis. Shield longer than broad, with scattered tufts of setae. Chelipeds strong, left larger than right, covered with ciliated tuberculate striae, arranged in parallel way; cutting edges of fingers with strong white teeth with dark tip. Ambulatory legs (first and second) strong, with similar striated pattern of chelipeds.
Distribution. Western Atlantic—from North Carolina to Florida, Gulf of Mexico, Antilles and Brazil (from Rio de Janeiro to Rio Grande do Sul), Uruguay and Argentina.
Remarks. Dardanus insignis can be easily distinguished from other species of the genus (occurring in Brazil) by the presence of granular striations with fringes of bristles, mainly on the chelipeds.
description: Published as part of Nucci, Paulo Ricardo & Melo, Gustavo Augusto Schmidt De, 2015, Hermit crabs from Brazil: Family Diogenidae (Crustacea: Decapoda: Paguroidea), except Paguristes, pp. 327-346 in Zootaxa 3947 (3) on pages 336-337, DOI: 10.11646/zootaxa.3947.3.2, http://zenodo.org/record/240452