Dardanus insignis ( de Saussure, 1857 )

Dardanus insignis ( de Saussure, 1857) View in CoL

( Figs. 7–8 View FIGURE 7 View FIGURE 8 )

Pagurus insignis de Saussure, 1857: 503 [ type locality: "La Guadeloupe "]; de Saussure 1858a: 453, fig. 20; 1858b: 37, fig. 20; Young 1900: 366.

Aniculus Petersii A. Milne-Edwards 1880: 40 [ type localities: 23°13'N, 89°16'W and "Barbades"].

Pagurus striatus var. pectinata Ortmann 1892a: 284 , pl. XII, fig. 10 [type locality: " Brasilien "; 31°24'S, 50°36'W, by present neotype designation].

Pagurus striatus var Petersii . — A. Milne-Edwards & Bouvier 1893: 162, pl. 11 figs 24–35.

Pagurus arrosor var. petersii . — Moreira 1903: 64 [10 on reprints]; 1906: 12.

Petrochirus arrosor pectinatus . — Rathbun 1900: 302 (in part: Brazil only).

Dardanus insignis View in CoL . — Verrill 1908: 446, fig. 60, pl. 26 figs 4b–c, 5b; Schmitt 1926: 48, figs 69a, d, g; Williams 1965: 123 (key), 124, fig. 100; 1984: 197, fig. 137; Takeda 1983: 103, unnumbered photo; Abele & Kim 1986: 29, 332 (key), unnumbered plate fig. a (p. 341); Coelho & Ramos-Porto 1986: 48 (key), 50; Poupin, 1994: 31, pl. 1 fig. h; 2018: 156; 2024: 84 (list); Hebling & de Barros Mansur 1995: 471, figs 1–11 (larval development); Schmidt de Melo 1999: 62, fig. 18; Poupin & Corbari 2016: 52, fig. 12i; Nucci & Schmidt de Melo 2015: 335 View Cited Treatment (key), 336 (ubi syn.), figs 3B, 6D; Hollier 2018: 295; Mantelatto et al. 2021: 576 View Cited Treatment , fig. 4e.

Pagurus arrosor var. pectinata . — Balss 1921: 43 (in part, southwestern Atlantic only).

Dardanus arrosor ssp. insignis . — Forest & de Saint Laurent 1968: 91, pl. 1 figs 2, 4.

Material examined. WEST ATLANTIC: ♂ (shield length: 22.7 mm), RV Calypso , cruise Amérique du Sud 1961– 1962, stn 52, Brazil, State of Rio Grande do Sul, 31°24’S, 50°36’W, 21 m, sand, trawl, 17 Dec. 1961, neotype of Pagurus striatus var. pectinatus (Ortmann, 1892) (MNHN-IU-2025-168, removed from MNHN-IU-2017-9078, old registration number Pg2806)); 3 specimens (not sexed, not extracted from their shell), RV Calypso , cruise Amérique du Sud 1961–1962, stn 152, Brazil, 31°24’S, 50°36’W, 21 m, sand, trawl, 17 Dec. 1961 (MNHN-IU-2017-9078, old registration number Pg2806).

Distribution. West Atlantic: North Carolina ( Williams 1984) to West Indies and Gulf of Mexico, Suriname, French Guyane ( Takeda 1983), and Brazil to Argentina (Mantelatto et al. 1921); shallow water to 500 m ( Schmidt de Melo 1999).

Remarks. Given the current taxonomic ambiguity in Pagurus arrosor var. pectinatus Ortmann, 1892 because of the absence of type material and inadequate type description, the largest specimen from RV Calypso, Amérique du Sud 1961 –1962, stn 152, a male (MNHN-IU-2025-168), is designated here as the neotype to fix the identity of the species. Consequently, Pagurus arrosor var. pectinatus Ortmann, 1892 becomes a subjective junior synonym of Pagurus insignis de Saussure, 1857 and Aniculus petersii A. Milne-Edwards, 1880.

The authorship of Pagurus insignis is usually attributed to de Saussure (1858a) (e.g. Williams 1984). However, the name was already introduced in an often overlooked paper: de Saussure (1857).