Dilocarcinus pagei Stimpson, 1861

Dilocarcinus pagei Stimpson, 1861 View in CoL

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 5 A, B View Figure 5

Dilocarcinus septemdentatus View in CoL – Nobili 1896: 1 [part].

Orthostoma septemdentatum — Nobili 1898: 10 [part].

Dilocarcinus pagei Stimpson, 1861: 373. — Rodríguez 1981: 48 (in list). — Rodríguez 1992: 15 (in list), 108 (in key), 125 [part]. — Morrone and Lopretto 1994: 100, fig. 19; 107 (in list). — Morrone and Lopretto 1995: 4 (in list). — Morrone and Lopretto 1996: 71 (in list). — Magalhães 1998: 519 [part]. — Magalhães 2000: 25, 56, 59 (in list), 60, 61, 120, 144, 175, 178, 180, 181, 288, 289. — Morrone and Lopretto 2001: 52, fig. 8 (map), 53 [part]. — Magalhães 2001: 70 (in list), 133 (in list), 138 (in list). — Magalhães 2003: 203 (in key), 204, figs 106 (map), 107 [part]. — Collins et al. 2004: 254 (in list). — Magalhães et al. 2005: 1934, fig. 1–5. — Magalhães and Türkay 2008: 187 (in key), 190, figs 8 a, 11 (map) [part]. — Cumberlidge et al. 2009: suppl. material, 26 (in list) [part]. — Azevedo-Santos and Lima-Stripari 2010: 200, fig. 1. — Magalhães 2016: 431 (in list) [part]. — Rogers et al. 2020: 946 (in key) [part]. View in CoL

Dilocarcinus septemdentatus View in CoL — Moreira 1901: 49 [part.].

Trichodactylus ( Dilocarcinus) orbicularis — Rathbun, 1904: 242 (in list) [part]. — Rathbun 1906 a: 58 [part]. — Moreira, 1912: 151, pl. 5. — Moreira, 1913: 19, pl. 7. — Colosi 1920: 13 (in list), 15. — Coifmann 1939: 113 (in list) [part]. — Ringuelet, 1948: 325. — Ringuelet, 1949: 101, pl. 9, fig. 2.

Dilocarcinus ( Dilocarcinus) pagei pagei View in CoL — Bott 1969: 46, pl. 9, figs 16 a, b; pl. 20, fig. 47. — Lopretto 1976: 68 (in list), 84, figs 26–29. — Manning and Hobbs 1977: 159 (in list). — Lopretto 1981: 22.

Dilocarcinus ( Dilocarcinus) pagei cristatus View in CoL — Lopretto 1976: 68 (in list), 86, figs 14–17. — Lopretto, 1981: 22.

Dilocarcinus ( Dilocarcinus) pagei View in CoL — Lopretto 1981: 23, pls. 1–3. — Zwink, 1990: 103 (in list).

Dilocarcinus pagei pagei View in CoL — Magalhães and Türkay 1996: 67 (in list), 78 (in list) [part]. — Lopretto, 1998: 544 (in list). — Ng et al. 2008: 187 (in list) [part].

Diagnosis.

G 1 with ventral margin gently continuous; lateral side with rounded subdistal lobe weakly developed (“ sl ” in Fig. 5 A View Figure 5 ).

Description.

Carapace suborbicular markedly convex, dorsally smooth; front unarmed, deflexed, distinctly bilobed; anterolateral margin with 6–7 narrow, sharp teeth after exorbital tooth. Pleon with somites III – VI fused; third somite with distinct transverse carina along distal margin in both sexes; male telson subtriangular, anterior margin nearly as long as posterior margin of pleonal somite VI, proximal portion of telson outer margins convex, tip rounded. G 1 (Fig. 5 A, B View Figure 5 ) slender, distal half slightly curved in lateral direction; ventral margin gently continuous, bearing proximal and median patches of setae of varying lengths; dorsal border moderately convex; marginal suture following mesial surface, slightly twisted towards lateral and dorsal surfaces close to apex after subdistal lobe; marginal suture proximal portion bearing row of short and long setae; lateral surface of apical portion with well-developed rounded subdistal lobe, covered by dense patch of small spines, less dense across dorsal surface of apical portion; mesodorsal surface of apical portion covered by dense subdistal tuft of short and long setae; apex short, flat; gonopore narrow, positioned terminally.

Type locality.

Paraguay.

Distribution.

Paraguay and in both upper and lower Paraná River basins, in Brazil ( Mato Grosso, Goiás, Minas Gerais, Mato Grosso do Sul, São Paulo, Paraná), Paraguay, and Argentina (Fig. 6 View Figure 6 ).

Type material.

Holotype, 1 ♀, dry (USNM 2463), date unknown, Page [not examined].

Material examined.

BRAZIL — Mato Grosso: • 1 ♂; Cuiabá River, Cuiabá ; 6. v. 1984; U. Barbosa; INPA 137 View Materials • 5 ♂♂ 1 ♀; Rodovia Transpantaneira, Poconé ; 7–8. vi. 1985; V. A. Araújo; INPA 366 View Materials • 1 ♀; Poconé ; L. Amato; UFRGS 4431 View Materials • 1 ♀; Paranaitá ; 18. i. 2008; S. N. C. Hernani Filho; CCDB 2179 View Materials • 1 ♀; São Luiz de Cáceres ; MZUSP 1652 View Materials • 3 ♀♀; Rodovia Transpantaneira ; 13. xii. 201; J. Vas; MZUSP 4771 View Materials • 1 ♀; Miranda River, Miranda ; ix. 1979; O. Moreira Filho; MZUSP 4774 View Materials • 3 ♀♀; Mato Grosso; 14. xii. 1976; P. E. Vanzolini; MZUSP 6335 View Materials • 1 ♂ 1 ♀; Aricá River, Km 26 , BR 364 ; 6–13. xi. 1982; Equipe de Ictiologia - DCB – UFSCAR; MZUSP 7050 View Materials • 2 ♂♂ 1 ♀; Poconé, Baia do Pio ; 6. vii. 1985; V. Araújo; MZUSP 9502 View Materials • 1 ♀; Porto Espiridião ; 25. xii. 1976; P. E. Vanzolini; MZUSP 9516 View Materials • 1 ♂; Arilas River, Equipe DCB; MZUSP 9687 View Materials • 2 ♂♂ 1 ♀; confluence of Paraguay and Corumbá Rivers ; 29. vi. 2011; MZUSP 24547 View Materials — Goiás: • 2 ♂♂; Catalão ; 03. vii. 2021; E. Mossolin; CCDB 6822 View Materials • 1 ♂ 1 ♀; Anhanguera ; 18°20'30.32"S, 48°13'02.45"W; 05. vii. 2021; E. Mossolin; CCDB 6827 View Materials GoogleMaps • 3 ♂♂; Anhanguera, Fazenda do ″ Dr. Paiva ″ , 18°19'59.32"S, 49°14'06.92"W; 15. x. 2021; E. Mossolin; INPA 4795 View Materials GoogleMaps — Minas Gerais: • 2 ♂♂; Rio Claro, Reservatório de Furnas, region of Raizama ; V. M. A. Santos; INPA 1756 View Materials • 2 ♂♂; Carmo do Rio Claro ; 20°57'16.7"S, 46°09'11.1"W; 27. ii. 2012; F. L. Carvalho, L. P. Rezende, D. P. Andrade; CCDB 4341 View Materials GoogleMaps • 2 ♂♂ 1 ♀; Fazenda Jacúba, Carmo do Rio Claro ; 3. xi. 2012; A. S. Costa; CCDB 4342 View Materials • 2 ♂♂ 1 ♀, Araguari River ; 15°27'16.24"S, 48°35'33.12"W; 20. vii. 2021; A. C. G. Bartoze and G. Jacobucci; INPA 4796 View Materials GoogleMaps • 1 ♂; Conquista, Margin of Rio Grande ,; 26. xii. 2006; W. Santana and M. Cardoso Jr.; MZUSP 18680 View Materials — Mato Grosso do Sul: • 1 ♂; Aquidauana, Fazenda Taboco, Branch of Taboco River ; 20°3.3'S, 55°38.8'W; 31. iii. 1998; C. Magalhães; INPA 1307 View Materials GoogleMaps • 3 ♂♂ 3 ♀♀; Corumbá ; 15. x. 2009; R. Biagi; CCDB 2727 View Materials • 4 ♂♂ 7 ♀♀; same locality; 12. x. 2012; Guilherme; CCDB 4348 View Materials • 1 ♂; same locality; 18°59'49.0"S, 57°39'15.2"W; 16. xi. 2013; F. L. Carvalho; CCDB 5013 View Materials GoogleMaps • 1 ♂; same locality; 18°48'28.1"S, 57°30'25.9"W; 17. xi. 2013; F. L. Carvalho; CCDB 5014 View Materials GoogleMaps • 4 ♂♂ 3 ♀♀; Vermelho River, tributary of the Miranda River, Corumbá, next to Paço do Lontra ; 6. ix. 1998; C. Magalhães et al.; INPA 1308 View Materials • 1 ♂ 2 ♀♀; Negro River, next to rodovia Nhecolândia-BR 262, Corumbá ; 19°17.1'S, 57°3.3'W; 8. ix. 1998; C. Magalhães et al.; INPA 1309 View Materials GoogleMaps • 2 ♂♂ 6 ♀♀; Porto Murtinho ; 24. viii. 2010; F. L. Mantelatto; CCDB 2972 View Materials • 9 ♂♂ 6 ♀♀; Miranda, Pantanal sul-matogrossense ; 09. vii. 2019; J. A. F. Pantaleão; CCDB 6470 View Materials • 2 ♂♂; 30 km NW de Miranda, Pantanal sul-matogrossense ; 24. vii. 1982; L. F. B. de Oliveira; UFRGS 3425 View Materials • 1 ♂; Paiaguás, Fazenda Milagre ; 19. vii. 1986; F. R. Antonelli; MZUSP 8012 View Materials • 3 ♂♂ 3 ♀♀; Miranda River, Base de Pesquisa do Pantanal da UFMS, 4. viii. 1989; A. C. Marini; MZUSP 9889 View Materials • 4 ♂♂ 2 ♀♀; Lagoon next to BR–262, Miranda ; 11. vi. 1993; MZUSP 11534 View Materials • 6 ♂♂ 12 ♀♀; Surroundings of the city of Miranda ; 5. iv. 2012; MZUSP 25939 View Materials • 2 ♂♂ 2 ♀♀; Corumbá, Right margin of Paraguay River, Base Experimental da UFMS , MZUSP 25174 View Materials — São Paulo: • 1 ♂; Bebedouro ; 21. xii. 2009; R. J. Ilário; UFRGS 4565 View Materials • 8 ♂♂ 2 ♀♀; Paraná River, Castilho ; 23. ix. 2017; T. Magalhães; CCDB 6338 View Materials • 1 ♂; Pardo River, sub-basin of Grande River, Colômbia ; 20°10'0.87"S, 48°36'8.35"W; 24. vii. 2000; F. L. Mantelatto; CCDB 1461 View Materials GoogleMaps • 2 ♂♂; Viradouro, Basin of Mogi – Guaçu River, Fazenda Três Barras ; 20°54'48.9"S, 48°10'29.6"W; 11. viii. 2000; W. Avelar; INPA 872 View Materials GoogleMaps • 1 ♂ 1 ♀; Morro Agudo ; 20°47'11"S, 48°01'28"W; 09. iii. 2020; N. França, G. Faganello, E. Santos and L. Rogeri; CCDB 6622 View Materials GoogleMaps • 2 ♂♂; same locality; 20°47'11"S, 48°01'28"W; 16. iii. 2020; N. França, G. Faganello, E. Santos and L. Rogeri; CCDB 6623 View Materials GoogleMaps • 1 ♂; Ribeirão Preto, lake of USP-RP ; 21°10'06.31"S, 47°51'26.44"W; 01. iv. 2005; E. Mossolin; CCDB 2796 View Materials GoogleMaps • 8 ♂♂ 3 ♀♀; Ribeirão Preto, Dam of Galo Bravo ; 21°07'06.72"S, 47°49'30.32"W; 3. iv. 2013; E. C. Mossolin, M. Negri, T. Magalhães and R. C. Buranelli; CCDB 4603 View Materials GoogleMaps • 5 ♂♂ 4 ♀♀; Tietê River, Campo Grande ; viii. 2019; A. P. Covich; CCDB 6501 View Materials • 2 ♂♂ 1 ♀; São José do Rio Preto, municipal reservoir Rio Grande Basin ; 20°48'27"S, 49°21'54.9"W; 12. x. 1999; M. A. A. Pinheiro and G. Y. Hottori; INPA 774 View Materials GoogleMaps • 2 ♂♂; Viradouro. Basin of Mogi Guaçu River, Fazenda Três Barras ; 20°54'48.9"S, 48°10'29.6"W; 11. viii. 2000; W. Avelar; INPA 872 View Materials GoogleMaps • 3 ♂♂ 3 ♀♀; Sertãozinho, Usina São Geraldo ; 7. iii. 2008; F. L. Mantelatto, E. C. Mossolin and A. S. Costa; CCDB 3108 View Materials • 1 ♀; Teodoro Sampaio ; 20. ix. 2019; LEPIB; MZUEL 508 • 2 ♀♀; Mogi – Guaçu River, Barrinha ; 12. x. 1999; M. A. A. Pinheiros and G. Y. Hattori; MZUSP 13099 View Materials • 6 ♂♂ 2 ♀♀; São José do Rio Preto ; 12. x. 1999; M. A. A. Pinheiros and G. Y. Hattori; MZUSP 13100 View Materials • 3 ♂♂; Colômbia ; 20°10'17.0"S, 48°36'13.5"W; 24. vii. 2000; W. Avelar; MZUSP 13915 View Materials GoogleMaps • 3 ♂♂; Rio Grande, between the cities of Mira Estrela and Cardoso ; 20°01'51.7"S, 50°00'59.9"W; 23. i. 2003; S. Bueno, S. Rocha and E. Mossolin; MZUSP 15581 View Materials GoogleMaps • 1 ♂ 2 ♀♀; Turvo River, between the cities of Cardoso and Riolândia ; 23. i. 2003; S. Bueno, S. Rocha and E. Mossolin; MZUSP 15592 View Materials • 1 ♀; Pardo River, between the cities of Guaíra and Barretos ; 24. i. 2003; MZUSP 15593 View Materials • 3 ♂♂ 2 ♀♀; Turvo River, between the cities of Icem and São José do Rio Preto ; 20°25'07.1"S, 49°16'03"W; 23. i. 2003; S. Bueno, S. Rocha and E. Mossolin; MZUSP 15595 View Materials GoogleMaps • 6 ♂♂; Mogi – Guaçu River, Barrinha ; 20°11'09"S, 48°10'35"W; 25. i. 2003; S. Bueno, S. Rocha and E. Mossolin; MZUSP 15597 View Materials GoogleMaps • 4 ♂♂ 1 ♀; Palestina, Fazenda São Pedro do Turvo ; 4. xi. 2005; A. M. Juares; MZUSP 16920 View Materials • 1 ♂; same locality; 4. x. 2005; A. M. Juares; MZUSP 16924 View Materials • 2 ♀♀; Guapiaçu ; 15. xii. 2005; A. M. Juares; MZUSP 16921 View Materials • 26 ♂♂ 1 ♀; Guapiaçu, Fazenda Pepelin ; 15. xii. 2005; A. M. Juares; MZUSP 16922 View Materials • 8 ♂♂ 2 ♀♀; Guapiaçu ; 15. xii. 2005; A. M. Juares; MZUSP 17212 View Materials • 21 ♂♂ 9 ♀♀; Guapiaçu, Pesqueiro Pepelin ; 10. vi. 2007; A. M. Juares; MZUSP 18340 View Materials • 5 ♂♂ 6 ♀♀; Santa Albertina, Pousada Bacuri ; 19°57'S, 50°45'W; 31. x. 2009; P. H. Carvalho; MZUSP 20488 View Materials GoogleMaps • 1 ♂; São José do Rio Preto, Dam of Rio Preto ; 1. viii. 1994; F. G. Taddei; MZUSP 26391 View Materials • 8 ♂♂ 5 ♀♀; Santa Albertina, Pousada Bacuri, Córrego Schmitt ; 19°58'38.78"S, 50°46'43.01"W; 7. ix. 2012, M, Cardoso Jr., R. Garcez and C. E. Lopes; MZUSP 27898 View Materials GoogleMaps — Paraná: • 1 ♂ 1 ♀; Basin of Paranapanema River, em lagos, Fazenda Doralice, Londrina ; 22. vi. 2002; E. M. Amado; INPA 894 View Materials • 2 ♂♂; Teodoro Sampaio ; 20. ix. 2019; LEPIB; MZUEL 509 • 3 ♂♂ 2 ♀♀; Porto Rico, Lagoa das Garças ; 22°45'27"S, 53°16'13"W; 19. ix. 2010; PELD; MZUSP 24316 View Materials GoogleMaps • 1 ♂; Cornélio Procópio, Lago São Luiz ; 22. i. 2019; L. Gustavo; MZUSP 42441 View Materials . PARAGUAY • 3 ♂♂; Paraguay River, Puerto Voluntad ; 6. ix. 1997, C. Magalhães; INPA 1311 View Materials • 2 ♂♂ 2 ♀♀; Paraguay River, Puerto Lidia ; 20°54'S, 57°55'W; 7. ix. 1997; C. Magalhães et al.; INPA 1312 View Materials GoogleMaps • 2 ♂♂; Paraguay River, carca de la desembocadura del rio Aquidabán ; 23°7'S, 57°38'W; 17. ix. 1997; C. Magalhães; INPA 1313 View Materials GoogleMaps • 2 ♂♂ 2 ♀♀; Presidente Hayes; MZUSP 25923 View Materials • 2 ♀♀; Caaguazu, Road of Coronel Oviedo ; 7. iii. 1996; D. W. Fromm and P. A. Fromm; MZUSP 25929 View Materials . ARGENTINA — Formosa • 1 ♂; Río Pilcomayo National Park ; xi. 1990; INPA 1304 View Materials — Chaco • 1 ♀; Chaco, Barranqueiras ; 27. x. 1961; P. Vanzolini; MZUSP 1793 View Materials — Santa Fe • 1 ♂; Paraná River, near Santa Fe ; 14. xii. 2012; C. Magalhães, P. Collins and D. Carvalho; INPA 2130 View Materials .

Remarks.

The upper clade in the phylogram of Fig. 1 View Figure 1 groups all the specimens distributed in the Paraguay – Paraná river system, to which the name D. pagei is available. The holotype of D. pagei is a dried female specimen (see Magalhães and Türkay 2008: 191, fig. 8 a) but males of the populations distributed in these southern basins have a G 1 morphology like the one illustrated by Bott (1969: pl. 20, fig. 47) for a specimen from the Paraguay River ( SMF 4407). The morphology of this G 1 is coincident with that described above, i. e., with a continuous ventral margin and a weakly-developed subdistal lobe (Fig. 5 A, B View Figure 5 ).