Gyropeltis longicauda HELLER (1857) : 101 Gyropeltis doradis CORNALIA (1860) : 13 G. longicauda KRøyER (1863) : 25 G. longicauda G. doradis THORELL (1864) : 64 D. longicauda Dolops doradis BOUVIER (1899) : 13 D. longicauda D. doradis WILSON (1902) : 704 D. longicauda THIELE (1904) : 14 MOREIRA (1912) : 149 MOREIRA (1913) : 10 LAHILLE (1926) : 11 THATcHER (2006) : 393 A new species of Argulus (Crustacea, Branchiura, Argulidae) from the skin of catfish, with new records of branchiurans from wild fish in the Brazilian Pantanal wetland Tavares, Luiz E. R. Zootaxa 2017 2017-09-18 4320 3 447 469 (Heller, 1857) Heller 1857 [151,553,1077,1103] Maxillopoda Argulidae Dolops GBIF Animalia Arguloida 17 464 Arthropoda species longicauda     Gyropeltis longicauda HELLER, 1857  HELLER (1857): 101–102, PL. I, fIGS. 1–19;  Gyropeltis doradis, CORNALIA, 1860:  CORNALIA (1860): 13–14, fIGS. 1–18;  G. longicauda:  KRøyER (1863): 25–28, PL. I, fIGS. 4A–E;  G. longicaudaAND  G. doradis:  THORELL (1864): 64;  D. longicaudaAND  Dolops doradis:  BOUVIER (1899): 13, 21–35, fIGS. 31–38;  D. longicaudaAND  D. doradis:  WILSON (1902): 704, 732–733, 734, PL. XV, fIGS. 75–76;  D. longicauda:  THIELE (1904): 14–17, fIGS. 16–25;  MOREIRA (1912): 149, PL. III, fIG. 3;  MOREIRA (1913): 10, PL. V, fIG. 1;  LAHILLE (1926): 11, fIGS. 8–9; LEMOS DE CASTRO (1985): 12, 56;  THATcHER (2006): 393, 396, 400, fIG. 9.25.    Typehost.  Hydrocyon brevidens(=  Salminus brasiliensis[Cuvier 1816]) ( Heller 1857)    Typelocality. FLONA de Ipanema, Sorocaba RiverBasin, municipality of Iperó, region of Sorocaba, state of São Paulo, Brazil(see remarks)  Other hosts and localities.  Aequidens tetramerus(Heckel, 1840), Limoncocha, near the junction of the Jivino and Naporivers, Ecuador( Hugghins 1970), Igarapé Fortaleza, Amazon River Basin, Macapá, Amapá, Brazil(Tavares-Dias et al.2014);  S. brasiliensis(syn.  S. brevidens,  S. maxillosus,  Salminus cuvieri,  H. brevidens), Province Entre Riosin ParanaRiver Basin, Arroyo de las Conchas, Corpus, Rio Colastiné, Santa Fé, Zona de Rosario, in UruguayRiver Basin, Gualeguaychú, Ibicuycito, Missiones, in de la Plata River, Argentina( NMNH2014; Ringuelet 1943, 1948),  ParaguayRiver, Corumba, Cáceres, state of Mato Grosso, Pirassununga, Mogi Guaçu River state of São Paulo, Brazil( Calman 1912; Morais Filho & Schubart 1955; Moreira 1912, 1913);  Metynnis lippincottianus(Cope, 1870), Igarapé Fortaleza, Amazon River Basin, Macapá, Amapá, Brazil(Tavares- Dias et al.2014);  Oxydoras kneriBleeker, 1862 ( Ringuelet 1943);  Oxydoras niger(Valenciennes, 1821), Amazon River Basin, Brazil( Bouvier 1899; Thatcher 2006);  Potamotrygonsp.,  Santa FeProvince, ParanaRiver, Rosario, Argentina( Ringuelet 1948);  P. corruscans,  Santa FeProvince, ParanaRiver, Rosario, Argentina( Ringuelet 1948);  Pterodoras granulosus(Valenciennes, 1821) ( Ringuelet 1943);  S. maculatus, Caiçarabays, upper  ParaguayRiver basin, Northern Pantanal, Cáceres, state of Mato Grosso, Brazil( Fontana et al.2012);  Serrasalmus nattereri(=  P. nattereri), ParanaRiver, zona de Rosario, Argentina( Ringuelet 1943);  Serrasalmussp., Limoncocha, near the junction of the Jivino and Naporivers, Ecuador( Hugghins 1970).   FIGURE 11.FEMALE Of  Dolops longicauda. A fIRST (A1) AND SEcOND (A2) B MOUTH TUbE (LAbI: LAbIUM; LAbR: LAbRUM; M: MANDIbLES) C SEcOND MAXILLAE (SE: SENSILLUM; S1–4: SEGMENTS) D fIfTH (S5) AND SIXTH (S6) SEGMENTS Of THE SEcOND MAXILLAE ANTENNAE E SETA-LIKE STRUcTURE (SLS) IN THE fIRTS MAXILLAE F ANAL PAPILLAE (VENTRAL VIEW). ScALE bAR = A 0.5MM, B–C 0.25MM, D– F 0.1MM  Material deposited.21 vouchers: 5 adultfemale and 5 adultmale ZUEC-CRU3518, 5 adultfemale and 2 adultmale INPA2309, 6 July 2008; 2 adultfemales and 2 adultmales MZUSP36231, 8 July 2009, in ethanol 70%,  Salminus brasiliensis, skin, Cuiabá River Cuiabá River, Parque Nacional do Pantanal Matogrossense, Mato Grosso, Brazil( 17°49′37.77″ S, 57°22′53.38”W)   Measurements.Based on 6 malesand 18 females. Total length (mm) 20.2 (13.5–25) in males, 22 (11.2–36.5) in females. Carapace length 7.7 (5.6–9.3) in males, 8.8 (5.7–13.7) in females; maximum carapace width 7.9 (4.6– 10) in males, 9.4 (6.1–15) in females. Carapace posterior sinus length 2.2 (1.1–3.3) in males, 3.2 (1.5–4.9) in females; width 2.2 (1.7–2.8) in males, 3.3 (1.8–6) in females. Cephalothorax length 4.7 (2.6–5.8) in males, 5.1 (3.1–8.2) in females; anterior width 4.6 (2.6–5.6) in males, 5.2 (4.3–7.3) in females. Abdome length 13.9 (9.6–18) in males, 12.9 (8.9–22) in females; width 3.3(2.1–3.9) in males, 3.8 (2.7–6) in females. Abdome posterior sinus length 11.8 (8.5–13.8) in males, 12.4 (4.7–20) in females; width 2.4 (1–3.4) in males, 2.8 (0.4–7.8). Eyes diameter (µm) left 274.5 (225–289) and right 283.4 (200–350), in male, left 267.8 (224–300) and right 278.4 (212–350) in female; transverse distance between eyes (µm) 2156.7 ( 1850–2768) in male, 2377.5 (1400–3651) in female. First maxillae length 2 (0.9–2.9) left and 2 (1–3) right in males, 2 (1.1–4.2) left and 2.3 (1.3–4.5) right in females; Hook of the first maxillae length (µm) 1072.5 (875–1300) left and 1156.6 (825–1300) right in males, 1281 (836.6–1450) left and 1366.5 ( 1019–1900) in females. Seta-like structure length (µm) 151 (129–178, n = 4) left and 170.8 (118.8–198, n = 4) right in males, 186.5 (138.6–243, n = 16) left and 201.7 (158.4–297, n = 16) right in females.   Remarks.The first and second antennae of  D. longicaudaare located in a groove in the cephalon, as others species of  Dolops(Avenant et al.1989; Silva-Souza et al.2011). Nevertheless, the first antennae of  D. longicaudais 4-segmented ( Fig. 11A), a characteristic shared with some South American species of  Dolops. The basal segment of the first antennae of  D. longicaudadoes not have any projections or spines, being bar-shaped with expanded ends, which Ringuelet (1943)described as “…un refuerzo o rodete no saliente cerca del borde posterior…”. The proximal part of the second segment also does not have any projections or spines, similar to what we observed in  D. carvalhoi. The labrum ( Fig. 11B) in mouth tube in  D. longicauda, and probably other species of the genus, arise anteriorly, deeper than in species of  Argulus. The second maxillae of  D. longicaudais 6-segmented ( Fig. 11C). The sixth segment bears five pairs of hooks or claws ( Fig. 11D), with the distal one the larger. These decrease proximally, so that the most proximal resemble spines.  Heller (1857)described  D. longicaudawhen he proposed  Gyropeltis Heller, 1857, later synonymized with  Dolopsby Bouvier (1899). Before Bouvier’s observations, Krøyer (1863), examined the typespecimen, a female deposited by Vincent Kollar at the Natural History Museum of Vienna, as “  Dixiphurus brasiliensis”. An additional note on the typespecimen in Johann Natterer's iternary revealed the old “Fábrica de Ferro São João do Ipanema” or Fundição Ipanema, nowadays a national forest known as FLONA de Ipanema, in the municipality of Iperó in the region of Sorocaba, in the state of São Paulo, as the typelocality for this species (Peter C. Dworschak, pers. comm. March 2015). In this note by Natterer, a river called “Seruaba” was mentioned as the hydrographic system where the typespecimen was recovered. Although we could not identify this river, it is probable that the Sorocaba River is the hydrographic basin of the typelocality. The morphology, the length and especially the length of the abdomen of the specimens of  D. longicauda, made its diagnosis easier. Additionally, there is a structure similar to an additional flagella on the second leg of the male, inserted in the dorsal side of the coxa and laterally directed, which Ringuelet (1943)also indicated, removing any doubts about the identification of  D. longicauda. 1638540584 FLONA de Ipanema Brazil Sorocaba River River Basin 17 464 1 Sao Paulo holotype