taxonID	type	description	language	source
906587D74E69FF97FE8AF38BE872F895.taxon	description	Type-host and type locality: Aspistor luniscutis (Valenciennes, 1840) Site: Gills. Type-locality: Fish market, Municipality of Paranaguá, State of Paraná, Brazil (1996). Specimens deposited: Holotype, MZUSP 6357; 8 paratypes, CHIOC 36823 a – b, MZUSP 6358 a – d, USNPC 98921.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E69FF97FE8AF38BE872F895.taxon	etymology	Etymology: The specific name is related to the first record of Chauhanellus for the marine Neotropical region.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E69FF97FE8AF38BE872F895.taxon	description	Description (based on 9 adult specimens): Body 680 (n = 1) long, fusiform, greatest width 131 (122 – 139; n = 2) usually at level of germarium. Tegument smooth. Cephalic lobes moderately developed; three pairs of head organs; cephalic glands posterolateral to pharynx. Eyes 4; posterior pair slightly larger and closer than anterior pair; accessory granules absent in cephalic area. Mouth subterminal, midventral; pharynx ovate, 39 (36 – 43; n = 2) in diameter; esophagus short; intestinal ceca two, nonconfluent, lacking diverticula. Haptor subspherical, 113 (108 – 118; n = 2) long, 128 (113 – 144; n = 2) wide. Anchors dissimilar; ventral anchor 54 (50 – 60; n = 7) long, base 43 (30 – 50; n = 7) wide, robust, with truncate superficial root, deep root expanded into wings, recurved shaft, short slightly recurved point. Dorsal anchor 62 (55 – 66; n = 7) long, base 30 (26 – 35; n = 7) wide, robust, with inconspicuous superficial root, expanded deep root, evenly curved shaft and point; anchor spine blunt. Ventral bar 9 (n = 2) long, 73 (72 – 74; n = 2) wide, posterior ends with foot-like protuberances for articulation with ventral anchors. Dorsal bar, V-shaped, with spines on both ends, elongate posteromedial process. Hooks similar in shape, 16 (14 – 17; n = 14) long, with erect thumb, evenly curved, shaft, point, shank without inflation, filamentous hook loop (FH loop) about half shank length. Male copulatory organ sclerotised, a coiled tube with 1 ¼ counterclockwise rings, 135 (110 – 155; n = 8) long; male copulatory organ base with sclerotised margin, distal acute tip, proximal ring diameter 29 (23 – 39; n = 4). Accessory piece, comprising a long sheath. Testis 58 (91 (74 – 108; n = 2) long, 58 (55 – 60; n = 2) wide, pyriform; seminal vesicle sigmoid; prostatic reservoir spherical. Germarium 70 (55 – 84; n = 23) long, 30 (29 – 31; n = 2) wide, elongate. Ootype not observed. Vaginal aperture dextral, vagina muscular. Seminal receptacle transversely pyriform. Vitellaria coextensive with caeca. Eggs not observed.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E69FF97FE8AF38BE872F895.taxon	discussion	Remarks: Chauhanellus neotropicalis n. sp. differs from all other congeneric species by the combined presence of the following features: (1) male copulatory organ, a coiled	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E6FFF92FE8AF393EF80FD1A.taxon	description	Type-host: Genidens barbus (Lacepède, 1803). Site: Gills. Type-locality: Baía de Guaratuba, Municipality of Guaratuba, State of Paraná, Brazil (01 – XII – 1998). Other records: Genidens genidens (Cuvier, 1829), Baía de Guaratuba, Municipality of Guaratuba, State of Paraná, Brazil (05 – I – 1994). Specimens deposited: Holotype, MZUSP 6354; 19 paratypes, CHIOC 36821 a – e, MZUSP 6355 a – k, USNPC 98919; 8 vouchers, CHIOC 36822 a – b, MZUSP 6356 a – d; USNPC 98920.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E6FFF92FE8AF393EF80FD1A.taxon	etymology	Etymology: The specific name is in honor of Dr. Walter A. Boeger, Universidade Federal do Paraná, Brazil, in recognition of his valuable work on the Neotropical Monogenoidea. Comparative measurements: Table 1.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E6FFF92FE8AF393EF80FD1A.taxon	description	Description: (Based on 20 adult specimens) Body 1028 (940 – 1100; n = 5) long, fusiform; greatest width 143 (125 – 163; n = 8) usually at level of germarium. Tegument smooth. Cephalic lobes moderately developed; three pairs of head organs; cephalic glands unicellular, posterolateral to pharynx. Eyes 4; posterior pair closer than anterior pair; accessory granules absent or few in cephalic area. Mouth subterminal, midventral; pharynx spherical to subovate, 57 (48 – 65; n = 7) in diameter; esophagus short; intestinal ceca two, nonconfluent, lacking diverticula. Haptor subspherical to hexagonal, 202 (173 – 234; n = 4) long, 133 (144 – 168; n = 4) wide. Anchors dissimilar; ventral anchor 71 (61 – 75; n = 4) long, base 61 (59 – 64; n = 4) wide, robust, with truncate superficial root, deep root expanded into wings, recurved shaft, short slightly recurved point. Dorsal anchor 85 (82 – 87; n = 4) long, base 35 (32 – 40; n = 3) wide, robust, with inconspicuous superficial root, expanded deep root, evenly curved shaft and point; anchor spine blunt. Ventral bar 30 (28 – 31; n = 3) long, 154 (139 – 166; n = 3) wide, with protuberances at each end for articulation with ventral anchor; posterior protuberances foot-like. Dorsal bar 28 (25 – 33; n = 3) long, 112 (103 – 120; n = 2) wide, V-shaped, with spines on both ends, elongate posteromedial process bent ventrally. Hooks similar; each 16 (14 – 18; n = 20) long, with depressed thumb, evenly curved, shaft, delicate point, shank without inflation, filamentous hook loop (FH loop) about half of shank length. Male copulatory organ sclerotised, a coiled tube of about 1 ¼ counterclockwise rings, 67 (61 – 75; n = 15) long, base with sclerotised margin, flattened end; proximal ring diameter 22 (19 – 26; n = 15). Accessory Genidens barbus N Genidens genidens N Body piece a variable sheath. Testis 206 (163 – 300; n = 8) long, 82 (72 – 101; n = 9) wide, pyriform; seminal vesicle sigmoid; prostatic reservoir ovate. Germarium 83 (72 – 96; n = 8) long, 60 (50 – 72; n = 8) wide, subspherical. Ootype not observed. Vaginal aperture dextral, vagina muscular. Seminal receptacle transversely ovate. Vitellaria coextensive with caeca. Eggs not observed.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
906587D74E6FFF92FE8AF393EF80FD1A.taxon	discussion	Remarks: Chauhanellus boegeri n. sp. resembles C. neotropicalis based on the general morphology of haptoral structures. However, C. boegeri can be distinguished from C. neotropicalis by the morphology of the male copulatory organ. The distal tip of the male copulatory organ is flattened in C. boegeri and acute in the C. neotropicalis. Further, the morphology of the germarium (ovate in C. boegeri, pyriform in C. neotropicalis) and the seminal receptacle (transversely pyriform in C. boegeri, sigmoid in C. neotropicalis) can be used to distinguish both species.	en	Domingues, Marcus V., Fehlauer, Karin H. (2006): New species of Chauhanellus (Monogenoidea, Platyhelminthes) from the gills of Southern Atlantic marine catfishes (Siluriformes, Ariidae) of the Neotropical region. Zootaxa 1365: 61-68, DOI: 10.5281/zenodo.174788
