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Fig. 12. Tatia musaica, MBUCV V-15663, 47.1 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 12. Tatia musaica, MBUCV V-15663, 47.1 mm SL, morphologically similar centromochlin species from the Guiana Shield in Amazonas, Venezuela. Photo by C. DoNascimiento and N. Milani. Copyright© F. Provenzano and Museo de Biologia de la Universidad Central de Venezuela. Available at http://acsi.acnatsci.org/

Fig. 11 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 11. Igarapé Jamari, type locality of Centromochlus orca, rio Nhamundá basin, middle Amazonas basin, municipality of Terra Santa, Pará State, Brazil. Photo by H. Lazzarotto.

Fig. 7 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 7. Pharyngeal arches of Centromochlus orca, INPA 35086, paratype, 54.1 mm SL. Dorsal view. Abbreviations: bb2-4, basibranchials 2 to 4 (anterior to posterior); cb1- 5, ceratobranchials 1 to 5 (anterior to posterior); eb1- 4, epibranchials 1 to 4 (anterior to posterior); hb1-3, hypobranchials 1 to 3; pb3, pharingobranchial 3; pb4, pharingobranchial 4. Scale bar = 1 mm.

Fig. 5 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 5. Anterior vertebrae and associated bones, ventral view, of a. Centromochlus orca, INPA 35086, paratype, 54.1 mm SL. b. Tatia melanoleuca, MZUSP 30585, 53.0 mm SL. c. Centromochlus heckelii, MZUSP 8336, 62.0 mm SL. Abbreviations: n3, posterior nuchal plate, boc, basioccipital, cv, complex vertebra, Pv4, parapophysis of fourth vertebra, Pv5, parapophysis of fifth vertebra, Pv6, parapophysis of sixth vertebra, os, os suspensorium, rib, precaudal rib, scl, trans-scapular process of posttemporal-supracleithrum, tr, tripus. Scale bar = 1 mm.

Fig. 6 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 6. Right hyoid arch of Centromochlus orca, INPA 35086, paratype, 54.1 mm SL. Ventral view. Abbreviations: ac, anterior ceratohyal; br, branchiostegal rays; dh, dorsal hypohyal; ih, interhyal; pc, posterior ceratohyal; vh, ventral hypohyal; uh, urohyal; up, urohyal ventral process. Scale bar = 1 mm.

Fig. 4 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 4. Right suspensorium, lateral view, of a. Centromochlus orca, INPA 35086, paratype, 54.1 mm SL. b. Tatia musaica, MBUCV-V 17727, paratype, 24.3 mm SL. Abbreviations: aa, angulo-articular; dn, dentary; hm, hyomandibula; io, interopercle; mt, metapterygoid; en, endopterygoid; op, opercle; po, preopercle; qu, quadrate; sb, subpreopercle; sp, suprapreopercle. Scale bar = 1 mm.

Fig. 3 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 3. Head in lateral view of a cleared and stained specimen of Centromochlus orca, MBML 11221, 50.6 mm SL. Photo by L. Sarmento-Soares. Abbreviations: bmx, maxillary barbel; io1, first infraorbital; io5, posterior ossified infraorbital; mx, maxilla; pmx, premaxilla; sph, sphenotic.

Fig. 2 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 2. Neurocranium of Centromochlus orca, INPA 35086, paratype, 54.1 mm SL. Dorsal view. Abbreviations: Dsp, dorsal fin spinelet; Epo, epiotic; Epop, epiotic process; Fro, frontal; io1, first infraorbital; io5, posterior ossified infraorbital; Le, lateral ethmoid; Mes, mesethmoid; Nas, nasal; Np2, middle nuchal plate; Np3, posterior nuchal plate; Pto, pterotic; Scl, posttemporal-supracleitrum; Soc, parieto-supraoccipital; Sop, suprapreopercle; Sph, sphenotic. Scale bar =1 mm.

Fig. 1 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil

Fig. 1. Centromochlus orca, new species, holotype, INPA 50870, female, 56.8 mm SL, mouth of Igarapé Jamari with lago de Terra Santa, rio Nhamundá basin, middle Amazonas basin, Pará State, Brazil. Lateral (a), dorsal (b) and ventral (c) views.

Fig. 9 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 9. Caudal skeleton in lateral view of Liosomadoras oncinus, MZUSP 105828, 99 mm SL. EP = epural, H = hypurapophysis, HS = hemal spine, HY = hypural, NS = neural spine, PH = parhypural, PS = pleurostyle, PU1+U1 = fused first preural and first ural centra, PU2 = second preural centra. Scale bar = 5 mm.

Fig. 2 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 2. Liosomadoras oncinus: (a) specimen purchased on the Aquarium trade in Montreal (photo by Oliver Lucanus); (b) and (d) AUM uncatalogued, collected with MZUSP 105828 (photo by Nathan Lujan); (c) MZUSP 105828 (nuptial male), río Ventuari, Orinoco basin. All photographed live.

Fig. 6 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 6. Pectoral girdle in ventral view of Liosomadoras oncinus, MZUSP 105828, 99 mm SL. Scale bar = 5 mm.

Fig. 4 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 4. Tympanic area in lateral view of Liosomadoras oncinus, MZUSP 93497, 74.8 mm SL. Scale bar = 10 mm.

Fig. 10 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 10. Distribution of the species of Liosomadoras, L. oncinus represented by yellow circles, and L. morrowi by red squares. Type locality represented by open symbols.

Fig. 5 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 5. Schematic illustration of the hyoid and branchial arches in dorsal view of Liosomadoras oncinus, based on MZUSP 93497, 70.7 mm SL. Left side of dorsal branchial arches omitted for ease of understanding. Urohyal and branchiostegal rays not represented. AC = anterior ceratohyal, BBn basibranchials, CBn = ceratobranchials, cn = cartilaginous nodule, DH = dorsal hypohyal, Epn = epibranchials, HBn = hypobranchials, IH = interhyal, PBn = pharyngobranchials, PC = posterior ceratohyal, UPTP = upper pharyngobranchial tooth plate, VH = ventral hypohyal. Scale bar = 5 mm.

Fig. 3 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 3. Head in dorsal (a) and lateral (b) view of Liosomadoras oncinus, MZUSP 105828, 99 mm SL.AAR = angulo-articular, acf anterior cranial fontanel; ANP anterior nuchal plate, CLE = cleithrum, COR = coracoid, DEN = dentary, ENT = entopterygoid, EPO = epioccipital, FRO = frontal, HYO = hyomandibular, IO = infra-orbital, IOP = interopercle, LET = lateral ethmoid, MAX = maxilla, MES = mesethmoid, MNP = middle nuchal plate, Mr Müllerian ramus, MTP = metapterygoid, OPE = opercle, PNP = posterior nuchal plate, POP = preopercle, PTO = pterotic, QUA = quadrate, SCL = posttemporo-supracleithrum, SOC = parietosupraoccipital, SPO = sphenotic. Scale bar = 5 mm.

Fig. 7 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 7. Schematic illustration of the pelvic girdle in dorsal view of Liosomadoras oncinus, based on MZUSP 105828, 101 mm SL. Scale bar = 5 mm.

Fig. 8 in Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

Fig. 8. Anal fin in lateral view of a nuptial male of Liosomadoras oncinus, MZUSP 105828, 99 mm SL. Scale bar = 5 mm.

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FIGURE 6 in Description of a new species of Tatia from rio Tocantins drainage, central Brazil, with notes on Tatia simplex Mees, 1974 (Siluriformes, Auchenipteridae)

FIGURE 6 | Distribution of Tatia akroa (yellow) and T. simplex (orange). Stars represent type localities.