Consulta: creatorFacets:"Isbrücker, I.J.H."
Registros recuperados: 38
Data/hora: 04/06/2024 17:09:24

Lepidarchus adonis signifer, a new subspecies of characoid fish from Liberia (Pisces, Cypriniformes, Characidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
Description of a new subspecies of Lepidarchus adonis, L. a. signifer, from Liberia, differing mainly in its colour pattern from the nominal subspecies from Ghana.
Tipo: Article / Letter to the editor
Ano: 1970
URL: http://www.repository.naturalis.nl/record/505051

Dentectus barbarmatus, a new genus and species of mailed catfish from the Orinoco Basin of Venezuela (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Martin Salazar, F.J.; Isbrücker, I.J.H.; Nijssen, H.
Dentectus barbarmatus, a new genus and species of mailed catfish of the subfamily Loricariinae, tribe Loricariini, is described from tributaries of the northern margin of the Orinoco River in Venezuela. Morphometric and meristic data of several specimens are presented and illustrations are given. The relationships of the new genus with other genera of the tribe are discussed. It is assigned to the subtribe Planiloricariina, together with Pseudohemiodon Bleeker, 1862, Rhadinoloricaria Isbrücker &amp; Nijssen, 1974, Crossoloricaria Isbrücker, 1979, and Planiloricaria Isbrücker, 1971.
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/504740

Rineloricaria castroi, a new species of Mailed Catfish from Rio Trombetas, Brazil (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Rineloricaria castroi n. sp. from Rio Trombetas, Est. Pará, Brazil, is described and illustrated. It is compared with R. phoxocephala (Eigenmann &amp; Eigenmann, 1889) from Rio Amazonas at Coari, Est. Amazonas, Brazil, which species is here illustrated for the first time.
Tipo: Article / Letter to the editor
Ano: 1984
URL: http://www.repository.naturalis.nl/record/505023

Two new species of the callichthyid catfish genus Corydoras from Brazil (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
This paper contains descriptions and figures of two new species of the neotropical callichthyid catfish genus Corydoras Lacépède, 1803, from Brazil, Corydoras pulcher from Rio Purus, north of Lábrea, Est. Amazonas, and Corydoras steindachneri from Paranaguá, Est. Paraná. The relationships of the new species with other species of Corydoras are discussed.
Tipo: Article / Letter to the editor
Ano: 1973
URL: http://www.repository.naturalis.nl/record/504870

Gymnotus carapo and G. anguillaris (syn.: G. coropinae), two often confused species of gymnotid fishes (Pisces, Cypriniformes)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
The species Gymnolus anguillaris Hoedeman, 1962 has been collected all over Surinam. The authors suggest the possibility that G. anguillaris is widely distributed in South America, because it is hitherto confused with the closely related G. carapo Linnaeus, 1758. Besides it is proved that G. coropinae Hoedeman, 1962 has to be regarded as a synonym of G. anguillaris.
Tipo: Article / Letter to the editor
Ano: 1968
URL: http://www.repository.naturalis.nl/record/504834

A redescription of the South American Catfish Loricariichthys maculatus (Bloch, 1794), with designation of the lectotype and restriction of its type locality (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
The type species of the genus Loricariichthys Bleeker, 1862, Loricariichthys maculatus (Bloch, 1794), is redescribed from two syntypes, one of which is designated the lectotype. The same specimen is also designated the neotype for Plecostomus cataphracta Gronovius (ed. Gray), 1854 (non Loricaria cataphracta Linnaeus, 1758, sensu stricto). The type locality of both nominal species is restricted after a comparison to specimens recently collected from a locality in Surinam.
Tipo: Article / Letter to the editor
Ano: 1971
URL: http://www.repository.naturalis.nl/record/503968

The South American Plated Catfish genus Aspidoras R. von Ihering, 1907, with descriptions of nine new species from Brazil (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
The South American callichthyid catfish genus Aspidoras R. von Ihering, 1907, is redefined on the basis of thirteen nominal species. Morphological differences with the related genus Corydoras Lacépède, 1803, are discussed. Two species originally described in Corydoras, viz., Corydoras raimundi and Corydoras pauciradiatus are herein transferred to Aspidoras. Aspidoras now consists of the following previously described nominal species: (1) Aspidoras rochai R. von Ihering, 1907 (type-species of the genus), known from Brazil, Est. Ceará, Fortaleza, (2) Aspidoras raimundi (Steindachner, 1907) from Brazil, Est. Maranhão, Rio Parnaíba system, (3) Aspidoras lakoi P. de Miranda Ribeiro, 1949, from Brazil, Est. Minas Gerais, Rio Paranaíba system, and (4) Aspidoras...
Tipo: Article / Letter to the editor
Ano: 1976
URL: http://www.repository.naturalis.nl/record/504152

Pseudohemiodon thorectes, a new species of Mailed Catfish from the Rio Mamoré system, Bolivia (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
Pseudohemiodon thorectes, a new species of Mailed Catfish of the subfamily Loricariinae, is described and figured after the holotype (the only known specimen), originating from Buena Vista, west of Rio Palacios, a tributary of Rio Mamoré, Bolivia. The relationships of the new species with the others of the genus Pseudohemiodon are discussed, and a preliminary key to the nominal species and subspecies is given.
Tipo: Article / Letter to the editor
Ano: 1975
URL: http://www.repository.naturalis.nl/record/505024

Corydoras ornatus, a new species of callichthyid catfish from the Rio Tapajós Drainage, Brazil (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
A new species of the neotropical callichthyid catfish genus Corydoras Lacépède, 1803, C. ornatus, is described and figured. It is compared with Corydoras pulcher Isbrücker &amp; Nijssen, 1973, a closely related species.
Tipo: Article / Letter to the editor
Ano: 1976
URL: http://www.repository.naturalis.nl/record/505452

Two new species and a new genus of neotropical mailed catfishes of the subfamily Loricariinae Swainson, 1838 (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
A new monotypic genus and two new species of South American mailed catfishes of the subfamily Loricariinae are described and figured. A discussion of and comparative notes on related taxa are added. Ricola genus novum is established for the species originally described by Regan (1904) as Loricaria (Loricaria) macrops. A lectotype for Ricola macrops is selected from the two syntypes, originating from Río de la Plata in Argentina/Uruguay. Ricola macrops is compared with species of the genus Loricaria Linnaeus, 1758. Loricaria prolixa species nova is described from Rio Piracicaba, Est. São Paulo, Brazil. It is compared with Loricaria macrodon Kner, 1854, and with Loricaria lata C. H. Eigenmann &amp; R. S. Eigenmann, 1889. Pseudohemiodon apithanos species nova...
Tipo: Article / Letter to the editor
Ano: 1978
URL: http://www.repository.naturalis.nl/record/504901

Rhadinoloricaria gen. nov. and Planiloricaria, two genera of South American Mailed Catfishes (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
This paper deals with two genera of loricariid fishes: Rhadinoloricaria gen. nov., and Planiloricaria Isbrücker, 1971. Rhadinoloricaria is established for the species macromystax, described by Günther (1869: 426) in the binomen Loricaria macromystax. Planiloricaria, elevated to generic rank in the present paper, was described by Isbrücker as a subgenus of the genus Pseudohemiodon Bleeker, 1862, for the new species cryptodon (Isbrücker, 1971: 278). Diagnoses of these two monotypic genera are given, together with redescriptions and figures of their type-species. The relationships with other genera within the subfamily Loricariinae are discussed. A provisional subdivision into six genus-groups is given, and a new subfamily name, Acestridiinae, is proposed for...
Tipo: Article / Letter to the editor
Ano: 1974
URL: http://www.repository.naturalis.nl/record/504983

A review of the genus Corydoras Lacépède, 1803 (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
A review of 99 species and subspecies of the genus Corydoras is given. The primary type-material is recorded together with additional type-specimens deposited in 22 different museum collections. Two neotypes and 22 lectotypes are designated. The species are arranged in five groups: 31 species in the punctatus-group, 11 in the barbatus-group, 25 in the aeneus-group, 8 in the elegans-group, and 19 in the acutusgroup. Measurements and counts of almost all primary typespecimens are tabulated. Ill-known illustrations of type-material are included.
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/504333

A catalogue of the type-specimens of Recent fishes in the Institute of Taxonomic Zoology (Zoölogisch Museum), University of Amsterdam, The Netherlands
Provedor de dados: 16
Autores: Nijssen, H.; Tuijl, L. van; Isbrücker, I.J.H.
This catalogue resulted from our attempts (since 1963) to accommodate and modernize the labelling of type-material of Recent fishes in the collections of the Zoölogisch Museum Amsterdam (ZMA), now named Institute of Taxonomie Zoology, University of Amsterdam. We traced 6625 type-specimens of 714 nominal species or subspecies, 228 of which are primary type-specimens (holotype, lectotype, or neotype); moreover, the collection contains one or more syntypes of 222 nominal (sub-) species. A few syntypes are presently indicated as future lectotype in the collection, awaiting publication by various specialists. Such specimens are not distinguished in this catalogue. It is possible that lectotype designations for some species have been validly published, which...
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/506026

Review of the South American characiform fish genus Chilodus, with description of a new species, C. gracilis (Pisces, Characiformes, Chilodontidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Examination of 291 specimens of Chilodus, a genus of South American fresh water fishes, yielded the presence of three species, viz.: C. punctatus, C. zunevei, and C. gracilis. Of the first species the lectotype is designated. The type material of C. zunevei is lost; new material enabled a redescription of this species. C. gracilis is described as a new species, although it is known as an aquarium fish since decades. The three species are illustrated; a key to them and a map showing their distribution are included.
Tipo: Article / Letter to the editor
Ano: 1988
URL: http://www.repository.naturalis.nl/record/505107

The identity of the South American catfish Loricaria cataphracta Linnaeus, 1758, with redescriptions of the original type specimens of four other nominal Loricaria species (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
This article contains figures and descriptions of Loricaria cataphracta Linnaeus, 1758, sensu stricto (neotype), Loricaria cirrhosa Bloch &amp; Schneider, 1801 [identical with L. cataphracta] (lectotype and paralectotype), Loricaria flagellaris (Gronovius, 1854) (holotype), Loricaria carinata de Castelnau, 1855 (holotype), and Loricaria lata Eigenmann &amp; Eigenmann, 1889, sensu stricto (lectotype and paralectotypes, in part). Another part of the paralectotype series of Loricaria lata represents another species, described but not named below, which eventually may prove not to belong to the genus Loricaria. The ultimate status of L. flagellaris and of L. carinata remains uncertain, there being too few additional data. In addition to L. cirrhosa, L....
Tipo: Article / Letter to the editor
Ano: 1972
URL: http://www.repository.naturalis.nl/record/505243

On Hypopygus lepturus, a little known dwarf gymnotid fish from South America (Pisces, Cypriniformes, Gymnotoidei)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
Hypopygus lepturus Hoedeman, 1062, was hitherto known from the holotype and one paratype only, both imported aquarium specimens. In this paper the type locality of the species is restricted. Additional distributional data from Surinam are given, together with records on the occurrence of H. lepturus in Guyana, Venezuela, Colombia, Brazil, and on the very likely occurrence in Peru. Comparative notes on Steatogenys elegans (Steindachner, 1880) sensu Boulenger, 1898, are added because of the similar appearance of both species. The synonymy of Tateichthys duidae La Monte, 1929, with Steatogenys elegans is established.
Tipo: Article / Letter to the editor
Palavras-chave: 42.81.
Ano: 1972
URL: http://www.repository.naturalis.nl/record/317964

Review of the genus Corydoras from Colombia, with descriptions of two new species (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
This paper contains records and/or descriptions of twelve species of the Callichthyid catfish genus Corydoras Lacepède, 1803, including two new species, from Colombian rivers, Rio Amazonas excluded: Corydoras trilineatus Cope, 1872, C. delphax n. sp., C. leucomelas Eigenmann &amp; Allen, 1942, C. aeneus (Gill, 1858), C. melanotaenia Regan, 1912, C. metae Eigenmann, 1914, C. melini Lönnberg &amp; Rendahl, 1930, C. reynoldsi Myers &amp; Weitzman, 1960, C. axelrodi Rössel, 1962, C. loxozonus n. sp., C. elegans Steindachner, 1877, and C. simulatus Weitzman &amp; Nijssen, 1970. The relationships of the new species with other species of Corydoras are discussed. A key to the species is provided. A Colombian representative of each species is illustrated.
Tipo: Article / Letter to the editor
Ano: 1983
URL: http://www.repository.naturalis.nl/record/505102

Notes on the Guiane species of Corydoras Lacépède, 1803, with descriptions of seven new species and designation of a neotype for Corydoras punctatus (Bloch, 1794) — (Pisces, Cypriniformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
The present paper deals with the species Corydoras punctatus (Bloch, I794), for which a neotype is designated; C. melanistius Regan, 1912, C. spilurus Norman, 1926, and C. griseus deweyeri Meinken, 1957, for which lectotypes are designated; С. aeneus (Gill, 1858), C. potaroensis Myers, 1927, C. bondi Gosline, 1940, С. osteocarus Böhlke, 1951, C. bicolor nov. spec., C. boesemani nov. spec., C. dubius nov. spec., C. oxyrhynchus nov. spec., C. nanus nov. spec., C. sanchesi nov. spec., and C. wotroi nov. spec.
Tipo: Article / Letter to the editor
Palavras-chave: 42.81.
Ano: 1967
URL: http://www.repository.naturalis.nl/record/319319

The South American catfish genus Brochis Cope, 1872 (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
Examination of the type specimens of Callichthys splendens Castelnau, 1855, Brochis coeruleus Cope, 1872 (type species of Brochis Cope, 1872), Brochis dipterus Cope, 1872, Corydoras semiscutatus Cope, 1872, Chaenothorax bicarinatus Cope, 1878 (type species of Chaenothorax Cope, 1878), and Chaenothorax eigenmanni Ellis, 1913, has demonstrated that they represent only one species: Brochis splendens. Callichthys taiosh Castelnau, 1855, also has to be considered a synonym of Brochis splendens. Chaenothorax multiradiatus Orcés-Villagomez, 1960, is a second species belonging to the genus Brochis.
Tipo: Article / Letter to the editor
Ano: 1970
URL: http://www.repository.naturalis.nl/record/504732

Lasiancistrus scolymus, a new species of mailed catfish from Rio Aripuanã, Est. Mato Grosso do Sul, Brazil (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
Lasiancistrus scolymus n. sp. is described and illustrated, based upon the holotype from Rio Aripuanã, Rio Madeira system, Est. Mato Grosso do Sul, Brazil. It is compared with Lasiancistrus heteracanthus (Günther, 1869), type-species of the genus Lasiancistrus Regan, 1904.
Tipo: Article / Letter to the editor
Ano: 1985
URL: http://www.repository.naturalis.nl/record/504465

Aspidoras virgulatus n. sp., a plated catfish from Espírito Santo, Brazil (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
Aspidoras virgulatus, a new species of Neotropical callichthyid catfish, is described and illustrated. It originates from tributaries of Rio Doce, State of Espírito Santo, Brazil.
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/505516

Chronological enumeration of nominal species and subspecies of Corydoras (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
A complete list of species and subspecies accepted as members of the genus Corydoras Lacépède, 1803, is given. They are arranged in chronological order. Invalid specific names are followed by their senior synonym. Nomina nuda are listed separately. A bibliography covering all publications containing original descriptions or proposals of new names is included.
Tipo: Article / Letter to the editor
Ano: 1979
URL: http://www.repository.naturalis.nl/record/505370

The mailed catfish genus Lasiancistrus Regan, 1904, from French Guiana and Surinam, with descriptions of two new species (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Heitmans, W.R.B.; Nijssen, H.; Isbrücker, I.J.H.
Examination of recently collected material of the mailed catfish genus Lasiancistrus Regan, 1904, from French Guiana and Surinam revealed L. niger (Norman, 1926), and two new species: L. brevispinis and L. longispinis. The three species are described and figured. Lasiancistrus is compared with 13 other genera, forming the tribe Ancistrini of the subfamily Ancistrinae.
Tipo: Article / Letter to the editor
Ano: 1983
URL: http://www.repository.naturalis.nl/record/504046

Redescription and figures of the South American Mailed Catfish Rineloricaria lanceolata (Günther, 1868) (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
Rineloricaria lanceolata was originally described from a single specimen of unknown sex, with a faded colour pattern. The present paper contains a redescription with figures of the species, based on the holotype from Peru, and on additional specimens from Ecuador, Bolivia, Guyana, and Brazil, including males with fully developed “bristles”, a secondary sexual character.
Tipo: Article / Letter to the editor
Ano: 1973
URL: http://www.repository.naturalis.nl/record/504853

New records of the mailed catfish Planiloricaria cryptodon from the upper Amazon in Peru, Brazil and Bolivia, with a key to the genera of the Planiloricariina
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
The mailed catfish Planiloricaria cryptodon (Isbrücker, 1971) was hitherto only known from the holotype from Río Ucayali, Peru. New material from Rio Purus (Est. Acre, Brazil) and from Río Mamoré (Prov. Beni, Bolivia) is described and compared with the holotype. One of the new specimens is illustrated. A key to the genera of the subtribe Planiloricariina (tribe Loricariini of the subfamily Loricariinae) is added.
Tipo: Article / Letter to the editor
Ano: 1986
URL: http://www.repository.naturalis.nl/record/504674

The neotropical mailed catfishes of the genera Lamontichthys P. de Miranda Ribeiro, 1939 and Pterosturiosma n. gen., including the description of Lamontichthys stibaros n. sp. from Ecuador (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Descriptions and illustrations are given of four species of mailed catfishes belonging to the subfamily Loricariinae, tribe Harttiini. Two species are assigned to Lamontichthys P. de Miranda Ribeiro, 1939: Lamontichthys filamentosus (La Monte, 1935) (type-species, of which Harttia filamentissima C. H. Eigenmann &amp; Allen, 1942, is provisionally considered a junior synonym), based on a total of thirteen specimens, including all type-specimens, from Brazil, Bolivia, Peru, and Ecuador (all from tributaries of the Rio Amazonas system), and Lamontichthys stibaros n. sp., based on two specimens from Ecuador, sympatric with the former species. Harttia microps C. H. Eigenmann &amp; Allen, 1942, is redescribed from three out of the five type-specimens,...
Tipo: Article / Letter to the editor
Ano: 1978
URL: http://www.repository.naturalis.nl/record/504145

Hypostomus nematopterus, a new species of mailed catfish from the Oyapock River system, French Guiana (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Hypostomus nematopterus n.sp. is described (and illustrated) from the Oyapock river system, French Guiana. The relationship of this species with Hypostomus gymnorhynchus (Norman, 1926) is discussed.
Tipo: Article / Letter to the editor
Ano: 1984
URL: http://www.repository.naturalis.nl/record/505556

Three new South American mailed catfishes of the genera Rineloricaria and Loricariichthys (Pisces, Siluriformes, Loricariide)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Three new species belonging to two different genera of South American mailed catfishes of the subfamily Loricariinae are described and figured. A discussion of and comparative notes on related species are added. Rineloricaria formosa n. sp. is described from the Río Inírida/Río Orinoco drainage in Colombia, from the Río Atabapo (Río Orinoco drainage) in Venezuela, and from the Rio Tiquié and Rio Uaupés (Rio Amazonas drainage) in Brazil. It is compared with Rineloricaria morrowi Fowler, 1940, with Rineloricaria melini (Schindler, 1959), and with Rineloricaria fallax (Steindachner, 1915). The lectotype of the latter species is herein designated, and a discussion on the misidentification of R. fallax with Loricariichthys brunneus (Hancock, 1828) is added....
Tipo: Article / Letter to the editor
Ano: 1979
URL: http://www.repository.naturalis.nl/record/504224

On Hemiodontichthys acipenserinus and Reganella depressa, two remarkable Mailed Catfishes from South America (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Hemiodontichthys acipenserinus (Kner, 1854) is redescribed and figured after examination of 132 specimens from the Rio Amazonas, Essequibo River, and Rio Paraguai systems, including five syntypes, from which the lectotype is selected. Reganella depressa (Kner, 1854) is redescribed and figured after examination of 7 specimens from the Rio Amazonas system, including two syntypes, from which the lectotype is selected. Relationships of the monotypic genera Hemiodontichthys Bleeker, 1862, and Reganella Eigenmann, 1905 with other genera are briefly discussed.
Tipo: Article / Letter to the editor
Ano: 1974
URL: http://www.repository.naturalis.nl/record/505200

Two new species of the catfish genus Corydoras from Brazil and Peru (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
This paper contains descriptions and figures of two new species of Corydoras, C. maculifer from Brazil and C. panda from Peru. The relationships of the new species with other species of Corydoras are discussed.
Tipo: Article / Letter to the editor
Ano: 1971
URL: http://www.repository.naturalis.nl/record/504807

New data on Metaloricaria paucidens from French Guiana and Surinam (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
A large number of previously unrecorded specimens of mailed catfishes of the genus Metaloricaria Isbrücker, 1975 (Loricariinae, tribe Harttiini, subtribe Metaloricariina) is compared with the known specimens from French Guiana and Surinam. This results in the recognition of two subspecies, viz., M. paucidens paucidens Isbrücker, 1975, from the rivers Oyapock and Maroni (French Guiana, Surinam), and M. p. nijsseni (Boeseman, 1976) from the rivers Suriname, Saramacca, Nickerie and Corantijn (Surinam). These subspecies were originally described as two different species, even within two different genera: Metaloricaria paucidens Isbrücker, 1975, and Harttia nijsseni Boeseman, 1976. Morphometric and meristic data, together with illustrations are given of the two...
Tipo: Article / Letter to the editor
Ano: 1982
URL: http://www.repository.naturalis.nl/record/504255

Description of Poecilia (Acanthophacelus) wingei n. sp. from the Paría Peninsula, Venezuela, including notes on Acanthophacelus Eigenmann, 1907 and other subgenera of Poecilia Bloch and Schneider, 1801 (Teleostei, Cyprinodontiformes, Poeciliidae)
Provedor de dados: 16
Autores: Poeser, F.N.; Kempkes, M.; Isbrücker, I.J.H.
The taxonomy of the common guppy, Poecilia reticulata Peters, 1859, is reviewed and the closely related Campoma guppy, P. wingei n. sp., is described. Formerly, the common guppy was not judged to be closely related to any other species of Poecilia, but the new species is the second species to be allocated in the subgenus Acanthophacelus Eigenmann, 1907. The recognition of P. wingei results from observed character displacement, i.e., on the interaction between two closely related species in a shared environment. In addition to differences in coloration, behaviour also indicates specific differences. The area in which P. wingei occurs, the Campoma region at the base of the Paría Peninsula in Venezuela, hints to an origin of the subgenus Acanthophacelus prior...
Tipo: Article / Letter to the editor
Palavras-chave: Guppies; Poecilia reticulata; P. wingei; Melanophore patterns; Character displacement; Paría Peninsula; Despeciation; 42.81.
Ano: 2005
URL: http://www.repository.naturalis.nl/record/214343

Classification and catalogue of the mailed Loricariidae (Pisces, Siluriformes)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
This publication presents a catalogue of the taxa of the neotropical family Loricariidae, the mailed catfishes, including about 600 described species and 70 genera. An attempt is made to assign each species to its proper genus and to arrange the genera into an approximate phylogenetic order. Numerous new combina tions have become necessary. A new tribe, consisting of two new subtribes, and three new genera are herein established. Notes on type-material, recorded in the literature subsequent to an original description, are added. Literature references aim to include all publications containing original descriptions and proposals of new names.
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/506366

Brochis britskii, a new species of plated catfish from the upper Rio Paraguai System, Brazil (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
Brochis britskii n.sp. is described and illustrated, and compared with B. multiradiatus (Orcés- Villagomez, 1960). The type material originates from the upper Rio Paraguai system, Est. Mato Grosso, Brazil. A key to the species of Brochis Cope, 1871, is provided.
Tipo: Article / Letter to the editor
Ano: 1983
URL: http://www.repository.naturalis.nl/record/505444

The South American Mailed Catfishes of the genus Pseudoloricaria Bleeker, 1862 (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Two species of South American Mailed Catfishes of the genus Pseudoloricaria Bleeker, 1862 are redescribed and figured from type-specimens and additional material: Pseudoloricaria laeviuscula (Valenciennes, 1840), and Pseudoloricaria punctata (Regan, 1904). Since the provenance of the holotype of P. laeviuscula is unknown, the type-locality of this species is restricted to the mouth of the Rio Tapajós at Santarém. The lectotype is selected from the three syntypes of P. punctata, and its type-locality is restricted to the Rio Amazonas at Manaus. P. laeviuscula is distributed only in the Rio Amazonas basin in Brazil, whereas P. punctata occurs in several river systems, viz. the Rio Amazonas basin in Brazil, Peru, and Ecuador, in the Rio Parnaiba, Est. Piaui,...
Tipo: Article / Letter to the editor
Ano: 1976
URL: http://www.repository.naturalis.nl/record/504963

Pyxiloricaria menezesi, a new genus and species of mailed catfish from Rio Miranda and Rio Cuiabá, Brazil (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.; Nijssen, H.
Pyxiloricaria menezesi n. gen., n. sp., is described and illustrated from Rio Miranda (Est. Mato Grosso do Sul) and from Rio Cuiabá (Est. Mato Grosso), Brazil. It is assigned to the subtribe Planiloricariina of the tribe Loricariini, subfamily Loricariinae. A comparison is made with sympatric Pseudohemiodon cf. laticeps (Regan, 1904).
Tipo: Article / Letter to the editor
Ano: 1984
URL: http://www.repository.naturalis.nl/record/504358

On the identity of Corydoras nattereri Steindachner, 1877 with the description of a new species, Corydoras prionotos (Pisces, Siluriformes, Callichthyidae)
Provedor de dados: 16
Autores: Nijssen, H.; Isbrücker, I.J.H.
A redescription and figures of Corydoras nattereri Steindachner, 1877, are given together with a description and figures of a new species, Corydoras prionotos, sympatric with Corydoras nattereri, with comparable dimensions and a similar colour pattern. A total of 1066 specimens were examined, including primary type-material of Corydoras juquiaae Von Ihering, 1907, and of Corydoras nattereri triseriatus Von Ihering, 1911, which are both placed in synonymy of C. nattereri, the holotype of which is lost. A neotype for Corydoras nattereri is designated. Corydoras prionotos differs from C. nattereri mainly in having the medial border of the pectoral-fin spine strongly serrate.
Tipo: Article / Letter to the editor
Ano: 1980
URL: http://www.repository.naturalis.nl/record/505183

Revision of Loricaria Linnaeus, 1758 (Pisces, Siluriformes, Loricariidae)
Provedor de dados: 16
Autores: Isbrücker, I.J.H.
The South American genus of mailed catfishes Loricaria Linnaeus, 1758 is reviewed. Almost all primary type-material and additional specimens are examined. Descriptions, tabulated morphometric and meristic data, and illustrations are presented of eleven species: Loricaria cataphracta Linnaeus, 1758 (syn.: Plecostomus flagellaris Gronovius, ed. Gray, 1854, and Loricaria carinata de Castelnau, 1855), L. lata Eigenmann &amp; Eigenmann, 1889, L. simillima Regan, 1904, L. parnahybae Steindachner, 1907 (syn.: L. piauhiae Fowler 1941), L. piracicabae Von Ihering, 1907, L. clavipinna Fowler, 1940, L. nickeriensis Isbrücker, 1979, L. tucumanensis Isbrücker, 1979, L. apeltogaster Boulenger, 1895, L. prolixa Isbrücker &amp; Nijssen, 1978, and L. lentiginosa Isbrücker,...
Tipo: Article / Letter to the editor
Ano: 1981
URL: http://www.repository.naturalis.nl/record/504947