Two new species of Cyphocharax (Teleostei: Characiformes: Curimatidae) from headwaters of the Jequitinhonha and São Francisco river basins, Minas Gerais, Brazil

AbstractGamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of “San Francisco piranha”, Pygocentrus piraya (Cuvier, 1819) and.White piranha. Serrasalmus brandtii (Lütken, 1875) is described. The new species is similar to the type species of the genus, Gamidactylus jaraquensis Thatcher et Boeger, 1984, but differs from it in the following respects: the cephalothorax is shorter, the free thoracic segments are usually longer, leg 5 is reduced to a simple seta and a spine on the second antennal segment is lacking. Gamidactylus bryconis Varella, 1995 and Gamidactylus hoplius Varella et Malta, 1996, do not closely resemble the new species because they are much larger and both present leg 5 reduced to a double seta.

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Brasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) from the gills and nasal fossae of serrasalmid fishes from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais State, Brazil

Acta Parasitologica ◽

10.2478/s11686-007-0036-x ◽

2007 ◽

Vol 52 (3) ◽

Cited By ~ 1

Author(s):

Michelle Santos ◽

Vernon Thatcher ◽

Marilia Brasil-Sato

Keyword(s):

New Species ◽

Distal Segment ◽

Minas Gerais ◽

Terminal Segment ◽

Sao Francisco River ◽

Genital Complex ◽

São Francisco River ◽

Minas Gerais State ◽

Três Marias Reservoir

AbstractBrasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) is described. Specimens of the new species were collected from the gills and nasal fossae of the serrasalmid fishes, known as “piranhas”, Pygocentrus piraya (Cuvier, 1819) and “pirambebas”, Serrasalmus brandtii (Lütken, 1875). The fishes were netted in the Três Marias Reservoir (18°12′59″S, 45°17′34″W) of the upper São Francisco River, Minas Gerais State, Brazil. The new species differs from its congeners by the following characters: the specific setation on the antennule; the terminal barb of the antenna; the deeply bifurcate distal segment of the mandible; the chalice-shaped genital complex; a conspicuous external indentation of the second segment of the first endopod and a very short terminal segment of the first exopod.

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Certain species of Plecoptera from the headwater springs of National Integration River (São Francisco), Brazil

Zootaxa ◽

10.11646/zootaxa.4429.1.13 ◽

2018 ◽

Vol 4429 (1) ◽

pp. 195

Author(s):

MARCOS CARNEIRO NOVAES ◽

DIOGO SILVA VILELA ◽

VINICIUS MARQUES LOPEZ ◽

RHAINER GUILLERMO NASCIMENTO FERREIRA

Keyword(s):

New Species ◽

National Park ◽

Minas Gerais ◽

Southeastern Brazil ◽

National Integration ◽

Sao Francisco River ◽

São Francisco River ◽

Minas Gerais State ◽

A New Species

Specimens of Anacroneuria Klapálek 1909 (Plecoptera: Perlidae) and Tupiperla Froehlich 1969 (Plecoptera: Gripopterygidae) from the headwater springs of the National Integration River (São Francisco River), Serra da Canastra National Park, in Minas Gerais State, of southeastern Brazil, were studied. A new species, Anacroneuria saofrancisco n. sp. is described and the descriptions of the nymph and the female of A. saofrancisco are also presented.

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Ergasilus chelangulatus sp. nov. (Copepoda: Ergasilidae) a branchial parasite of the freshwater catfish, Pimelodus maculatus from the upper São Francisco River, Brazil

Revista Brasileira de Zoologia ◽

10.1590/s0101-81752008000300018 ◽

2008 ◽

Vol 25 (3) ◽

pp. 512-514 ◽

Cited By ~ 3

Author(s):

Vernon E. Thatcher ◽

Marilia C. Brasil-Sato

Keyword(s):

New Species ◽

Freshwater Fish ◽

Antennal Segment ◽

Minas Gerais ◽

The Body ◽

Freshwater Catfish ◽

Sao Francisco River ◽

São Francisco River ◽

Minas Gerais State ◽

Pimelodus Maculatus

Ergasilus chelangulatus sp. nov. is described from the freshwater fish, Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) of the upper São Francisco River, Minas Gerais State, Brazil. The new species is based on female specimens and the male is unknown. This species has a serrate seta on exopod one and a two-segmented first endopod, as do most Amazonian species of this genus. The body is elongate and produced anteriorly. The antennae are elongate and have prominent sensilla on segments two and three. Ergasilus chelangulatus sp. nov. can be distinguished from all known species of Ergasilus by the fourth antennal segment (claw) which is bent at nearly a right angle.

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Taxonomic revision of the genus Panca Evans, 1955 (Hesperiidae: Hesperiinae: Hesperiini: Moncina) with the description of two new species

Zootaxa ◽

10.11646/zootaxa.4830.3.3 ◽

2020 ◽

Vol 4830 (3) ◽

pp. 503-543

Author(s):

ADALBERTO DANTAS DE MEDEIROS ◽

DIEGO RODRIGO DOLIBAINA ◽

EDUARDO CARNEIRO ◽

OLAF HERMANN HENDRIK MIELKE ◽

MIRNA MARTINS CASAGRANDE

Keyword(s):

New Species ◽

Taxonomic Revision ◽

Minas Gerais ◽

South American ◽

Mato Grosso ◽

Distribution Maps ◽

Natural Grasslands ◽

Two New Species ◽

Distrito Federal ◽

Respective Species

The South American genus Panca Evans, 1955 and its respective species are revised. Previous to this study, the genus included solely its type species, Lerodea subpunctuli Hayward, 1934, until Panca moseri Dolibaina, Carneiro & O. Mielke, 2017 was described recently. However, as a result of a broader morphological study including closely related genera, we here propose that Panca assembles 12 species, most of which inhabit open environments such as the Cerrado biome and the natural grasslands of the Atlantic Forest biome. Eight species formerly included among other genera of Moncina are here combined with Panca: Panca satyr (Evans, 1955) comb. nov., Panca tobiasi (Mielke, 1992) comb. nov., Panca trogon (Evans, 1955) comb. nov., Panca steinhauseri (Dolibaina & A. Warren, 2015) comb. nov., Panca acroleuca (Plötz, 1884) comb. nov., and Panca mirnae (O. Mielke, Dolibaina, Carneiro & A. Warren, 2015) comb. nov. (all formerly in Artines Godman, 1901), Panca paulo (Bell, 1932) comb. nov. (formerly in Eutocus Godman, 1901), and Panca mictra (Evans, 1955) comb. nov. (formerly in Vidius Evans, 1955). Additionally, two new species are described from Brazil: Panca puri Medeiros, O. Mielke & Casagrande sp. nov. (from Pará, Pernambuco, Minas Gerais, Rio de Janeiro and Paraná) and Panca xavante Medeiros, O. Mielke & Dolibaina sp. nov. (from Mato Grosso, Goiás, Distrito Federal and Minas Gerais). A neotype for Apaustus acroleuca Plötz, 1884 is designated. Illustrations of the male and female genitalia and distribution maps are presented for all the species of Panca and an identification key is provided for both sexes.

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Community structure of aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) in Cerrado streams of Paraguay, Paraná, and São Francisco river basins

Biota Neotropica ◽

10.1590/s1676-06032013000100011 ◽

2013 ◽

Vol 13 (1) ◽

pp. 97-107 ◽

Cited By ~ 5

Author(s):

Renato de Mei Romero ◽

Mônica Ceneviva-Bastos ◽

Gustavo Henrique Baviera ◽

Lilian Casatti

Keyword(s):

Community Structure ◽

Aquatic Insects ◽

Regional Differences ◽

River Basins ◽

Taxonomic Composition ◽

Taxonomic Resolution ◽

Sao Francisco River ◽

Original Distribution ◽

São Francisco River

We evaluated qualitatively and quantitatively the community structure of aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) in 19 streams in areas of Cerrado in the Paraguay, Paraná, and São Francisco river basins. The number of genera and taxonomic composition were compared at spatial (at the hydrographic basins level) and conservation levels (more preserved and less preserved areas). The influence of spatial and environmental factors in richness and abundance was also evaluated. The geographical distribution of Grumicha, Coryphorus, and Austrotinodes was expanded. The highest Trichoptera richness was found in the São Francisco river basin (F = 5,602, p = 0,004) and a higher number of Ephemeroptera genera occurred in the relatively less preserved sites (F = 6,835, p = 0,009). The pattern of genera distribution was different among basins (R = 0,0336, p = 0,001), but it was similar among relatively less and more preserved areas (R = -0,039, p = 0,737). These findings can be explained by the low impact level in these streams and also by the taxonomic resolution used in this study. Latitude and instream diversity were the most important factors to explain the variation in genera richness and abundance (p = 0.004 and p = 0.026, respectively). Hence, the regional differences can be attributed to spatial influences, quantity or quality of habitats and the original distribution of taxa within each basin.

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Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae) from the central Brazilian Cerrado

Zootaxa ◽

10.11646/zootaxa.4526.2.4 ◽

2018 ◽

Vol 4526 (2) ◽

pp. 175

Author(s):

RAFAEL SOBRAL ◽

PASCHOAL C. GROSSI ◽

JOSÉ W. DE MORAIS

Keyword(s):

New Species ◽

Minas Gerais ◽

Brazilian Cerrado ◽

Distribution Map ◽

Mato Grosso ◽

Male And Female ◽

Two New Species

Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae: Agaocephalini), Aegopsis diceratops Sobral & Grossi new species and Aegopsis vazdemelloi Sobral & Grossi new species, are described and illustrated based on specimens collected in Cerrado habitat in the Brazilian states of Minas Gerais and Mato Grosso. The new species are similar to A. bolboceridus (Thomson, 1860). A redescription of A. bolboceridus is provided along with remarks comparing characters among these three species. A distribution map and a male and female key to the species in the genus are provided.

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Digenea of Hoplias intermedius and Hoplias malabaricus (Actinopterygii, Erythrinidae) from upper São Francisco River, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612015038 ◽

2015 ◽

Vol 24 (2) ◽

pp. 129-135 ◽

Cited By ~ 7

Author(s):

Danielle Priscilla Correia Costa ◽

Cassandra Moraes Monteiro ◽

Marilia Carvalho Brasil-Sato

Keyword(s):

River Basin ◽

Feeding Habits ◽

Minas Gerais ◽

New Host ◽

Hoplias Malabaricus ◽

Parasitic Fauna ◽

Sao Francisco River ◽

São Francisco River ◽

New Location

A total of 103 specimens of Hoplias intermedius (Günther, 1864) and 86 specimens of H. malabaricus (Bloch, 1794) from the upper São Francisco River, State of Minas Gerais were collected between April 2011 and August 2013, and their parasitic fauna were investigated. Four species of Digenea were found: metacercariae of Austrodiplostomum sp., and Ithyoclinostomum sp.; and adult specimens of Phyllodistomum spatula Odhner, 1902, and Pseudosellacotyla lutzi (Freitas, 1941) Yamaguti, 1954. The prevalence of the metacercariae was higher than that of the adult digeneans of erythrinids from the upper São Francisco River as a result of piscivorous feeding habits of these adult erythrinids. The presence of metacercariae and adult digeneans indicate that they act as intermediate and definitive hosts, respectively, in their biological cycles. Hoplias intermedius is a new host for the four species of Digenea, and the São Francisco River basin is a new location for the known geographical distributions of P. spatula and P. lutzi.

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