Taxonomy of the South American genus Pachypops Gill 1861 (Teleostei: Perciformes: Sciaenidae), with the description of a new species

Zootaxa ◽  
2002 ◽  
Vol 26 (1) ◽  
pp. 1 ◽  
Author(s):  
LILIAN CASATTI
Keyword(s):  
New Species ◽  
River Basins ◽  
Junior Synonym ◽  
Valid Species ◽  
Nominal Species ◽  
South American ◽  
The South ◽  
Haemal Spine ◽  
A New Species ◽  
Fin Spines

Pachypops is a South American freshwater sciaenid genus characterized by having two anal-fin spines, three mental barbels, an inferior mouth, a swimbladder with a pair of short appendages anteriorly and a pair of longer appendages projected posteriorly, and the haemal spine of the first caudal distinctly expanded. Three valid Pachypops species are recognized herein. Of the six nominal species previously assigned to Pachypops, two are herein recognized as valid (Perca fourcroi and Micropogon trifilis), two are assigned to other sciaenid genera (Pachypops adspersus and Pachypops cevegei) and two are considered junior synonyms (Corvina biloba and Pachypops camposi). A seventh nominal species, Pachyurus nattereri, formerly considered a valid species of Pachyurus, is determined to be a junior synonym of Pachypops fourcroi, and lectotype and paralectotypes are designated for it. Pachypops fourcroi occurs in the Orinoco, Amazonas, Essequibo, Corantijn, and Approuague River basins, and Pachypops trifilis in rivers of Guyana and middle and lower reaches of the Rio Amazonas basin. A third valid species, Pachypops pigmaeus n. sp., is herein described from tributaries of the Rio Amazonas, Brazil.

scholarly journals A new species of Eucyclops Claus (Copepoda: Cyclopoida) from Southeast Mexico with a key for the identification of the species recorded in Mexico

Zootaxa ◽  
2004 ◽  
Vol 617 (1) ◽  
pp. 1 ◽  
Author(s):  
E. SUÁREZ-MORALES
Keyword(s):  
New Species ◽  
Relative Length ◽  
Nominal Species ◽  
South American ◽  
The South ◽  
Southeastern Pacific ◽  
Outer Seta ◽  
Caudal Rami ◽  
A New Species ◽  
Copepoda Cyclopoida

Eucyclops torresphilipi sp. nov. is described from samples collected in the state of Chiapas, on the southeastern Pacific coast of Mexico. It belongs to a group of species similar to the presumably cosmopolitan E. agilis (Koch, 1838). The new species is closest to the South American E. delachauxi (Kiefer, 1925); it can be distinguished from its congeners by a combination of characters that include a fifth leg with a particularly slender inner spiniform seta that is as long as the outer seta, the caudal rami has spinules covering up to of the outer margin, caudal rami over 4 times longer than wide, the relative length of the dorsal seta, and the proportion of the terminal spines of the third exopodal segment of the fourth legs. Only nine other nominal species of Eucyclops have been recorded in Mexico; nearly half of them are known also from South America. The new species seems to have a restricted distributional range; however, it could be present also in Guatemala. Its morphological affinity with South American forms confirms the influence of the South American cyclopoid fauna in Mexico. A key for the identification of the species of Eucyclops recorded in Mexico is included.

A new species of Dichelyne (Nematoda, Cucullanidae) parasitizing sciaenid fishes from off the South American Atlantic coast

2009 ◽  
Vol 54 (1) ◽  
Author(s):  
Juan Timi ◽  
Ana Lanfranchi ◽  
Luiz Tavares ◽  
José Luque
Keyword(s):  
New Species ◽  
Atlantic Coast ◽  
Length Distribution ◽  
Distribution Patterns ◽  
Nematode Species ◽  
Valid Species ◽  
South American ◽  
Type Specimens ◽  
Pacific Waters ◽  
A New Species

AbstractA new nematode species Dichelyne (Cucullanellus) sciaenidicola sp. nov. is described based on specimens collected from the Whitemouth croaker Micropogonias furnieri (Desmarest) and the Argentine croaker Umbrina canosai Berg, from coastal waters of Argentina and Brazil. These nematodes were firstly identified as D. (C.) elongatus (Törnquist, 1931), a commonly reported species from M. furnieri in South American Atlantic waters. However, other species of Dichelyne have so far been reported from this host in the same area, namely D. (C.) rodriguesi (Pinto, Fábio et Noronha, 1970), D. (C.) amaruincai (Freitas, Vicente et Ibañez, 1969) and D. (Dichelyne) micropogonii Pereira et Costa, 1996. A careful re-examination of these parasites, as well as of type specimens of all species reported from M. furnieri, revealed that these nematodes represented a new species. The new species is distinguished from most of its congeners by having papillae 5–7 and 9 forming a subventral line close to cloaca, this feature is shared with other 6 species [D. (C.) dichelyneformis (Szidat, 1950), D. (C.) fraseri (Baylis, 1929), D. (C.) abbreviatus (Rudolphi, 1819), D. (C.) adriaticus (Törnquist, 1931), D. (C.) minutus (Rudolphi, 1819) and D. (C.) mariajuliae Alarcos, Timi, Etchegoin et Sardella, 2006)], which are readily distinguished by their body size, spicules length, distribution patterns of other papillae and position of the excretory pore and deirids. Also, D. (C.) elongatus from Umbrina canariensis (Valenciennes) from West Africa is established as a new species Dichelyne (Cucullanellus) yvonnecampanae sp. nov.; D. (C.) amaruincai from Pacific waters is considered as a valid species, D. (D.) micropogonii is regarded as species inquirendae and D. (C.) rodriguesi is identified as Cucullanus sp.

scholarly journals Priogymnanthus colombianus (Oleaceae), a new species and first record of genus to Colombia

Phytotaxa ◽  
2019 ◽  
Vol 399 (3) ◽  
pp. 195
Author(s):  
JOSÉ LUIS FERNÁNDEZ-ALONSO ◽  
PAULA ANDREA MORALES MORALES
Keyword(s):  
New Species ◽  
First Record ◽  
Dry Forest ◽  
South American ◽  
The South ◽  
A New Species ◽  
Iucn Criteria

Priogymnanthus colombianus, a new species and the first record of the South American genus of Oleaceae for Colombia is described and illustrated also we present a dichotomic key for the known species of genus. The new species differs from the three knowns for Priogymnanthus by: leaves oblong or oblong-elliptic, completely glabrous, petioles 10–17 (19) mm; inflorescences 15–20 (25) mm in length, with glabrous rachis, anthers about 3 mm length; fruits (10) 12–15 mm in diameter. P. colombianus occurs on premontane and dry forest in Colombia between 719 and 1213 m of elevation. Based on general threats to its ecosystems and few records found, we categorize the species as EN (endangered) following IUCN criteria.

The bee genus Ruizantheda (Hymenoptera: Halictidae), its scope and description of a new species

Zootaxa ◽  
2009 ◽  
Vol 2282 (1) ◽  
pp. 62-68
Author(s):  
ROCIO ANA GONZALEZ-VAQUERO ◽  
ARTURO ROIG-ALSINA
Keyword(s):  
New Species ◽  
South American ◽  
Santa Fe ◽  
The South ◽  
Diagnostic Characteristics ◽  
A New Species

The South American caenohalictine genus Ruizantheda is understood to comprise Halictus proximus Spinola, Halictus divaricatus Vachal, and the new species Ruizantheda centralis from Argentina. The new species is intermediate between the first two, bridging the gap in morphology observed in these rather different species. Diagnostic characteristics for the genus are indicated; a key and a comparative table of characters for the three species are given. The new species, which occurs in the provinces of Santa Fe, Santiago del Estero and Chaco, in Argentina, is described and illustrated.

A new species of Rheotanytarsus Thienemann & Bause (Diptera: Chironomidae) from Peruvian Andes, with updated key to South American species

Zootaxa ◽  
2020 ◽  
Vol 4722 (2) ◽  
pp. 195-200
Author(s):  
GALILEU P. S. DANTAS ◽  
ANA A. HUAMANTINCO ARAUJO ◽  
NEUSA HAMADA
Keyword(s):  
New Species ◽  
South America ◽  
Neotropical Region ◽  
Nominal Species ◽  
South American ◽  
Congeneric Species ◽  
Distribution Map ◽  
South American Species ◽  
Peruvian Andes ◽  
A New Species

Rheotanytarsus is a speciose genus, currently composed by more than 100 nominal species distributed worldwide, 19 are known from the Neotropical region, four from South America and only one is registered for Peru. In the present study, a new species is described and illustrated based on males collected in the Peruvian Andes. In addition, the key to the South American species is updated and a distribution map of them is provided. Rheotanytarsus amaru sp. n. is easily distinguished from the congeneric species by the dark general coloration and the hypopygial morphology. 

A New Species of the South American Genus Nassauvia (Compositae: Mutisieae) from Chilean Patagonia

Brittonia ◽  
1988 ◽  
Vol 40 (3) ◽  
pp. 332 ◽  
Author(s):  
Mary T. Kalin Arroyo ◽  
Clodomiro Marticorena
Keyword(s):  
New Species ◽  
South American ◽  
The South ◽  
Chilean Patagonia ◽  
A New Species

A new species of Osteocephalus from Ecuador and a redescription of O. leprieurii (Duméril & Bibron, 1841) (Anura: Hylidae)

2002 ◽  
Vol 23 (1) ◽  
pp. 21-46 ◽  
Author(s):  
Walter Hödl ◽  
Karl-Heinz Jungfer
Keyword(s):  
New Species ◽  
Sexual Activity ◽  
Amazon Basin ◽  
French Guiana ◽  
Colour Change ◽  
South American ◽  
The South ◽  
A New Species

AbstractThe South American spiny-backed treefrog, Osteocephalus leprieurii, as previously understood, is a composite of several species. We redescribe it morphologically on the basis of specimens from French Guiana and add other data on the biology of the species. We describe O. mutabor n. sp., previously confused with O. leprieurii, from the Amazon Basin of Ecuador. The two species differ in coloration, vocalizations and ontogenetic colour change. Osteocephalus leprieurii is remarkable for bearing nuptial excrescences not only on the thumb, but also under the fingers and on the chin. The vocal sac is semicircular expanding posterolaterally. Osteocephalus mutabor n. sp. is characterized by numerous dark transversal bars on the dorsum and a semicircular vocal sac. The amount of keratinized tips on the dorsal granules in males of both species is dependent on sexual activity. Bajo el nombre de la rana arborícola de espalda espinosa Osteocephalus leprieurii, de Sur America, como se ha entendido anteriormente, se confundieron diferentes especies. Se describe de nuevo la especie morfológicamente en base a especimenes de la Guayana Francesa y se añaden otros datos sobre su biología. Describimos O. mutabor n. sp. de la Cuenca Amazónica Ecuatoriana. Ambas especies se diferencian en coloración, vocalizaciones y cambio ontogenético de color. Osteocephalus leprieurii se caracteriza por poseer excrecencias nupciales no solo en el pulgar, sino también bajo los dedos y la barbilla. El saco vocal es semicircular con expansión posterolateral. Osteocephalus mutabor n. sp. se caracteriza por tener rayas oscuras transversales en el dorso y un saco vocal semicircular. La cantidad de puntas queratinizadas en los gránulos dorsales de los machos de ambas especies depende de la actividad sexual.

A new species of Arthrobrachus Solier, Arthrobrachus arquatus n. sp. (Coleoptera: Melyridae) from the South American Transition Zone, Argentina

Zootaxa ◽  
2018 ◽  
Vol 4441 (3) ◽  
pp. 537
Author(s):  
PATRICIA M. ESTRADA
Keyword(s):  
New Species ◽  
Transition Zone ◽  
Adult Male ◽  
South American ◽  
The South ◽  
Central Chile ◽  
Male And Female ◽  
A New Species

A new species of Arthrobrachus Solier, A. arquatus n. sp. from Argentina, is described using external characters of the adult male and female including terminal segments of the abdomen and genitalia. Arthrobrachus arquatus n. sp. is morphologically close to A. tibialis Solier, 1849 from the Central Chile sub region, suggesting a phylogenetic connection. Comments on the possible origin of this relationship are made. 

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