The South American Biogeographic Transition Zone: An analysis from Asteraceae

Taxon ◽  
2010 ◽  
Vol 59 (2) ◽  
pp. 505-509 ◽  
Author(s):  
Estrella Urtubey ◽  
Tod F. Stuessy ◽  
Karin Tremetsberger ◽  
Juan J. Morrone
Keyword(s):  
Transition Zone ◽  
South American ◽  
The South

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. 

scholarly journals Munroa argentina, a Grass of the South American Transition Zone, Survived the Andean Uplift, Aridification and Glaciations of the Quaternary

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0128559 ◽  
Author(s):  
Leonardo D. Amarilla ◽  
Ana M. Anton ◽  
Jorge O. Chiapella ◽  
María M. Manifesto ◽  
Diego F. Angulo ◽  
...  
Keyword(s):  
Transition Zone ◽  
South American ◽  
The South ◽  
Andean Uplift

An extraordinary new genus and species of Pseudachorutinae (Collembola: Neanuridae) from Colombia

Zootaxa ◽  
2019 ◽  
Vol 4609 (2) ◽  
pp. 373 ◽  
Author(s):  
JOSÉ G. PALACIOS-VARGAS
Keyword(s):  
Sea Level ◽  
Transition Zone ◽  
Type Species ◽  
New Genus ◽  
Slender Body ◽  
New Combination ◽  
South American ◽  
New Genus And Species ◽  
The South

A new genus of springtail, Sernatropiella gen. nov., from Cundinamarca province, Colombia, was found at an altitude close to 3.000 m above sea level. It is the largest Neanuridae known in the Northern part of the South American Transition Zone. It is characterized by the presence of a strong hypertrichosis, five eyes per side, very small moruliform postantennal organ and a long buccal beak. Mouth parts very thin and slender. Body with paratergal areas different from other Pseudachorutinae of the region. Thorax and abdominal segments I and II with pre- and post-segmental tergites with setae, and most remarkable is the presence of pseudocelli on head, thorax and abdomen of the type species Sernatropiella pinzonae gen. et sp. nov. A new combination for Neotropiella malkini Arlé, 1981 as Sernatropiella malkini (Arlé, 1981) comb. nov. is given and is considered as a member of the new genus. 

Biogeographic origins and floristic affinities of the bryophytes of the Tota-Bijagual-Mamapacha complex in the Páramos of Boyacá, Colombia

Phytotaxa ◽  
2020 ◽  
Vol 477 (2) ◽  
pp. 171-193
Author(s):  
JORGE ENRIQUE GIL-NOVOA ◽  
MARÍA E. MORALES-PUENTES ◽  
JORGE D. MERCADO GÓMEZ
Keyword(s):  
Transition Zone ◽  
Plant Species ◽  
Endemic Species ◽  
High Elevation ◽  
Environmental Services ◽  
South American ◽  
The South ◽  
The Andes ◽  
Biogeographic Regionalization ◽  
Surface And Groundwater

Páramos are Neotropical high-elevation isolated ecosystems in the Andes. These areas are inhabited by many distinct plant species, such as bryophytes, which provide environmental services including the storage and regulation of surface and groundwater; however, the diversity and biogeographic affinities of bryophytes are still unknown. We used phytogeographic analysis and biogeographic regionalization approaches to determine the biogeographic origins and floristic affinities of this flora in the Tota-Bijagual-Mamapacha (TBM) páramos complex. We found 219 species of bryophytes, 145 mosses, and 75 liverworts. These species are mainly of Neotropical origin, although we also found relationships with Ethiopian, Nearctic, Australian, Antarctic, Palearctic and Oriental regions. According to Morrone (2014), the TBM is located in the South American Transition Zone, the Páramo province, and the Páramos de la cordillera Oriental biogeographic district. The TBM had important floristic relationships with the South Brazilian subregion and the Magdalena province. We found no endemic species to the TBM complex, but identified several endemic species for the Andean páramos.

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