Revision of South American stiletto fly genus Argolepida Metz & Irwin (Diptera: Therevidae: Therevinae)

Zootaxa ◽  
2021 ◽  
Vol 5068 (2) ◽  
pp. 151-185
Author(s):  
MICHAEL E. IRWIN ◽  
SHAUN L. WINTERTON
Keyword(s):  
New Species ◽  
South America ◽  
South American ◽  
Key To Species ◽  
Southern South America

The stiletto fly genus Argolepida Metz & Irwin, 2003 is revised. Members of this genus are diminutive, yet distinctive, flies restricted to southern South America. Argolepida rivulosa (Kröber, 1928) is redescribed and seven new species are described and figured. A key to species is presented.  

The genus Acellomyia González, a new taxonomic arrangement of its species and descriptions of a new genus and two new species from southern South America (Diptera: Tabanidae: Diachlorini)

Zootaxa ◽  
2017 ◽  
Vol 4337 (4) ◽  
pp. 523
Author(s):  
CHRISTIAN R. GONZÁLEZ
Keyword(s):  
Species Richness ◽  
New Species ◽  
South America ◽  
New Genus ◽  
Morphological Diversity ◽  
Southern Chile ◽  
Key To Species ◽  
Southern South America ◽  
Two New Species ◽  
Morphological Differences

The tabanid tribe Diachlorini (Diptera) is the most genus-rich tribe in the Tabanidae; the tribe is cosmopolitan, but the greatest species richness and morphological diversity are found in the Australasian and Neotropical Regions. A new arrangement for the species of Acellomyia González is given; Acellomyia lauta (Hine) is transferred to a new genus, Montismyia gen.n., based on its morphological differences from Acellomyia and geographical distribution. The morphological differences between Acellomyia and Montismyia gen. n. are discussed. Two new species, Acellomyia casablanca sp.n. and Acellomyia puyehue sp.n., are described from specimens collected in southern Chile. Comparison of the morphology of Acellomyia paulseni mapuche (Coscarón & Philip) stat.nov. indicate that they should be elevated to species rank. A key to species of Acellomyia is provided and diagnostic characters are illustrated. 

On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae)

Zootaxa ◽  
2017 ◽  
Vol 4216 (3) ◽  
pp. 261 ◽  
Author(s):  
MIGUEL SIMÓ ◽  
ARNO A. LISE ◽  
GABRIEL POMPOZZI ◽  
ÁLVARO LABORDA
Keyword(s):  
New Species ◽  
South America ◽  
Posterior Margin ◽  
Wolf Spider ◽  
South American ◽  
Southern Brazil ◽  
South American Species ◽  
Southern South America ◽  
First Time ◽  
A New Species

Three species of the genus Allocosa Banks, 1900 from southern South America are redescribed: Allocosa alticeps (Mello-Leitão, 1944), A. brasiliensis (Petrunkevitch, 1910) and A. senex (Mello-Leitão, 1945). The female of A. senex is described for the first time and the species is revalidated. A new species, A. marindia sp. nov. from southern Uruguay and southern Brazil is described. The new species is distinguished by the flattened terminal apophysis of the male bulb and the conspicuous pointed projections on the posterior margin of the female epigynum. The species inhabits in sandy estuarine and oceanic coasts with psammophile vegetation. 

South American Gasteromycetes. II. The genus Vascellum

1988 ◽  
Vol 66 (7) ◽  
pp. 1285-1307 ◽  
Author(s):  
M. H. Homrich ◽  
J. E. Wright
Keyword(s):  
New Species ◽  
South America ◽  
New Combination ◽  
South American ◽  
Southern South America

In this second contribution to the Gasteromycetes of southern South America seven species of Vascellum Smarda found in that area are described. Of these, V. pampeanum (Speg.) Homrich is a new combination and V. cingulatum Homrich, V. cuzcoense Homrich, V. delicatum Homrich, and V. hyalinum Homrich are new species. Complete descriptions and illustrations of all features of the species are given, together with a key for their identification.

scholarly journals Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
E. Martín Hechenleitner ◽  
Léa Leuzinger ◽  
Agustín G. Martinelli ◽  
Sebastián Rocher ◽  
Lucas E. Fiorelli ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
South America ◽  
Late Cretaceous ◽  
South American ◽  
Santo Domingo ◽  
Southern South America ◽  
Continental Scale ◽  
Nesting Site ◽  
La Rioja

Abstract South American titanosaurians have been central to the study of the evolution of Cretaceous sauropod dinosaurs. Despite their remarkable diversity, the fragmentary condition of several taxa and the scarcity of records outside Patagonia and southwestern Brazil have hindered the study of continental-scale paleobiogeographic relationships. We describe two new Late Cretaceous titanosaurians from Quebrada de Santo Domingo (La Rioja, Argentina), which help to fill a gap between these main areas of the continent. Our phylogenetic analysis recovers both new species, and several Brazilian taxa, within Rinconsauria. The data suggest that, towards the end of the Cretaceous, this clade spread throughout southern South America. At the same locality, we discovered numerous accumulations of titanosaurian eggs, likely related to the new taxa. With eggs distributed in three levels along three kilometres, the new site is one of the largest ever found and provides further evidence of nesting site philopatry among Titanosauria.

Notes on South American Carex section Schiedeanae and description of the new species Carex roalsoniana

Phytotaxa ◽  
2016 ◽  
Vol 260 (2) ◽  
pp. 185 ◽  
Author(s):  
PEDRO JIMÉNEZ-MEJÍAS ◽  
MARCIAL ESCUDERO
Keyword(s):  
New Species ◽  
South America ◽  
The Other ◽  
South American ◽  
South American Species ◽  
Southern South America ◽  
Clear Cut ◽  
Incertae Sedis ◽  
The North ◽  
Northern South America

The new species Carex roalsoniana (Cyperaceae) from Ecuador and Peru (northern South America) is here described and illustrated. It is related to C. subandrogyna, a species that has been placed in section Schiedeanae. An additional incertae sedis species, Carex lepida from Ecuador, may also be related to them. Section Schiedanae is a morphologically well-defined group previously known from southern North America (southern USA and Mexico), and southern South America (northern Argentina and southern Bolivia). The new species presents very clear-cut characters that distinguish it from all the other members of the section. Specifically, C. roalsoniana and C. subandrogyna differ in utricle morphology (3.6–4.1 mm long, with a beak 0.5–1.2 mm in C. roalsoniana vs. 2.4–2.9 mm long, with a beak up to 0.3 mm long or beakless in C. subandrogyna) and leaves (up to 3–4 mm wide, stiff, in C. roalsoniana vs. up to 5.6–7.5 mm wide, very soft in C. subandrogyna). Carex lepida is easily distinguished from C. roalsoniana and C. subandrogyna because its habit (rhizomes elongated vs. rhizomes densely caespitose) and number of stigmas (two vs. three). The glabrous nerveless utricles of the three South American species distinguish them from the North American species of the section, which have scabrid to hispidulous, conspicuously nerved utricles. The formal ascription of C. lepida among the South American members of section Schiedeanae is also discussed. A brief key to distinguish C. lepida and C. roalsoniana from the other species of the section and the co-occurring species is provided.

The genus Swiftopecten Hertlein, 1936, (Bivalvia: Pectinidae) in the Tertiary of southern South America

1995 ◽  
Vol 69 (6) ◽  
pp. 1054-1059 ◽  
Author(s):  
Claudia J. Del Río
Keyword(s):  
New Species ◽  
South America ◽  
Fossil Record ◽  
Late Eocene ◽  
South American ◽  
Sedimentary Sequence ◽  
American Continent ◽  
Antarctic Region ◽  
Southern South America ◽  
South American Continent

The presence of Swiftopecten Hertlein, 1936, in Patagonia (Argentina), a region situated in the southeastern extreme of the South American continent, is the oldest and southernmost fossil record of the genus. Furthermore, its occurrence during the Late Eocene in the circum-Antarctic region suggests that its origin was in the Southern Hemisphere; it has been known from Japan and the eastern Pacific, ranging from Miocene to Holocene (Moore, 1984). Swiftopecten iheringii new species, from the Late Eocene-Early Miocene sedimentary sequence of Patagonia, is described and illustrated.

scholarly journals Paspalum chilense (Poaceae, Paspaleae): A new species from southern South America

Phytotaxa ◽  
2015 ◽  
Vol 201 (3) ◽  
pp. 240
Author(s):  
María Paz Catanzaro ◽  
Marisa Graciela Bonasora ◽  
Pablo Rafael Speranza ◽  
Marcelo Medina-Nicolas ◽  
José F.M. Valls ◽  
...  
Keyword(s):  
New Species ◽  
South America ◽  
Molecular Evidence ◽  
Southern South America ◽  
The Core ◽  
A New Species

Paspalum chilense, a new species from Chile belonging to the informal Notata group, is described and illustrated on the basis of morphological, cytological and molecular evidence. Our evidence supports its affinity with P. barretoi and P. nummularium, from Brazil, from which it probably diverged by vicariant speciation. The limited available material of the new species was previously identified as P. pumilum or P. minus. A new key to the species of the core Notata group is provided.

Salicornia cuscoensis (Amaranthaceae/Chenopodiaceae), a new species from Peru (South America)

Phytotaxa ◽  
2017 ◽  
Vol 319 (3) ◽  
pp. 254 ◽  
Author(s):  
M. ÁNGELES ALONSO ◽  
MANUEL B. CRESPO ◽  
HELMUT FREITAG
Keyword(s):  
New Species ◽  
South America ◽  
Morphological Characters ◽  
Tierra Del Fuego ◽  
South American ◽  
Habitat Distribution ◽  
Closely Related Species ◽  
Molecular Analyses ◽  
Southern Patagonia ◽  
A New Species

The name Salicornia cuscoensis given to a plant from high Andean saltmarshes near Cusco [Cuzco] and Ayacucho, Peru (South America) is validated by a diagnosis and description. The main morphological characters that separate S. cuscoensis from other closely related species are creeping habit, delicate branches, inflorescence of short and thin spikes, and seed indumentum. The new species clearly differs from other perennial Salicornia taxa growing in high Andean saltmarshes such as S. pulvinata and S. andina. The former forms small compact cushions producing very short, few-flowered inflorescences. The latter shows woody stems and forms larger rounded carpets. Morphologically, S. cuscoensis is also similar to S. magellanica, a species growing along the seashore in southern Patagonia and Tierra del Fuego, but the latter has shorter and wider inflorescences and larger seeds with a different type and arrangement of indumentum. Molecular analyses also supported the separation of S. cuscoensis. Data on habitat, distribution and phylogenetic relationships are presented for the new species and its relatives, and an identification key is given for the South American taxa of the genus Salicornia.

New species of South American Agalliinae leafhoppers (Homoptera: Cicadellidae)

1979 ◽  
Vol 10 (4) ◽  
pp. 244-256 ◽  
Author(s):  
Dwight M. Delong ◽  
Rauno E. Linnavuori
Keyword(s):  
New Species ◽  
South America ◽  
Male Genitalia ◽  
South American ◽  
First Time

AbstractThe following new Agalliinae species from South America are described: Agalliopsis atahualpa n.sp. (Peru), A. lamellaris n.sp. (Bolivia), A. bifida n.sp. (Bolivia), A. appendiculata n.sp. (Bolivia), A. imitator n.sp. (Peru), A. vittata n.sp. (Peru), A. harpago n.sp. (Bolivia), A. virgator n.sp. (Bolivia), A. curiche n.sp. (Colombia), A. spinosa n.sp. (Peru),A. bicuspidata n.sp. (Peru), Agallia santarema n.sp. (Brazil), A. sinchona n.sp. (Peru), A. estebana n.sp. (Bolivia), A. longicauda n.sp. (Brazil). The male genitalia of Euragallia lata Om. are described for the first time.

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