scholarly journals Broomeia congregata Berk., 1844 (Agaricales: Broomeiaceae): New distribution record for San Luis, Argentina

Check List ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 531 ◽  
Author(s):  
Mónica A. Lugo ◽  
Esteban M. Crespo ◽  
Kentaro Hosaka ◽  
Laura S. Domínguez
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
San Luis ◽  
Ecological Implications ◽  
New Finding ◽  
Catamarca Province ◽  
Distribution Record ◽  
New Distribution ◽  
Scanning Electron

Broomeia congregata Berk. is a gasteroid fungus with a predominant African distribution. However, it has been documented twice, in 1912 and 1973, as occurring in Catamarca Province (Argentina, South America). Nearly forty years later, a new finding is reported for San Luis Province, Argentina. The report includes new morphological information based on scanning electron microscopy (SEM). In addition, some phenological, biogeographical and ecological implications concerning B. congregata are discussed.

scholarly journals Range extension of the invasive Potamopyrgus antipodarum (Gray, 1843) (Gastropoda, Tateidae) in Chile, and a summary of its distribution in the country

Check List ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 621-626 ◽  
Author(s):  
Gonzalo A. Collado ◽  
Carmen G. Fuentealba
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Zealand ◽  
South America ◽  
River Basin ◽  
Dna Barcode ◽  
Potamopyrgus Antipodarum ◽  
Range Extension ◽  
First Time ◽  
Scanning Electron

The New Zealand mudsnail Potamopyrgus antipodarum (Gray, 1843) has been considered as one of the most invasive mollusks worldwide and recently was listed among the 50 most damaging species in Europe. In the present paper, we report for the first time the presence of P. antipodarum in the Maule river basin, Chile. The identity of the species was based on anatomical microdissections, scanning electron microscopy comparisons, and DNA barcode analysis. This finding constitutes the southernmost record of the species until now in this country and South America.

scholarly journals Morphological aspects of immature stages of Migonemyia migonei (Diptera: Psychodidae, Phlebotominae), an important vector of Leishmaniosis in South America, described by scanning electron microscopy

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242163
Author(s):  
Eric Fabrício Marialva ◽  
Nágila F. Secundino ◽  
Fernando F. Fernandes ◽  
Helena R. C. Araújo ◽  
Claudia M. Ríos-Velásquez ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Leishmania Infantum ◽  
Immature Stages ◽  
Vector Species ◽  
Future Studies ◽  
Larval Stages ◽  
Morphological Aspects ◽  
Scanning Electron

We describe the immature stages of Migonemyia migonei, which is the vector of Leishmania (Viannia) braziliensis, the etiological agent of cutaneous leishmaniasis in South America, and a putative vector of Leishmania infantum chagasi. Scanning Electron Microscopy (SEM) was used to refine the description of the structures of the egg, all instar larvae, and the pupa. The eggs have polygonal cells on the egg exochorion, and differences between larval and pupal chaetotaxy have been highlighted. Different sensillary subtypes—trichoidea, basiconica, coelonica and campanoformia—were observed in the larval stages. The results presented herein contribute to the taxonomy of Mg. migonei and may contribute to future studies on the phylogeny of this important vector species.

scholarly journals Further notes on the morphology and distribution of Neopaxillus echinospermus (Agaricales, Basidiomycota) in Southern Brazil

Check List ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 1834 ◽  
Author(s):  
Alexandre Gonçalves dos Santos Silva-Filho ◽  
Gilberto Coelho ◽  
Vagner Gularte Cortez
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Rio Grande ◽  
Morphological Features ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Scanning Electron

Neopaxillus echinospermus is a common but poorly understood agaric species from South America (Argentina, Bolivia, Brazil and Paraguay). In this paper, we discuss conflicting morphological features reported in the literature and expand the distribution of the species to Seasonal Deciduous and Semideciduous Forests from Rio Grande do Sul and Paraná states, respectively, in Southern Brazil. Hyphal structure of the pileipellis, presence of cheilocystidia and caulocystidia, presence of clamp connections and oleiferous (thrombopleurous) hyphae, and the basidiospore morphology under scanning electron microscopy are illustrated and discussed in detail.

scholarly journals Description of the first species of Glomeridesmida from Thailand (Diplopoda, Glomeridesmida, Glomeridesmidae)

ZooKeys ◽  
2021 ◽  
Vol 1024 ◽  
pp. 137-156
Author(s):  
Thomas Wesener ◽  
Nattarin Wongthamwanich ◽  
Leif Moritz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Morphological Characters ◽  
Southern India ◽  
Type Locality ◽  
Se Asia ◽  
The Family ◽  
First Time ◽  
Scanning Electron

With three genera and 35 previously known species from India, SE Asia, Central and South America, Glomeridesmida are one of the least diverse Diplopoda groups. Here we describe Glomeridesmus siamensissp. nov., the first species of the order Glomeridesmida from Thailand. The geographically nearest confamiliar species have been described from southern India, Sumatra and Java. The species is described combining photographs, light- and scanning electron microscopy of mature and younger males, females and juveniles. Several characters are illustrated for the first time for an Asian representative of the family Glomeridesmidae. In addition to the type locality of G. siamensissp. nov. from Krabi province, locality data of unidentified Glomeridesmus from Thailand are also given. These data are providing further evidence that the Glomeridesmida are not uncommon, but overlooked as they are small and difficult to collect. The unusual telopods and other morphological characters of G. siamensissp. nov. differ considerably from the few Glomeridesmus males described from Central and South America as well as from India, but the unclear status of two generic names available for species from Indonesia prevents us from adding another generic name to this small and understudied order.

Gomphonema frequentiformis (Metzeltin & Krammer) comb. nov. (Bacillariophyta): ecology and taxonomy of a Neotropical diatom

Phytotaxa ◽  
2020 ◽  
Vol 439 (3) ◽  
pp. 265-275
Author(s):  
FABIANE F. DE ALMEIDA ◽  
LUC ECTOR ◽  
EDINALDO SANTOS SILVA ◽  
CARLOS E. WETZEL
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Distribution Data ◽  
Apical Pore ◽  
Scanning Electron

The transfer of Encyonopsis frequentiformis Metzeltin & Krammer to the genus Gomphonema Ehrenberg is proposed based on observations using light and scanning electron microscopy. The taxon is characterized by lanceolate heteropolar valves, with both apices strongly capitate, two apical pore fields, and elongated areolae slit-like and the internal stigma opens in a slit. Heteropolarity of the specimens measured and other shared similarities with the genus Gomphonema (APF, areolae, external and internal aperture of the isolated pore, pseudosepta at both apices) allows us to classify this species into the genus Gomphonema. Morphological, ecological and distribution data in South America are presented and discussed based on available literature for this Neotropical taxon.

Planothidium incuriatum sp. nov. a widely distributed diatom species (Bacillariophyta) and type analysis of Planothidium biporomum

Phytotaxa ◽  
2013 ◽  
Vol 138 (1) ◽  
pp. 43 ◽  
Author(s):  
CARLOS E. WETZEL ◽  
BART VAN DE VIJVER ◽  
LUCIEN HOFFMANN ◽  
LUC ECTOR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
North America ◽  
South America ◽  
Related Species ◽  
Type Material ◽  
Diatom Species ◽  
Type Analysis ◽  
The World ◽  
Scanning Electron

Planothidium incuriatum sp. nov. is described from freshwater samples from Europe and South America. It is compared with the type material of Achnanthes biporoma (=Planothidium biporomum), described from North America, to differentiate it from the new, related species. Species morphologies were compared using both light and scanning electron microscopy. Planothidium incuriatum can be differentiated from P. biporomum by its valve outline with more rostrate apices (instead of capitate) and by the areolation pattern of the striae in the raphe less valve (higher number of rows of areolae per stria). Distribution of P. incuriatum was determined from worldwide iconographic literature records where it was often identified as Planothidium biporomum among other names here detailed. While P. incuriatum appears to be widely distributed around the world, P. biporomum is, according to verified records, far more restricted.

scholarly journals Morphological aspects of immature stages of Migonemyia migonei (Diptera: Psychodidae, Phlebotominae) an important vector of Leishmaniosis in South America by scanning electron microscopy

2020 ◽  
Author(s):  
Eric F. Marialva ◽  
Nágila F. Secundino ◽  
Fernando F. Fernandes ◽  
Helena R. C. Araújo ◽  
Claudia M. Ríos-Velásquez ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Immature Stages ◽  
Important Species ◽  
Future Studies ◽  
Larval Stages ◽  
Morphological Aspects ◽  
Species Vector ◽  
Scanning Electron

We describe the immature stages of Migonemyia migonei, which is the vector of Leishmania (Viannia) braziliensis, the aetiological agent of cutaneous leishmaniasis in South America, and a putative vector of Leishmania infantum chagasi. Scanning Electron Microscopy (SEM) was used to refine the description of the structures of eggs, all instar larvae and pupa. The eggs have polygonal cells on the egg exochorion, and differences between larval and pupal chaetotaxy are highlighted. Different sensillary subtypes were observed in the larval stages, among the types trichoidea, basiconica, coelonica and campanoformia. These results contribute to the taxonomy of Mg. migonei and may contribute to future studies on the phylogeny of this important species vector.

scholarly journals Three new species of Pleurothallis (Orchidaceae: Pleurothallidinae) in subsection Macrophyllae-Fasciculatae from northern South America

Lankesteriana ◽  
2016 ◽  
Vol 16 (3) ◽  
Author(s):  
Mark Wilson ◽  
Luis Baquero ◽  
Katharine Dupree ◽  
Marco M. Jiménez ◽  
Cheryl M. LeBlanc ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
South America ◽  
Molecular Data ◽  
Phylogenetic Position ◽  
History Of ◽  
Northern South America ◽  
Three New Species ◽  
Scanning Electron

The history of the taxonomy of Pleurothallis R.Br. subsection Macrophyllae-Fasciculatae and recent descriptions in that group are summarized. The phylogenetic position of the group based on preliminary molecular data and the appropriateness of the proposed genera Acronia C.Presl. and Zosterophyllanthos Szlach. & Marg. for this group are discussed. Three new species from northern South America are described: Pleurothallis rubrifolia from southeastern Ecuador and northeastern Peru; Pleurothallis nangaritzae from southeastern Ecuador; and Pleurothallis castanea. Labellar micromorphology examined by scanning electron microscopy for P. rubrifolia and P. nangaritzae is discussed in relation to taxonomy and possible pollinator interactions.

Taxonomic revision of the genus Chaethippus Duda, 1930 (Diptera: Chloropidae) with the description of four species

Zootaxa ◽  
2020 ◽  
Vol 4802 (1) ◽  
pp. 129-140
Author(s):  
PAULA RAILE RICCARDI
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
South America ◽  
Taxonomic Revision ◽  
Morphological Features ◽  
Monotypic Genus ◽  
Scanning Electron

The monotypic genus Chaethippus Duda is revised, including the description of four new species from South America and a key to all species. Detailed illustrations of morphological features are also given using light and scanning electron microscopy. The affinities of Chaethippus within Oscinellinae are briefly addressed. 

scholarly journals The genus Gertrudiella Broth. (Pottiaceae, Bryophyta) in Paraguay

Check List ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 2039 ◽  
Author(s):  
Soledad Jimenez ◽  
Guillermo M. Suárez
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Transverse Section ◽  
First Record ◽  
Distribution Map ◽  
Central Strand ◽  
Scanning Electron

As part of a study of the bryophytes of South America, some samples collected in Paraguay were identified as Gertrudiella uncinicoma, a species of Pottiaceae characterized by the presence of a well-developed central strand and a thick-walled hyalodermis on the stem, lanceolate leaves, laminal cells ventrally mammillose, and several rows of guides cells at the transverse section of the costae. This work represents the first record of the genus from Paraguay. A complete description, ecological comments, illustrations in optical and scanning electron microscopy, and a distribution map are presented.

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