Agaricus globocystidiatus: a new neotropical species with pleurocystidia in Agaricus subg. Minoriopsis

Phytotaxa ◽  
2017 ◽  
Vol 314 (1) ◽  
pp. 64 ◽  
Author(s):  
MARIANA DE PAULA DREWINSKI ◽  
NELSON MENOLLI JUNIOR ◽  
MARIA ALICE NEVES

Agaricus is a monophyletic genus with a worldwide distribution and more than 400 described species. The genus grows on soil and can be easily recognized by the presence of an annulus on the stipe and free lamellae which become dark brown with spore maturation. Although Agaricus is easily recognized in the field because of its macroscopic characters, identification at the species level is difficult. Based on specimens collected in the states of Paraná and Santa Catarina, in the south of Brazil, we propose a new species Agaricus globocystidiatus. The new taxon is distinguished mainly by the presence of pleurocystidia, a rare morphological character in Agaricus. Molecular analyses based on nuc rITS1-5.8-ITS2 (ITS) barcode sequences show that A. globocystidiatus belongs to Agaricus subg. Minoriopsis.

Phytotaxa ◽  
2016 ◽  
Vol 268 (3) ◽  
pp. 193 ◽  
Author(s):  
FERNANDA T. F. LINHARES ◽  
MATEUS A. RECK ◽  
PABLO P. DANIËLS ◽  
MARIA ALICE NEVES

Gloeocantharellus has an amphi-Pacific distribution, with five known neotropical species. Gloeocantharellus corneri was the only species in the genus recorded from Brazil. A new species, Gloeocantharellus aculeatus, was collected in the Atlantic Forest in the states of Espírito Santo and Santa Catarina of Brazil, and is described based on morphological and molecular characteristics. It is distinguished from other species in the genus by the orange to salmon pileus with slightly fibrillose margin, squamulose to pulverulent stipe, and aculeate basidiospores. The results of molecular analyses show that G. aculeatus is a distinct species and is closely related to G. corneri and G. echinosporus.


ZooKeys ◽  
2019 ◽  
Vol 818 ◽  
pp. 35-42
Author(s):  
Stefano Speranza ◽  
Massimo Olmi ◽  
Adalgisa Guglielmino ◽  
Mario Contarini

A new species ofGonatopusLjungh, 1810,G.jaliscanussp. n., from Jalisco, Mexico, is described and illustrated. In the Neotropical region,G.jaliscanusis similar toG.forestalisOlmi, 1998, but it is distinguished by the black mesosoma (except prothorax, mesoscutum, and mesoscutellum that are yellow), and the metapostnotum being granulated and not rugose; inG.forestalisthe mesosoma is completely black and the metapostnotum is granulated and strongly rugose. In the Nearctic region, the new species is morphologically similar toG.currieiKrombein, 1962, but it is distinguished by the dull and granulated metapostonotum; inG.currieithe metapostnotum is shiny and unsculptured. The new species belongs toGonatopusgroup 7. The keys to the females of the Nearctic and Neotropical species of this group are modified to include the new taxon.


Phytotaxa ◽  
2021 ◽  
Vol 516 (2) ◽  
Author(s):  
ROBERTO GENNAIO ◽  
GIUSEPPE PELLEGRINO

Serapias ausoniae, here described as a new species, is known only from the southern part of the Apulia, Italy. The new taxon is morphologically similar to S. parviflora but is larger than sympatric S. parviflora specimens. Serapias ausoniae is characterized by larger floral elements, in particular, the bract is longer (~ 5.0 cm) and wider (~ 1.5 cm) and the dimensions of epichile, hypochile, petals and sepals are on average 40–50% larger than S. parviflora. Karyological analyses showed that the new taxon is a tetraploid (2n = 72), whereas sympatric and allopatric S. parviflora specimens are diploids (2n = 36). Moreover, genetic analyses suggest that the new taxon is of autopolyploid origin.


Zootaxa ◽  
2007 ◽  
Vol 1614 (1) ◽  
pp. 17-29 ◽  
Author(s):  
MELANIE L.J. STIASSNY ◽  
VICTOR MAMONEKENE

A new dwarf alestid from the vicinity of Inga on the lower Congo River, Bas Congo Province, Democratic Republic of Congo is described. Assignment of the new taxon to the poorly defined genus, Micralestes, is discussed and justified on the basis of available morphological character data. With the recognition of Micralestes schelly sp. nov., a total of six Micralestes are now known to inhabit the 350 km stretch of the Congo River from Pool Malebo to Boma near the river’s estuary. These are Micralestes acutidens (Peters, 1852), Micralestes humilis Boulenger, 1899, Micralestes lualabae Poll, 1967, Micralestes holargyreus (Günther, 1873), Micralestes stormsi Boulenger, 1902, and the new species Micralestes schelly. Of these Micralestes schelly and Micralestes holargyreus are considered herein as restricted-range endemics of the lower Congo River. An illustrated key to Micralestes of the lower Congo River is provided.


2021 ◽  
Vol 71 ◽  
pp. 711-722
Author(s):  
Roberto Leonan M. Novaes ◽  
Don E. Wilson ◽  
Ricardo Moratelli

Abstract The genus Myotis comprises a diverse group of vesper bats with worldwide distribution. Twenty-eight neotropical species are currently recognized. Based on a morphological approach, we describe a new species of Myotis from the Uruguayan Pampas grasslands, an ecoregion under high anthropogenic pressure with a largely unknown bat fauna. Qualitative and quantitative morphological analyses support the recognition of the new species and we present a set of external and cranial diagnostic characters by comparing them with other neotropical Myotis species. The new species reassembles Myotis riparius, but can be distinguished by a set of qualitative and quantitative morphological traits, including its clearly bicolored dorsal fur, tricolored ventral fur, a pelage on the dorsal surface of uropatagium, sagittal crest lower, braincase lower in lateral view and overall smaller size.


Zootaxa ◽  
2002 ◽  
Vol 98 (1) ◽  
pp. 1 ◽  
Author(s):  
TERRY A. WHEELER ◽  
JESSICA FORREST

Elachiptera cultrata sp. nov. is described from the Galápagos Islands, Ecuador. This species is most similar to the northern Neotropical species E. attenuata (Adams), except for the shape of the arista and the male genitalia. The monotypic genus Ceratobarys is synonymized with Elachiptera, and its type species C. eulophus (Loew) transferred to Elachiptera as E. eulophus comb. nov. The only morphological character that distinguishes the two genera is the presence of a long, apical, hind-tibial spur in Ceratobarys. Although this character defines some apparently monophyletic genera of Chloropidae, its presence and size are subject to homoplasy in other genera. The presence of a small hind-tibial spur in some species of Elachiptera, and the great similarity in other external and genitalic characters between Ceratobarys and some species of Elachiptera makes recognition of Ceratobarys untenable.


Zootaxa ◽  
2004 ◽  
Vol 584 (1) ◽  
pp. 1 ◽  
Author(s):  
Toufiek Samaai ◽  
Robert Keyzers ◽  
Michael Davies-Coleman

Strongylodesma aliwaliensis, a new species of Strongylodesma L vi, 1969 (Porifera; Demospongiae; Poecilosclerida; Latrunculiidae) is described from the subtropical waters along the east coast of South Africa. This species differs from both the type species, Strongylodesma areolata L vi (1969) and the two known South African species, S. tsitsikammaensis Samaai and Kelly (2003) and S. algoaensis Samaai and Kelly (2003), in the structures of the choanosome, length and morphology of the strongyles and colouration. The choanosome of S. aliwaliensis sp. nov. is divided into thick convoluted tracts, which may or may not form discrete chambers, the latter character first observed in Tsitsikamma favus Samaai and Kelly (2002). This structure however, is not unique for Tsitsikamma (Family Latrunculiidae), as evidence also shows that species of Zyzzya (Acarnidae) have a choanosomal structure reminiscent of that of Tsitsikamma (Samaai and Kelly, 2002). The choanosomal architecture of S. aliwaliensis sp. nov however, differs considerably from Tsitsikamma favus Samaai and Kelly (2002) in that the choanosome lacks the discrete honey comb-like chambers as found in T. favus Samaai and Kelly (2002). Thus, the convoluted tract morphological character as observe in Strongylodesma aliwaliensis sp. nov, Tsitsikamma and Zyzzya holds no phylogenetic weight; it is cross taxon like the axial compression of Axinellidae, Raspailiidae, and the desmas of Lithistids and therefore cannot be used as a character for inclusion of this new species within either Tsitsikamma or Zyzzya. The inclusion of the new taxon within Strongylodesma is strongly supported based on the presence of strongyles, the fungiform areolate porefields and structure of the ectosomal layer. Preliminary chemical analysis of the sponge has confirmed the presence of several pyrroloiminoquinone products, including makaluvamine I.


Phytotaxa ◽  
2014 ◽  
Vol 183 (1) ◽  
pp. 44 ◽  
Author(s):  
Emilaine Biava Dalmolim ◽  
Ana Zannin

Bothriochloa catharinensis, a new species of Andropogoneae (Poaceae: Panicoideae, Andropogoneae) endemic to montane grasslands associated with araucaria forest in the state of Santa Catarina, Southern Brazil, is described and illustrated. Morphological similarities between the new taxon and other species of Bothriochloa are discussed. Comments on habitat, morphology, distribution and conservation status are provided.


Limnology ◽  
2021 ◽  
Author(s):  
Renata Manconi ◽  
Dirk Erpenbeck ◽  
Jane Fromont ◽  
Gert Wörheide ◽  
Roberto Pronzato

AbstractA recent discovery of freshwater sponges in an unexplored hydrographic basin in north-western Australia provided the opportunity to investigate the genus Corvospongilla Annandale (Spongillida: Spongillidae) using integrative systematics. Emendation of the genus diagnosis is provided. A comparative analysis of a Corvospongilla global dataset of morphological traits together with biogeographic patterns disclosed a new Australasian Corvospongilla species and along with molecular analyses provided the basis for a phylogenetic and phylogeographic tree for some Asian, Afrotropical and Australasian lineages.


Zootaxa ◽  
2017 ◽  
Vol 4300 (2) ◽  
pp. 269 ◽  
Author(s):  
WELLINGTON D. FERREIRA ◽  
LETÍCIA A. DE OLIVEIRA ◽  
TIAGO G. INEZ ◽  
MARCEL G. HERMES

A new Neotropical species of Pirhosigma Giordani Soika, 1978 is described, Pirhosigma transfluvium Ferreira & Oliveira. The male of Pirhosigma limpidum Giordani Soika, 1978 is reported for the first time. An illustrated identification key is presented for all currently recognized species of Pirhosigma. 


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