A new small-celled diatom from Brazil - Luticola minutissima sp. nov., with comparison to the type of the Antarctic L. neglecta Zidarova, Levkov & Van de Vijv

Phytotaxa ◽  
2022 ◽  
Vol 530 (3) ◽  
pp. 287-294
Author(s):  
MATEUSZ RYBAK ◽  
ŁUKASZ PESZEK ◽  
ŁUKASZ SKOCZYLAS ◽  
THELMA ALVIM VEIGA LUDWIG

The samples for this study were collected from terrestrial mosses and lichens growing on palm tree trunks and concrete walls in the city of Rio de Janeiro, south-eastern Brazil. During the investigation on diatom diversity, a new species from the genus Luticola was found. The new species occurred individually at all sampling sites. The aim of this paper is to provide a morphological and ecological description of Luticola minutissima sp. nov. from an aerophytic environment. The species is characterized by a small valve size (5.2–16.8 μm length and 3.7–4.4 wide) and abruptly hooked proximal raphe endings (ca. 90-degree angle). Additionally for comparison, type material of the most similar species, Luticola neglecta Zidarova, Levkov & Van de Vijver, was studied and new information for the ultrastructure of the latter species is provided as well.

Phytotaxa ◽  
2020 ◽  
Vol 450 (3) ◽  
pp. 285-292
Author(s):  
THIAGO FERNANDES ◽  
MATHEUS FORTES SANTOS ◽  
JOÃO MARCELO ALVARENGA BRAGA

Myrcia amplifolia, a new species from the coastal forest of southern Bahia, eastern Brazil, is here described and compared with morphologically similar species. Additionally, a morphological plate, distribution map and conservation assessment of the species are presented. We assign the new species to Myrcia sect. Calyptranthes with a reasonable reliability due to the combination: presence of cataphylls, inflorescences sympodially branching at the base and calyptrate flowers. Myrcia amplifolia seems to be closely related to M. carioca, from which it can be distinguished through the leaf blades strongly coriaceous (vs. chartaceous in M. carioca), leaf venation very slightly raised and barely conspicuous abaxially (vs. venation strongly raised and conspicuous abaxially), inflorescences with a shorter main axis (75–110 mm long vs. 130–270 mm long), and shorter first lateral branch (3.3–19 mm long vs. 48–95 mm long), and the calyptra acuminate (vs. rounded or shortly apiculate). It is also similar to M. boanova, differing by the leaf blades significantly larger (31–60 × 10–20 cm vs. 7–13 × 4.1–5 cm in M. boanova) and strongly coriaceous (vs. chartaceous), and the calyptra acuminate (vs. rounded) and smaller (2.3–2.6 × ca. 1.8 mm vs. 3.5–3.7 × 3.5–4 mm).


Phytotaxa ◽  
2017 ◽  
Vol 299 (1) ◽  
pp. 118
Author(s):  
LUCIANO FERREIRA MARGALHO ◽  
GEOVANE DE SOUZA SIQUEIRA ◽  
PIERO G. DELPRETE ◽  
MILTON GROPPO

Simira robusta (Rubiaceae), a new species from the Atlantic Rainforest of the Espírito Santo state, south-eastern Brazil, is here described and illustrated, and compared with similar species. It most resembles S. grazielae, from which it differs by the larger inflorescences, antrorse pubescent flowers and fruits, and by its larger fruits. Its habitat and conservation status are discussed. A key to the species of Simira from Espírito Santo state is provided.


Phytotaxa ◽  
2013 ◽  
Vol 117 (2) ◽  
pp. 35 ◽  
Author(s):  
PEDRO DIAS ◽  
RENATA GIASSI UDULUTSCH ◽  
JOSÉ RUBENS PIRANI

A new species of Metrodorea (Rutaceae), M. concinna, is described and illustrated, and morphological, molecular phylogenetic, and distributional support for the new taxon and its relationships with morphologically similar species, as well as with sympatric ones, are explored. The new species is endemic to semideciduous forests of southeastern Bahia, eastern Brazil. It is distinct from other species of the genus mainly by the combination of shrubby to treelet habit, (sub)sessile leaves, sessile leaflets without conspicuous, dark glands on the abaxial surface, and by each carpel bearing one dorsal apophysis. In addition to the diagnostic morphological features, molecular data provide further support to the new taxon.


PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258454
Author(s):  
Paul Székely ◽  
Diana Székely ◽  
Leonardo Ordóñez-Delgado ◽  
Diego Armijos-Ojeda ◽  
Judit Vörös

We describe a new species of rain frog of the genus Pristimantis from the city of Loja, Southern Ecuador, based on an integrative taxonomy approach, combining molecular, morphological and bioacoustics data. Pristimantis lojanus sp. nov. is a medium sized species of the phylogenetically strongly supported P. phoxocephalus group, and its sister species is P. torresi. The new species can be easily distinguished from its closest congeners and morphologically similar species (that also have acuminate snout with a fleshy keel) by its characteristic advertisement call and morphological features (dorsum finely tuberculate with scattered larger tubercles, flanks without longitudinal lateral folds, no markings in axilla, groin or on concealed limb surfaces, and bronze iris). Additionally, we describe the advertisement call of its sister species, P. torresi. Finally, we detail the current situation of the amphibian species present in the city of Loja and its surroundings.


2019 ◽  
Vol 3 ◽  
pp. 169-174
Author(s):  
Michael Balke ◽  
Rodulfo Ospina-Torres ◽  
Yoandri S. Megna ◽  
Marco Laython ◽  
Lars Hendrich

The Colombian species of the genus Rhantus are reviewed. Rhantus bogotensissp. nov. is described and illustrated, based on specimens collected in the Altiplano of the Bogota region. It is compared with the similar species Rhantus franzi, R. vicinus, and R. crypticus. The Ecuadorian species Rhantus crypticus was found for the first time in the highlands of Nariño department. This is a new record for Colombia. Five species of Rhantus are presently known from Colombia.


Zootaxa ◽  
2009 ◽  
Vol 2120 (1) ◽  
pp. 27-38 ◽  
Author(s):  
RICARDO BOTERO-TRUJILLO ◽  
MARTHA C. ERAZO-MORENO ◽  
GUSTAVO A. PÉREZ

Microtityus bivicentorum sp. nov. is described based on two adult specimens of both sexes from a single locality near the city of Valledupar, northern Colombia. The new species is most similar to Microtityus desuzeae González-Sponga, 2001 and Microtityus joseantonioi González-Sponga, 1981 from Venezuela, and Microtityus franckei Botero-Trujillo & Noriega, 2008 from Colombia, with which it shares the absence of trichobothrium d 2 on femur, Eb 3 and Esb on pedipalp chela, and esb on fixed finger. With this description, the number of extant species of Microtityus is raised to 25, of which eleven are present in South America and two in Colombia. A map with the known distribution of M. bivicentorum sp. nov. and similar species is presented. Some remarks about the trichobothrial arrangement of M. joseantonioi are also included.


Author(s):  
A.N. Puzyrev

Information about the finds in the Udmurt Republic of two adventive Solanum species is reported. Of these, Solanum emulans is a new species for the flora of Russia. It is brought to the city of Izhevsk with North American grain. In 1993, three of its locations were discovered: at the Izhevsk railway station and in the wastelands in the courtyards of the Izhevsk bakery plant and the Izhevsk bread-receiving enterprise no. 2. Solanum scabrum is occasionally cultivated by amateur gardeners as an exotic plant. In a wild state, it has been known since 2000. To date, eleven of its locations are known in the cities of Izhevsk, Votkinsk, Mozhga, Sarapul, as well as in Zavyalovsky, Uvinsky, Yakshur-Bodinsky and Yarsky districts. Most of its finds are associated with dumps and municipal waste dumping sites. In the conditions of the Udmurt Republic, Solanum emulans and Solanum scabrum are ephemerophytes. The features that distinguish Solanum emulans and Solanum scabrum from morphologically similar species such as Solanum americanum, Solanum nigrum., Solanum retroflexum are given.


2008 ◽  
Vol 158 (2) ◽  
pp. 306-308
Author(s):  
MARCELO DA COSTA SOUZA ◽  
MARLI PIRES MORIM

Zootaxa ◽  
2017 ◽  
Vol 4254 (3) ◽  
pp. 357 ◽  
Author(s):  
DANIEL CHIRIVI JOYA

We present the description of Phrynus calypso sp. nov. from Trinidad and Tobago, and Venezuela This species is very similar to Phrynus pulchripes (Pocock), however after examining Colombian specimens of P. pulchripes (ca. type locality), many differences were found. Characters commonly used in diagnosis of Phrynus species are variable and make identification difficult. Differences in a few structures, like pedipalpal spines, could not be enough to provide a useful diagnosis.  It is necessary to account for variation of similar species in conjunction, and select non overlapping groups of characters. Observations in the variation in both species are presented, pointing out sources of confusion, and suggesting alternative characters to support diagnoses. At the moment, details about variation in many species in Phrynus, like that of P. pulchripes, are poorly known, and for this reason a redescription is provided. 


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