Listar Ciencias básicas por título
Mostrando ítems 61-80 de 3121
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A new methodology for the synthesis of δ-substituted α,β-unsaturated δ-lactones
(2020)A new protocol for the synthesis of δ-substituted-α,β-unsaturated δ-lactones was developed. Selective reaction of 1,3-dilithiopropyne with ketones, followed by addition of ethyl chloroformate formed ethyl 5-[(ethoxycarbo ... -
A new Muricea species (Cnidaria, Anthozoa, Octocorallia) from the eastern tropical Pacific
(2016)The genus Muricea is considered abundant and widely distributed along the eastern Pacific. Its occurrence in shallow waters has been recognised; however species from deeper than 30 m have been rarely recorded. During the ... -
A new Muscarella from Tapanti National Park, Costa Rica
(2021)A new species of Muscarella from Costa Rica, is described and illustrated. Muscarella tapantiensis most resembles M. coeloglossa but differs in the longer pedicels (3-5 vs. 1-2 mm), the shorter (2.5-2.8 vs. 3.75 mm), connate ... -
A new Ophidion (Orchidaceae, Pleurothallidinae) from the Pacific lowlands of Colombia and the unresolved phylogenetic position of Phloeophila s.l.
(2023)A species new to science of a miniature orchid, endemic to the humid Pacific lowland, Municipality of Buenaventura (Valle del Cauca, Colombia), is described and illustrated. Ophidion erectilabrum sp. nov. is morphologically ... -
A New Parasitic Chytrid, Staurastromyces oculus (Rhizophydiales, Staurastromycetaceae fam. nov.), Infecting the Freshwater Desmid Staurastrum sp.
(2017-08)Chytrids are a diverse group of ubiquitous true zoosporic fungi. The recent molecular discovery of a large diversity of undescribed chytrids has raised awareness on their important, but so far understudied ecological role ... -
A new Platystele (Orchidaceae, Pleurothallidinae) from the western mountains of Colombia
(2018)A new species of miniature orchid, Platystele riograndense, endemic to the Pacific slope of the western Cordillera, Munici- pality of Restrepo, Valle del Cauca, Colombia, is described and illustrated. Platystele riograndense ... -
A New Pleurothallis from Colombia, with a Note on Ancipitia and Colombiana (Orchidaceae: Pleurothallidinae)
(2015)A new species of Pleurothallis from Valle del Cauca, Colombia, is described and illustrated. Pleurothallis ottocari is similar to the Ecuadorian P. scoparum, but differs in the widely elliptic leaf, the smaller flowers, ... -
A new species and a new record of Malaxis (Malaxidinae) from Costa Rica
(2022-04-25)We describe and illustrate a new species and a new record of Malaxis from the lower montane and montane forests of Costa Rica. Taxonomic descriptions, illustrations, distribution maps, and conservation assessments are ... -
A new species of Acianthera (Orchidaceae, Pleurothallidinae) from the Cordillera Central of Colombia
(2020-11-27)Acianthera Scheidweiler (1842: 292), a genus historically placed under the synonymy of Pleurothallis Brown (1813: 211), was reinstated by Pridgeon & Chase (2001) and redefined on the basis of molecular studies by Pridgeon ... -
A new species of Anacroneuria Klapálek 1909 (Plecoptera: Perlidae) and notes on the altitudinal distribution of the genus in Costa Rica
(2015)Anacroneuria is the most widespread genus of Perlidae throughout the Neotropical Region and 30 species have been reported from Costa Rica. In this paper, we describe and illustrate a new species from a high elevation cloud ... -
A new species of Andinia subgen. Brachycladium (Orchidaceae: Pleurothallidinae) from Colombia
(2017-08-18)A new species of Andinia belonging to A. subgenus Brachycladium from the eastern Andes of southern Colombia is described and illustrated. Andinia obesa is related to the A. nummularia species complex, characterized by the ... -
A new species of Camaridium (Orchidaceae: Maxillariinae) from the cloud forests of Colombia
(2015)Camaridium perezianum is described from the remnant cloud forests of Valle del Cauca Department (western range of the Andes, southwestern Colombia). This new species is most similar to C. nutantiflorum, from which it differs ... -
A new species of Eurystyles (Orchidaceae: Spiranthinae) from Costa Rica
(2020)Eurystyles comprises about 23 species ranging from Mexico to northernArgentina. Six species are recognized in Mexico and Central America and three in Costa Rica. A new species, named E. uxoris, is here described and ... -
A New Species of Gorgonian Octocoral from the Mesophotic Zone off the Central Coast of California, Eastern Pacific with a Key to Related Regional Taxa (Anthozoa, Octocorallia, Alcyonacea)
(2019-05-15)Recent offshore benthic surveys utilizing Remotely Operated Vehicles in the National Marine Sanctuaries along the California coastline under the auspices of the National Oceanic and Atmospheric Administration and the Ocean ... -
A new species of Lepanthes (Orchidaceae: Pleurothallidinae) from Colombia with a large and protruding column
(2017)A new species of Lepanthes from the Western Cordillera of the Colombian Andes, characterized by similar triangular sepals with a large and protruding column, is described and illustrated. The new species is similar to ... -
A new species of Leptoderma Vaillant, 1886 (Osmeriformes: Alepocephalidae) from the Pacific coast of Central America
(2016)A new species of Leptoderma Vaillant, 1886 is described from a single specimen trawled at 1368–1406 m depth off El Salvador, Central America, tropical eastern Pacific. Leptoderma ospesca n. sp. can be readily distinguished ... -
A new species of Pabstiella (Pleurothallidinae, Orchidaceae) from Ecuador
(2021)Pabstiella elegans is newly described based on cultivated material originally collected near Chaucha in Ecuador. It belongs to the group of small, creeping species of Pabstiella section Mentosae and differs from its closest ... -
A new species of Phragmipedium (Orchidaceae: Cypripedioideae) from Peru
(2019)A new species of Phragmipedium section Lorifolia, P. cabrejosii, is described and illustrated from Peru, and its affinities are discussed. It is mainly compared with P. caricinum, from which it is distinguished by the ... -
A new species of Rhopalosiphum (Hemiptera, Aphididae) on Chusquea tomentosa (Poaceae, Bambusoideae) from Costa Rica
(2012-01)The new species Rhopalosiphum chusqueae Pérez Hidalgo & Villalobos Muller, is described from apterous viviparous females caught on Chusquea tomentosa in Cerro de la Muerte (Costa Rica). The identity of the species is ... -
A new species of Stelis (Orchidaceae: Pleurothallidinae) from Peru
(2016-06)Stelis peruviana from the cloud forest of Yanatile, Cusco, Peru is described and illustrated. This new species is most similar to Stelis spathuliformis, from which it differs by its yellow flowers, shorter lanceolate sepals, ...