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The geographic distribution of Costa Rican velvet worms (Onychophora: Peripatidae)
(Revista de Biologia Tropical vol.64 no.4 1401-1414 2016, 2016-06-06)
Velvet worms, “peripatus” or onychophorans, are “living fossils” that were geographically widespread in Cambrian seas but now occur exclusively on terrestrial habitats. The only extant species studied in some detail are ...
A new giant species of placented worm and the mechanism by which onychophorans weave their nets (Onychophora: Peripatidae)
(Universidad de Costa Rica, 2010)
Onychophorans, or velvet worms, are poorly known and rare animals. Here we report the discovery of a new species that is also the largest onychophoran found so far, a 22cm long female from the Caribbean coastal forest of ...
A New Hybrid of Serpocaulon (Polypodiaceae) from Costa Rica
(Bio One Research Evolved, 2013)
A new hybrid Serpocaulon 3 sessilipinnum A. Rojas & J.M. Chaves is described. The
new taxon has characters intermediate between S. fraxinifolium (Jacq.) A.R. Sm. and S. ptilorhizon
(Christ) A.R. Sm., which are related ...
A new species of Seticeros from Costa Rica (Coleoptera, Cerambycidae, Prioninae)
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2011)
A new species of Seticeros Perger & Santos-Silva, 2010 (Prioninae: Callipogonini) from San Isidro del General, San José, Costa Rica is described and illustrated. A key to the species of Seticeros is added.
Camelobaetidius guaycara, a new species of Baetidae (Ephemeroptera) from Costa Rica, Central America
(Magnolia Press, 2018-06-14)
The nymphs of a new species of Camelobaetidius (Ephemeroptera: Baetidae) possibly related to the South American species of this genus were found on the Atlantic and Pacific slopes of Costa Rica. Among other characteristics ...
Los onicóforos, fósiles caminantes
(Consejo Nacional de Ciencia y Tecnología de El Salvador, 2012-08-23)
Los onicóforos son considerados
“fósiles vivientes” porque durante
más de 500 millones de años su
morfología ha cambiado muy poco
y han mantenido un estadio evoluti vo aparentemente intermedio entre
los anélidos ...
Five New Species of Diplazium Sw. (Athyriaceae) from Nicaragua, Costa Rica and Colombia
(Universidad Nacional (Costa Rica), 2018-04-13)
Five new species are described in the genus Diplazium Sw. from Nicaragua,
Costa Rica and Colombia, as results of studies in the Neotropical ferns. The
new species are Diplazium chirripoense A. Rojas, Diplazium cornutum ...
Four New Species and Additional Distributions of Elaphoglossum Section Elaphoglossum (Dryopteridaceae) from the Neotropics
(Universidad Nacional (Costa Rica), 2017-05-19)
Four new species of Elaphoglossum sect. Elaphoglossum are described: E.
amparoanum A. Rojas, E. chocoense A. Rojas, E. fayorum A. Rojas and E.
luciae A. Rojas. The first species is related to E. variolatum Mickel, but ...
Unexplored Character Diversity in Onychophora (Velvet Worms): A Comparative Study of Three Peripatid Species
(Sars International Centre for Marine Molecular Biology, Norway, 2012-12-17)
Low character variation among onychophoran species has been an obstacle for taxonomic and phylogenetic studies in the past, however we have identified a number of new and informative characters using morphological, molecular, ...
Three New Species and New Records of Dennstaedtia Bernh. from Mesoamerica
(Universidad Nacional, Costa Rica, 2018)
Navarrete & Øllgaard [1] indicated the presence of a “C” group within
Dennstaedtia Bernh. that contains D. obtusifolia (Willd.) T. Moore, which is
the type material of the genus Patania C. Presl and indicated that it ...