Time For Colombia Research Articles

A glimpse into the diversity of Colombian Acanthaceae

SummaryA short visit to four Colombian herbaria in 2022 is highlighted as an example of modern-day herbarium plant hunting which resulted in the discovery of 14 new species: Aphelandra guacharorum J.R.I.Wood, A. montis-tusae J.R.I.Wood & Hoyos-Gómez, Justicia betancurii J.R.I.Wood, J. chloroleuca J.R.I.Wood, J. cristalina J.R.I.Wood & Hoyos-Gómez, J. daironcardenasii J.R.I.Wood & Hoyos-Gómez, J. ipanorensis J.R.I.Wood, J. lutescens J.R.I.Wood & Hoyos-Gómez, J. macuirensis J.R.I.Wood, J. perijaensis J.R.I.Wood, J. reniformis J.R.I.Wood, J. rheophytica J.R.I.Wood & Hoyos-Gómez J. santanderana J.R.I.Wood & Hoyos-Gómez and Ruellia rheophytica J.R.I.Wood & Hoyos-Gómez. These are described and illustrated with line drawings. Additionally, a full description and line drawings of two poorly known species, Justicia hochreutineri J.F.Macbr. and J. trianae (Leonard) J.R.I.Wood are provided. Notes are provided on 21 other species drawing attention to new records for Colombia, rediscoveries and taxonomic issues. Justicia hochreutineri J.F.Macbr., J. pilosa (Ruiz ex Nees) Lindau, J. zamorensis Wassh. and Stenostephanus lasiostachyus Nees are recorded for the first time for Colombia. Justicia pampolystachys Leonard is treated as a synonym of J. hyperdasya Leonard. Poikilacanthus moritzianus (Nees) Lindau is shown to be restricted to Venezuela. Adhatoda pilosa Ruiz ex Nees is lectotypified. Attention is drawn to the number of rheophytes in Colombian Acanthaceae and to the importance of the Río Claro and Río Samaná Norte area of Antioquia as a centre of plant diversity.

Estudo taxonômico e de ultraestrutura dos gêneros Strombomonas and Trachelomonas (Euglenophyta) da Colombia

ABSTRACT A floristic and ultrastructural study on loricated Euglenophyta was made in several freshwater bodies from the Amazonian and Caribbean regions of Colombia. A total of 114 taxa were recorded, 93 belonged to the genus Trachelomonas Ehr., and 21 to Strombomonas Defl. From the total taxa determined, 73 were recorded for the first time for Colombia, 19 for the Amazonian and 52 for the Caribbean region. Besides 43 taxa were examined by scanning electron microscopy (SEM) and details of its ultrastructure are illustrated.

First record of Gargaphia paula Drake, 1939 (Hemiptera, Tingidae) from Colombia, with a new host plant and an updated checklist of Gargaphia species in the country

Gargaphia paula Drake, 1939 is recorded for the first time for Colombia in two extreme localities, one in the northern region of the country and the other in the southeast. Moreover, it was found on Calopogonium mucunoides Desv. (Fabaceae), a new host plant recorded for the species.

A NEW SPECIES OF ZEPHYRANTHES HERB. S. L. (AMARYLLIDACEAE, HIPPEASTREAE), WITH NOTES ON THE GENUS IN COLOMBIA

A new species of Zephyranthes (Amaryllidaceae), growing in semi-arid areas of the High Plain of Bogotá, Colombia, is described and illustrated. We give notes on five other species present in Colombia: Z. albiella Traub, Z. carinata Herb., Z. puertoricensis Traub., Z. robusta (Sweet) Baker y Z. rosea (Spreng.) Lindl. The last four were registered for the first time for Colombia. We include a key for the identification of the species.

New records of Pimelodella (Siluriformes, Heptapteridae) from Colombia for the Amazon River basin, and redescription of P. serrata.

We recorded Pimelodella bockmanni and P. serrata for the first time for Colombia, based on specimens collected in tributaries from the main channel of the Amazonas River, in the so-called Trapecio Amazónico, in the southernmost region of this country. We also present morphometric, meristic, and osteological data of the examined material, and provide a complementary morphological description of the poorly known P. serrata, a species known only from the Madeira River drainage in Bolivia and Brazil.

First record of Cryptophion Viereck, 1913 (Ichneumonidae: Campopleginae) from Colombia, with description of a new species

The genus Cryptophion Viereck, 1913 includes eight Neotropical species distributed in Central and South America. Herein the genus is recorded for the first time in Colombia and a new species, Cryptophion flavonigrovittatus Santos, Onody & Palacio sp. nov. is described. In addition, Cryptophion spinozai and Cryptophion guilhermoi are reported for the first time for Colombia. An identification key is also provided for all species of the genus.

<strong>A taxonomic synopsis and morphological characterization of <em>Myoxanthus</em> (Orchidaceae: Pleurothallidinae)</strong>

The taxonomic history, general description and distribution are provided for Myoxanthus. Morphological characterization of the vegetative and reproductive organs is illustrated with photographs. A list of the 52 accepted species includes synonyms and distribution; most are illustrated with a flower photograph. Lectotypes for M. frutex, M. lonchophyllus, M. neillii, M. pulvinatus, M. punctatus, and M. serripetalus are designated, and a neotype is selected for M. melittanthus. Myoxanthus parvilabius is reported for the first time for Colombia. The circumscription of M. lonchophyllus is reevaluated, Pleurothallis pennellia is recognized as a distinct taxon and transferred to Myoxanthus, and Myoxanthus panamense, a new species related to M. scandens, is described from Pamana.

FIRST RECORD OF Brachymeria podagrica (HYMENOPTERA: CHALCIDIDAE) AS PARASITOID OF Peckia collusor (DIPTERA: SARCOPHAGIDAE)

In this work, the wasp Brachymeria podagrica is recorded for the first time for Colombia, a solitary parasitoid of larvae of the Peckia collusor fly. Third instar larvae of P. collusor were exposed to outdoor ambient conditions for 6 hours in the garden of the Tecnológico de Antioquia (Medellín, Colombia). 29 B. podagrica adults were obtained from the host pupae. Prevalence of parasitism was 14.5 %.

Primer registro de Agave sisalana (Agavaceae, Asparagales) para Colombia

Agave sisalana Perrine, a native species from Yucatán Peninsula (Mexico), is recorded for the first time for Colombia. It is morphologically related to Agave fourcroydes Lem. and Agave pax Giraldo-Cañas, but clearly differs from it in various vegetative and reproductive characteristics, which are given. Thus, a total of ten species of Agave are currently known in South America, seven are native and three are naturalized. A key for the South American species is included.

A new species of Stizocera Audinet-Serville, 1834 (Coleoptera: Cerambycidae) from Colombia with an updated key to species of the genus and new geographical records in Cerambycinae

A new species of Stizocera (Cerambycinae, Elaphidiini) from Colombia is described and illustrated: Stizocera ruthveronae sp. nov., and an updated key to species of the genus is presented. Moreover, nine species of longhorn beetles of Cerambycinae belonging to Callichromatini, Eburiini, Elaphidiini, Hexoplonini, Neoibidionini, Obriini are reported for the first time for Colombia.

Redescription of Acropsis Grant, 1958 (Orthoptera: Tettigoniidae: Phaneropterinae: Microcentrini) and description of new species from Brazilian and Colombian Amazon Rainforest.

Acropsis Grant, 1958 is a monotypic genus with records only for Peru (type locality). Acropsis is being redescribed, including the Acropsis tectiformis species and two new species: Acropsis solimoesensis sp. nov. and Acropsis julianae sp. nov. The male internal genitalia and the stridulatory file morphology for the genus is being described for the first time. Furthermore, the genus is registered for the first time for Colombia (Caquetá) and Brazil (Acre and Amazonas) and additionally notes on the habitat are made.

New records of ants (Hymenoptera: Formicidae) for Colombia

Abstract Even though Colombia has high levels of ant species richness in the Neotropical region, this richness continues to increase. New records of the ant subfamilies Amblyoponinae, Dolichoderinae, Dorylinae, Myrmicinae, and Ponerinae are presented. Two species of Fulakora, two species of Azteca, one species of Cylindromyrmex, 25 species of Myrmicinae belonging to 12 genera (Acanthognathus, Basiceros, Daceton, Eurhopalothrix, Hylomyrma, Mycetomoellerius, Mycetophylax, Mycocepurus, Octostruma, Pheidole, Rogeria, and Talaridris), and one species of Leptogenys are registered for the first time for Colombia. Five species are new records for South America. For each species, the geographical distance of the record closest to the Colombian locality is offered. Several factors, such as access to previously unexplored conserved areas, sampling techniques that cover heterogeneous microhabitats such as leaf litter, and many more taxonomic researches have allowed the knowledge of ant fauna in Colombia to continue growing.

<i>Puccinia fumosa</i> (Pucciniales) y su hospedante <i>Loeselia glandulosa</i> (Polemoniaceae), nuevos registros para Colombia y Suramérica

Se registra por primera vez para Colombia la roya Puccinia fumosa parasitando a Loeselia glandulosa perteneciente a la familia Polemoniaceae. Es el primer registro de esta familia botánica y del género Loeselia siendo parasitados por Pucciniales en Suramérica. Se describen por primera vez las mesosporas de Puccinia fumosa.

New species and new geographical records in South American Piezocerini (Coleoptera: Cerambycidae) with revised keys to species of Alienosternus and Hemilissa

AbstractSix new species of Piezocerini (Coleoptera: Cerambycidae: Cerambycinae) are described: Alienosternus sanjacintero, Hemilissa bifasciata, Hemilissa erikae, Hemilissa claudiae, and Migorybia santossilvai from Colombia and Alienosternus wappesi from Bolivia. The genus Alienosternus Martins, 1976 is recorded for the first time for Colombia and Bolivia, and the genus Migorybia Martins, 1985 is recorded for the first time for Colombia. The geographical distribution of three species is expanded, and keys to species of Alienosternus and Hemilissa Pascoe, 1858 are provided.

Checklist of the false scorpions (Arachnida: Pseudoscorpiones) of Colombia, with new records and a key to the identification of the families.

Colombia is a mega-biodiverse country and rich in ecosystems as different as the Amazon and the Andes. Much is known of the vertebrate fauna, however there is still an information-gap for many arthropod groups including the arachnids. Here, we compile all the information available for pseudoscorpions (Arachnida: Pseudoscorpiones) recorded from Colombia and include several new records and distribution extensions. For each described species, we present information on taxonomic history, type localities, global and local distributions, repository of Colombian specimens, and collection numbers when available. We document 12 families, 45 genera and 65 species of pseudoscorpions for Colombia and most species belong to the families Chernetidae (27 species) and Olpiidae (8 species). We record Beierolpium venezuelense Heurtault, 1982, Geogarypus amazonicus Mahnert, 1979, Sathrochthonius venezuelanus Muchmore, 1989, and Semeiochernes armiger (Balzan, 1892) for the first time for Colombia. We further extend the known ranges of Parachernes melonopygus Beier, 1959 and Paratemnoides nidificator (Balzan, 1888). The data suggest that the Caribbean region of Colombia has the highest number of records. Total numbers are not complete and many other new pseudoscorpion species are expected.

A new variety of Schizachyrium (Poaceae: Andropogoneae) from South America, with notes on the infraspecific taxa of Schizachyrium tenerum

A new variety of Schizachyrium tenerum from South America is described and illustrated. The new taxon (S. tenerum var. muticum) differs from the other varieties of the species (S. tenerum var. tenerum and S. tenerum var. hirtiglume) mainly by the absence of awns in the sessile spikelets, which is a very unusual character in the genus. The new variety occurs in Venezuela, Bolivia, and Brazil. A taxonomic discussion and an identification key for the infraspecific taxa of S. tenerum are also presented, as well as illustrations of all varieties of the species. Additionally, Schizachyrium tenerum var. hirtiglume is reported for the first time for Colombia.

The first Paratropididae (Araneae, Mygalomorphae) from Colombia: new genus, species and records.

The family of mygalomorph spiders Paratropididae Simon, 1889 is here reported for the first time for Colombia, where it is represented by three genera (Anisaspis, Paratropis, Stormtropisgen. n.) and eight species. One genus, Stormtropis, and six species constitute new taxa that are here diagnosed, described and illustrated. The geographical distribution of Paratropispapilligera FO Pickard-Cambridge, 1896 and Paratropiselicioi Dupérré, 2015 are also redescribed and expanded on the basis of new material examined. The diagnosis of the subfamily Paratropidinae, Paratropis Simon, 1889 and Anisaspis Simon, 1892 are emended including the variations of the new species. Likewise, a geographic distribution map for the entire family and a taxonomic key for the males of Paratropidinae are included. Other biogeographic, morphological, and taxonomic aspects are discussed.

Presence and distribution of Leptodactylus guianensis Heyer and de Sá, 2011 in Colombia: comparisons with other species in the L. latrans group

ABSTRACTLeptodactylus guianensis is reported for the first time for Colombia along with a distributional map of the species. The species is the fifth species of the L. latrans species group documented in the country. Males possess a single, conical and slightly chisel-shaped thumb spine; only three species in the group have a single thumb spine. In collections, specimens of L. guianensis are misidentified as L. macrosternum, L. latrans or L. bolivianus. We provide morphological, colouration and habitat descriptions for where the species occurs in Colombia.

First report of Zethus schadei (Hymenoptera: Vespidae) as natural enemy of Hypsipyla grandella Zeller (Lepidoptera: Pyralidae) from Colombia

Se reporta por primera vez para Colombia a Zethus schadei Bohart & Stange, y como enemigo natural de Hypsipyla grandella. Los especímenes fueron obtenidos de brotes terminales de Cedrela odorata L. (Meliaceae) en una plantación del municipio de San Roque, Antioquia, Colombia.

A comparative analysis of the effectiveness of corporate bankruptcy prediction models based on financial ratios: Evidence from Colombia

Logit and discriminant analyses have been used for corporate bankruptcy prediction in several studies since the last century. In recent years there have been dozens of studies comparing the several models available, including the ones mentioned above and also probit, artificial neural networks, support vector machines, among others. For the first time for Colombia, this paper presents a comparative analysis of the effectiveness of several models predicting corporate bankruptcy. Such models have previously been mostly used in relation to European and North American markets, whereas here they are applied to the financial ratios of three firms located in Colombia. The main objective is to corroborate the validity of these models in terms of their ability to predict firm failure in the Latin American context, specifically for two bankrupt Colombian firms and one healthy one. The analysis is conducted using bankruptcy forecasting models widely proposed in the literature and used systematically in developed countries: the multiple discriminant analysis Z-Altman model, Korol’s two-function model and Prusak’s P2 model. In addition, the logit and decision tree models developed by T. Korol are tested.