Rodulfo Ospina-Torres

Rodulfo Ospina-Torres
National University of Colombia | UNAL · Departamento de Biología (Bogotá)

Professor

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67
Publications
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Introduction
biodiversity of neotropical bees, insect biodiversity of high mountain andean ecosystems

Publications

Publications (67)
Article
Full-text available
Liodessus picinus sp. nov. is described from the Páramo de Sumapaz near Bogota D.C. at 3,500 m above sea level. The species can be distinguished from the other Colombian Liodessus species by its dark colora-tion, discontinuous habitus, shiny surface of the pronotum and elytron, presence of a distinct occipital line, distinct basal pronotal striae,...
Article
The diverse bee genus Psaenythia Gerstaecker (Panurginae, Protandrenini), hitherto known from central and southern South America, is recorded from northern South America for the first time. Two new species are described: Psaenythia diceratops , sp. n., from northeastern Colombia, and P . guaricoensis , sp. n., from central Venezuela. The males of P...
Article
Full-text available
Plants and pollinators might respond differently to changes in climate, and thus plant-pollinator relationships are vulnerable to spatial, temporal, morphological and recognition mismatches. Although the effects of climate change on pollinators and pollination services are expected to be greater in the tropics than in other latitudes, these effects...
Conference Paper
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Con el propósito de establecer los atributos biológicos y ecológicos del ensamble de escarabajos de la familia Melolonthidae en un robledal aledaño al PNR Páramo de Santurbán, intervenido con obras de exploración aurífera, se recolectaron durante un año de muestreo, 1.152 escarabajos adultos (26 especies, incluyendo una nueva especie) utilizando tr...
Article
Mutualistic interactions between bees and flowering plants have been widely recognized as one of the most important for the maintenance of these communities throughout ecosystems. Consequently, understanding how these interactions occur is highly important, especially in seasonal dry tropical forest (SDTF), one of the most endangered ecosystems in...
Article
Full-text available
Stingless bees (Apidae: Meliponini) are culturally and economically important bees and they repre­sent a major component of the Colombian melittofauna. However, the bee fauna of Colombia is still in early stages of exploration and species identification is often difficult or impossible. We revised the species of the cleptobiotic stingless bee genus...
Article
Accessing the past: use of collection specimens as sources of genetic information for the genus Bombus (Hymenoptera: Apidae) in Colombia. Introduction: The use of museum specimens as a source of genetic information to develop studies that resolve taxonomic, ecological, demographic, and evolutionary questions at various temporal and geographic scale...
Article
We here describe Liodessus lacunaviridis sp. n. (Coleoptera: Dytiscidae, Bidessini), collected from small mossy puddles at the edge of the Laguna Verde, Boyaca, Colombia. Within Liodessus Guignot, 1939 the new species is well characterized by its darker coloration, more elongate oval habitus, and the shape of the median lobe in ventral view, which...
Article
Nannotrigona Cockerell is one of the few stingless bee genera widely distributed and commonly encountered throughout the Neotropical region. Some species are abundant and managed in meliponiculture. However, the identity and number of species occurring in some countries or areas is almost entirely unknown. Herein we reviewed the species of Nannotri...
Article
Full-text available
The Colombian species of the genus Rhantus are reviewed. Rhantus bogotensis sp. 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 high...
Article
Stingless bees (Apinae: Corbiculata: Meliponini) are biologically and culturally important pollinators within the tropical and subtropical areas of the world. However, limited information is available for the majority of the species. Biological and systematic data are presented for a new species of Trigonisca Moure, from the arid region of La Guaji...
Article
Full-text available
The Lepidoptera taxocenoses excluding butterflies of two Páramo localities near Bogotá were studied using light traps and day samplings. The spectrum of families, encountered in November 2016, is presented with some notes on the faunal composition.
Article
The Colombian species of the diving beetle genus Liodessus Guignot, 1939 Guignot, F. (1939), ‘Contribution à l’étude des Bidessus’, Bulletin de la Société d’Étude des Sciences Naturelles de Vaucluse, 10(4), 51–61. [Google Scholar] are revised. Liodessus bogotensis Guignot, 1953 Guignot, F. (1953), ‘Trente-neuvième note sur les hydrocanthares’, Revu...
Preprint
Full-text available
The Colombian species of the diving beetle genus Liodessus Guignot, 1939 are revised. Liodessus bogotensis Guignot, 1953 is re-described. Three higher altitude species are new to science: Liodessus azufralis sp. n., L. quillacinga sp. n. and L. quimbaya sp. n. We also introduce two new subspecies, L. quillacinga cochaensis ssp. n. and L. quillacing...
Article
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We record for the first time for Colombia Megachile ( Pseudomegachile ) lanata (Fabricius, 1775), a bee species from Southeast Asia. This is the first record of an adventive bee species for the country besides Apis mellifera Linnaeus, 1758, the European honey bee. Megachile lanata appears to have arrived to the Caribbean coast of Colombia nearly ha...
Article
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Investigation of the Trichoptera fauna from the small river La Vieja on the city border of Bogotá yielded a total of 17 species. Nine new species of Trichoptera are described from La Vieja: Atopsyche viejae spec. nov., A. flavoantennata spec. nov., Metrichia trisignata spec. nov., M. longiphallata spec. nov., Smicridea colombosaucia spec. nov., Xip...
Article
Lipurometriocnemus. bogotensis sp. n. and Antillocladius laviejae sp. n., two species collected at the “La Vieja” creek, near Bogotá, Colombia; 2666 m, are described and depicted as male imagines. L. bogotensis sp. n. can be separated from other Lipurometriocnemus species by lacking acrosticals setae on thorax, thus an emendation of the genus conce...
Article
Full-text available
The contribution of wild pollinators to food production has recently been assessed for many crops, although it remains unclear for several tropical crops. Granadilla (Passiflora ligularis Juss), a crop native to the tropical Andes, is one such crop where a gap exists regarding comprehensive knowledge about its pollination system. In a field experim...
Chapter
Full-text available
Colombia es el país que posee la mayor diversidad de pasifloráceas del mundo. Estudios recientes indican que existen en Colombia 170 especies que se distribuyen prin-cipalmente en la región andina (Ocampo et al., 2007; 2010). Dentro de esta gran varie-dad, se estima que al menos 81 de ellas llegan a tener potencial como frutos comestibles (Coppens...
Article
Full-text available
Este documento forma parte de la tesis doctoral del primer autor, denominada: Escarabajos (Coleoptera: Melolonthidae) aso-ciados a un robledal del Parque Natural Regional Páramo de Santurbán, Santander (Colombia). Resumen: Teniendo en cuenta lo destacado y al mismo tiempo lo poco explorado del rol ecológico de los escarabajos fitófagos (Coleoptera:...
Article
Full-text available
Este documento forma parte de la tesis doctoral del primer autor, denominada: Escarabajos (Coleoptera: Melolonthidae) aso-ciados a un robledal del Parque Natural Regional Páramo de Santurbán, Santander (Colombia). Resumen: Teniendo en cuenta lo destacado y al mismo tiempo lo poco explorado del rol ecológico de los escarabajos fitófagos (Coleoptera:...
Article
This paper presents a method for establishing segment scale typology for the Andean rivers of Colombia. The method incorporates physical and ecological aspects and combines inferences of structural stability and metabolic activity. The classification of river segments is based on the assignment of two non-dimensional descriptors. The first descript...
Chapter
Full-text available
La importancia del servicio de polinización por animales para la provisión de alimen-tos a nivel mundial se reconoció desde hace más de una década, con la disminución en las poblaciones de polinizadores silvestres y manejados (Allen-Wardell et al., 1998). Hoy conocemos que polinizadores como abejas, aves y murciélagos inciden sobre el 35% de la pro...
Chapter
Full-text available
INTroDUCCIóN La importancia del servicio de polinización por animales para la provisión de alimen-tos a nivel mundial se reconoció desde hace más de una década, con la disminución en las poblaciones de polinizadores silvestres y manejados (Allen-Wardell et al., 1998). Hoy conocemos que polinizadores como abejas, aves y murciélagos inciden sobre el...
Chapter
Full-text available
INTroDUCCIóN La fauna de polinizadores en el Neotrópico está compuesta por un sinnúmero de especies que por su particular biología y comportamiento juegan un papel decisivo en la manutención de la diversidad genética de las plantas que visitan (Proctor et al., 1996; Kay, 2009). Esta diversidad está representada principalmente por abejas entre las c...
Article
Full-text available
Resumen: Se presenta un inventario preliminar de los escarabajos de la familia Melolonthidae de un bosque secundario de roble del municipio de California, Santander, Colombia. Los muestreos se realizaron durante 12 meses, utilizando trampas de luz negra, carpotrampas y colecta manual; se hicieron análisis de la eficiencia del muestreo, de diversida...
Article
Full-text available
Orchid bees are important keystone pollinators from the Neotropics. With the aim to study the relationships between orchid bees and their nectar and aromatic host species, we made systematic samplings of males across two conservation areas in the biogeographic Chocó Region of Colombia. We used chemical baits to collect 352 male bees during five mon...
Article
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Las abejas de las orquídeas son uno de los principales grupos de polinizadores con distribución exclusivamente Neotropical. Con el fin de documentar las relaciones de estas abejas con sus plantas fuente de néctar y sustancias aromáticas, realizamos muestreos sistemáticos de 352 machos durante cinco meses usando cebos químicos para atraerlos en dos...
Book
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This book presents the details of floral biology, pollinators and pollination of three promising fruit trees from some regions of Colombia: Agraz (Vaccinium meridionale), Chamba (Campomanesia lineatifolia) and Cholupa, Passiflora maliformis).
Article
Full-text available
Abstract: Key to chironomid pupal exuviae (Diptera: Chironomidae) of tropical high Andean streams. The Chironomidae is a cosmopolitan family of Nematoceran flies with more than 20 000 species described. However the diversity of genera and species of the family in the Andean region beyond the 2 000m.a.s.l are scarcely known. We conducted faunal surv...
Article
Full-text available
Key to chironomid pupal exuviae (Diptera: Chironomidae) of tropical high Andean streams. The Chironomidae is a cosmopolitan family of Nematoceran flies with more than 20 000 species described. However the diversity of genera and species of the family in the Andean region beyond the 2 000m.a.s.l are scarcely known. We conducted faunal surveys and bi...
Article
Full-text available
A pesar del uso extendido de las comunidades de macroinvertebrados dulceacuícolas en estudios básicos y aplicados de ecología acuática, es poco lo que se conoce para la Isla de Providencia, más aun cuando la biota de las islas es de interés por sus posibles relaciones con el continente y con islas cercanas. El presente estudio caracterizó la compos...
Article
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During the months from March to June 2008, four sampling in three sites of Gaira river was made: upper part (1700 masl), middle (900 masl) and lower (50 masl). The density and biomass of macroinvertebrates during a diary cycle were evaluated. Diptera (15.15 Ind. m3), Ephemeroptera (8.46 Ind. m3) and Trichoptera (2.70 Ind. m3) were the taxon that pr...
Article
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RESUMEN En el presente estudio, se realizan medidas de la actividad metabólica del sustrato sedimentos (SED) en un gradiente altitudinal de un río tropical de montaña (Sierra Nevada de Santa Marta-Colombia) con el fin de establecer su relación con variables físico-químicas, hidrológicas e hidroclimáticas a lo largo de la cuenca durante eventos de s...
Article
Full-text available
RESUMEN El propósito de este trabajo fue evaluar la variación espacial de la deriva de macroinvertebrados en términos de biomasa y densidad derivante en dos sitios con diferente grado de perturbación (cambios de caudal y arrastre de sedimentos en uno de ellos) ubicados en la cuenca baja del río Gaira (Santa Marta, Colombia). Se realizaron tres mues...
Article
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The purpose of this paper is to study in two crops of purple passionfruit Passiflora edulis f. edulis harvested at different altitudes (2225 m.a.s.l. and 1657 m.a.s.l.) in the municipality of Buenavista - Boyacá, located in the eastern Mountain range of Colombia, in order to familiarize with visitors and pollinators. This study reveals that in both...
Article
Full-text available
The purpose of this paper is to study in two crops of purple passionfruit Passiflora edulis f. edulis harvested at different altitudes (2225 m.a.s.l. and 1657 m.a.s.l.) in the municipality of Buenavista - Boyacá, located in the eastern Mountain range of Colombia, in order to familiarize with visitors and pollinators. This study reveals that in both...
Article
Full-text available
Functional feeding groups of macroinvertebrates in Gaira river, Colombia. Tropical rivers are frequently described on their biodiversity but few studies have considered the ecological value of this richness in their food webs. We determined the trophic structure of aquatic macroinvertebrate communities (expressed in the richness and abundance of ta...
Article
Full-text available
The floral and reproductive biology of Passiflora edulis f. edulis was studied in crops located at the Cordillera Oriental in the Colombian Andes (Buenavista, Boyacá). The floral anthesis occurred between 6 and 8 hrs, and the average floral longevity was of 25 hrs. Four phenological flower phases were recognized: (1) Female with herkogamy, (2) Homo...
Article
Full-text available
Tropical rivers are frequently described on their biodiversity but few studies have considered the ecological value of this richness in their food webs. We determined the trophic structure of aquatic macroinvertebrate communities (expressed in the richness and abundance of taxa and biomass proportions of different functional feeding groups) at the...
Article
Full-text available
Study of the mechanisms regulating species richness in aquatic systems is essential for understanding the functioning and conservation of these environments, especially in the Neotropics, given the lack of relevant information. In 15 lakes in three geographical regions in South America, we studied the effects of lake size, the concentration of chlo...
Article
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The present study investigated the chironomid fauna from three stretches of the river Magdalena basin: the mouth lagoons at Santa Marta, the floodplain lakes of the middle sector at Mompox and the river Bogotá up to its headwater. The biological communities of the Ciénaga de Santa Marta have been studied already for some decades, owing to the sever...
Article
Full-text available
Quantity and variation of inputs -lateral and vertical- and transport of particulate organic matter (POM) were estimated over a five month- period in a section of a tropical mountain stream, in the eastern hills of Bogotá, Colombia, with emphasis on the effects of precipitation and flow over inputs and transport of POM. Vertical inputs of coarse PO...
Article
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The variation of drift density of aquatic macroinvertebrates and biomass contribution of different immature and imagos stages were estimate on a stream segment of a first order tropical stream in Eastern hills of Bogotá – Colombia, during high and low rainfall periods. A total of 96 taxa were collected; Simulium was the most abundant with 194 indiv...
Article
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Retention percentage of three fractions of coarse particulate organic matter (MOPG) and discharge effect over retention of particulate organic matter (MOP) were studied during five months in three sectors of a tropical mountain stream, at Eastern hills of Bogotá Colombia. The tropical condition of the system, showed a pattern of constant discharge...
Article
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The present contribution describes the variation of aquatic macroinvertebrates drift and coarse particulate organic matter (MOPG) during a daily cycle in two stream sections of the western mountain range in Nariño, Colombia. A total of 1012 individuals were collected (total abundance). The greater abundance corresponded to Ephemeroptera with 422 in...
Article
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Presentado 22 de agosto de 2005, aceptado 7 de febrero de 2006, correcciones 14 de agosto de 2006. RESUMEN La presente contribución describe la variación de la deriva de macroinvertebrados acuáticos y de materia orgánica particulada gruesa (MOPG) durante un ciclo diario en dos tramos de un río de la vertiente occidental de la cordillera occidental...
Article
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Genital characters remain unexplored in Euglossa and they could be of great value in recognizing species and understanding the phylogeny of the group as in other bee genera. We examined the external morphology of the male gonostylus in 49 species of Euglossa belonging to five subgenera and eight species groups. Unlike the other euglossine genera, t...
Article
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A new species of orchid bee in the genus Euglossa is here described. Euglossa natesi n. sp. Parra- H, Ospina-Torres & Ramírez has been collected from the Pacific Andean foothills of Colombia and Ecuador. Euglossa natesi n. sp. has no obvious close relatives, and while most morphological characters suggest that it belongs to the subgenus Glossura, a...
Article
Full-text available
A new species of orchid bee in the genus Euglossa is here described. Euglossa natesi n. sp. ParraH, Ospina-Torres & Ramírez has been collected from the Pacific Andean foothills of Colombia and Ecuador. Euglossa natesi n. sp. has no obvious close relatives, and while most morphological characters suggest that it belongs to the subgenus Glossura, a f...
Article
Full-text available
An application of Neuro-Adaptative Fuzzy Logic (LDN-A) for calculating of the water quality at the Plain of Bogotá, Colombia is presented. Fifty five sites at eleven watersheds in the Plain of Bogotá are used. The results with LDN-A are confronted with values of the Cfq index, to prove the degree of reliability, being observed a significant regress...
Article
Full-text available
This study presents a key to pupal exuviae of the tribe Tanytarsini from the Neotropical region. Included are the 32 species from the Neotropics presently known as pupae, as well as 80 previously unpublished morphotypes from the Brazilian states Rio Grande do Sul and Amazonas. Detailed figures and distributional data are given for all morphotypes....
Article
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Se presenta una implementación de la metodología de redes neuronales (RN) comoherramienta para la estimación de la calidad del agua en la cuenca alta y media del ríoBogotá, Colombia. Los datos usados provienen de 55 sitios correspondientes aonce cuencas de la sabana de Bogotá. Los resultados obtenidos con la aplicaciónde la RN fueron comparados con...
Article
An application of fuzzy logic (LD) is present in order to calculate the biologic water quality in the Plain of Bogotá, Colombia. Due to the interactions between aquatic organisms and physical and chemiscal variables are a non-linear mathematic prob- lem of great complexity, powerful methods for the analysis of such models are needed. Fuzzy logic of...
Article
Full-text available
Although the morphological characters of the male genital capsule and the associated sternites of the five genera of euglossine bees is generally well known, the male genital morphology of many species of the genus Euglossa and Eulaema has not been described before. The genital characters can be useful for the determination of species and for the e...
Article
Although the morphological characters of the male genital capsule and the associated stemites of the five genera of euglossine bees is generally well known, the male genital morphology of many species of the genus Euglossa and Eulaema has not been described before. The genital characters can be useful for the determination of species and for the ex...
Article
Full-text available
Resumen Se describe Eulaema sororia, una especie cercana a El. meriana, aparentemente restringi-da al área del Chocó biogeográfico de Colombia y la zona adyacente de Ecuador, donde probablemente se desarrolló en un refugio de bosque en el Pleistoceno. Palabras clave: Eulaema, Hymenoptera,Apidae, Taxonomía. Abstract Eulaema sorotie is described. It...
Article
Full-text available
Resumen Se describe y se presenta la diagnosis comparativa de una nueva especie del género Eulaema Lep., posiblemente endémica del área biogeográfica del Chocó. El. chocoana pre-senta un patrón de coloración constante que coincide con el patrón tipo bombiformis de El.meriana pero es claramente distinguible de esta y otras especies relacionadas por...

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Projects

Projects (7)
Project
Establish possible scenarios of chemical contamination by heavy metals, pesticides and micro plastics, in native and non-native bees and their apiarian products in urban and rural environments.
Project
Through melissopalynological analysis, we determine the botanical origin of bee products (honey and pollen) and evaluate the dynamics on bee-plant interactions in different regions of Colombia. At the same time, we seek to improve the palynological collection of the Laboratorio de Investigaciones en Abejas LABUN - Universidad Nacional de Colombia, and to publish pollen catalogs that may serve as reference for further melissopalynological research.
Project
As part of the Labun efforts to work with some of passion flowers and their related bee fauna, the main purpose of this work was to stablish a floral cycle and the main visitors of banana passion fruit in a cultivated area.