Examinando por Materia "Neotropic"

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    A Un caso de ginandromorfismo en Amblyomma mixtum (Acari, Ixodidae).
    (Universidad del Valle, 2017-12-30) Rivera Páez, Fredy A.; Labruna, Marcelo B.; Martins, Thiago F.; Rodrigues Sampieri, Bruno; Camargo Mathias, María I.; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle
    Ginandromorfismo es una condición donde un organismo exhibe simultáneamente características morfológicas de macho y hembra. En Colombia el taxón Amblyomma cajennense está representado por las especies Amblyomma patinoi y Amblyomma mixtum. En septiembre de 2014 en la Orinoquía colombiana, de infecciones naturales de bovinos y equinos, se colectaron y determinaron garrapatas adultas. En una infección natural de bovino se describió un ginandromorfo clasificado morfológicamente como A. mixtum. Éste es el primer registro en la literatura de un ginandromorfo A. mixtum, y la primera descripción de un ginandromorfo para una especie de garrapata en Colombia.
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    Diversity of epigeal coleopteran in hualo forests and insigne pine plantations in central Chile.
    (Universidad del Valle, 2021-02-03) Huerta Fuentes, Amanda Isabel; Muñoz, Francisco; Curkovic, Tomislav; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    Hualo forests (Nothofagus glauca) endemic from Chile have been impacted by anthropic processes such as substitution by exotic plantations of ensigned pine (Pinus radiata). The diversity of epigeous Coleoptera in Hualo forests, highly sensitive to changes, has been scarcely documented in Chile. It was evaluated the seasonal diversity of epigeous Coleoptera in three habitats (hualo forests, pine plantations, and mixed formations of pine plantations and hualo forests) in the area of Constitución, central Chile. During the spring and summer were established three random linear transects of 100 m in three mature stands of each habitat, where 10 pitfall traps were installed every 10 m. For each habitat, the composition, abundance, and richness of epigeous beetles were estimated. The diversity of species was calculated per season using the Shannon-Wiener (H’), Pielou (J’), Chao 2, and Jacknife 1 indexes. Besides, rarefaction curves were built to estimate the expected richness. Nineteen Coleoptera native species belonging to 11 families were detected. In spring, the relative abundances of Coleoptera were significantly higher in pine plantations, followed by mixed formations and hualo forests. In summer, although the abundance was reduced, the predominance in the pine plantations remained stable. The relative richness in pine plantations and hualo forests was similar and superior to mixed formations in summer. However, it was inferred from the rarefaction curves, that only the sampling effort in summer was appropriated. The H’ index was higher in mixed formations in spring, and in N. glauca forests in summer, coinciding with the highest J’. The results suggest that maintaining pine plantations, favors the conservation of epigeous Coleoptera, acting as reservoirs of biodiversity, possibly due to the greater tree cover and understory, in this particular habitat.
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    First record of fruit piercing moths (Lepidoptera: Erebidae) in Colombia.
    (Universidad del Valle, 2018-07-08) Montes Rodríguez, José Mauricio; Rojas, Hernán Darío; Vaca Bohórquez, Néstor Cesay; Universidad del Valle; Sociedad Colombiana de Entomología - Socolen; Montoya Lerma, James
    During the harvest season in June and July of 2016, there was an unusual drop of tangerine and orange fruits that caused heavy losses in several fruit producing municipalities in the department of Santander, in northeastern Colombia. In some of these fruits, punctures were found, from which soft rotting originated; this damage was unknown to farmers in the region. Nocturnal sampling allowed the detection of two species of fruit piercing moths, Eudocima apta and E. procus, puncturing the fruits. Moth damage changed from being high to disappearing within about two weeks. This is the first report of fruit piercing moths in orange and tangerine crops from Colombia. Simultaneously, 60 km east of the citrus crops, moths were also detected in the Berlin paramo in the municipality of Silos between 3,000 and 3,100 masl, far from any fruit orchard and from the host plants registered for E. apta, suggesting that this was a migratory move.
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    Five new records of dragonflies (odonatan : anisoptera) from Putumayo department (Colombia)
    (2015-04-27) Palacino Rodriguez, Fredy
    Five new records of dragonflies for Putumayo department are reported, and information about of the number of Odonata species by department is provided. RESUMEN Cinco nuevos registros de lib´elulas para el departamento de Putumayo son reportados, e informaci´on acerca del n´umero de especies de Odonata por departamento es proporcionada.
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    Nesting habitats and rates of cell parasitism in some bee species of the genera ancyloscelis, centris and euglossa (Hymenoptera: Apidae) from Colombia
    (2011-10-06) Gonzalez, Victor H.; Ospina, Mónica; Palacios, Elina; Trujillo, Edwin
    We describe a dense nest aggregation of Ancyloscelis aff. apiformis, two nests of Centris flavifrons, and six nests of Euglossa. We found a nest of E. analis built inside a cavity of a living tree, an aerial nest of E. cybelia attached under a leaf of a palm tree and four nests of E. nigropilosa associated with timber buildings and abandoned nests of carpenter bees (Xylocopa sp.). We report for the first time wasps of the family Eurytomidae (Hymenoptera: Chalcidoidea) and a cuckoo bee, Coelioxys (Rhinocoelioxys) sp. (Hymenoptera: Megachilidae), attacking the brood cells of E. cybelia and E. nigropilosa. We also briefly discuss the variation found in the nest structure of C. flavifrons; unlike those nests studied in Costa Rica and northeastern Brazil, the nests in Colombia were shallow (~12 cm) and consisted of a main tunnel with three short branches, each one ending in a single cell. Further data from other localities are needed to detect other variations in the nesting biology and if they are correlated with the morphological variation exhibited by this species or with local differences in parasite pressure.
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    New records of Cephaloleia (Coleoptera: Chrysomelidae) pest of oil palm in Colombia.
    (Universidad del Valle, 2020-07-09) Barrios Trilleras, Carlos Enrique; Castillo Villarraga, Natalia Julieth; Bustillo Pardey, Alex Enrique; Staines, Charles L.; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    The taxonomic identity of Cephaloleia vagelineata was confirmed and the species Cephaloleia depressa is reported for the first time in Colombia and causing damage in oil palm plantations. Adult morphological descriptions of both species are provided to facilitate their identification.
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    New records of fruit flies (Diptera: Tephritidae) in the Alagoas State, Brazil.
    (Universidad del Valle, 2019-08-30) Silva Da Costa, Simone; Dos Santos, Jakeline Maria; Forti Broglio, Sônia Maria; Silva Dias Pini, Nivia Da; Gómez Torres, Mariuxi; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    The aim of this study was to determine the diversity of fruit flies, their hosts and parasitoids in the State of Alagoas, Brazil. A total of 17,394 specimens of frugivore insects where recorded, of which 14,993 (86.2 %) belonged to the genus Anastrepha (7,224 females and 7,769 males) and 2,401 (13.8 %) belonged to Ceratitis (1,196 females and 1,205 males). In Maceió, a new species of Anastrepha, which so far has been referred to as “morpho-species of Anastrepha sp.”, has been collected. Besides showing the highest number of females collected during this study, Anastrepha obliqua was associated with the highest number of host species (eight species). Parasitoid emergence was associated with only 9 of the 19 fruit species infested with fruit flies. From all pupae of Anastrepha obtained in this study (26,724), 6,125 parasitoid specimens have emerged, with 5,870 corresponding to Braconidae, 169 to Pteromalidae, 78 to Figitidae and 8 to Torymidae. In this study the emergence of parasitoids from puparia of Ceratitis was not recorded.