John Alexander Pulgarin Diaz

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• Researcher
• Researcher at University of Eastern Finland

Disturbances caused by the European spruce bark beetle (SBB; Ips typographus L.) on Norway spruce (Picea abies (L.) H. Karst.), have increased immensely across Central and Northern Europe, and are expected to increase further as a result of climate change. While this trend has been noted in Finland, so far limited research has been published. To su...

The Eucalyptus snout beetles, which belong to the Gonipterus scutellatus species complex, cause heavy damage to Eucalyptus spp. worldwide. The species was reported in Antioquia, Colombia for the first time in 2016, threatening more than 115,000 ha of planted Eucalyptus spp. Elsewhere, its damage has been controlled using Anaphes spp. as classical b...

Conclusions • Soil type, fertility class, development class, mean DBH and mean age are critical for SBB damage. • There is a clear linear relationship between the distance from clear-cuts to the closest SBBD stands and the number of SBBD. • If the number of clear-cuts increases, it is expected that new SBB damage will appear in the nearby area.

Lucilia eximia (Wiedemann, 1819) (Diptera: Calliphoridae) is a blowfly with medical and forensic importance that shows genetic and color variation, however, these variations have not justified the description of new species. But in forensic entomology an accurate identification of species and subpopulations is crucial. We explored the genetic varia...

The mahogany shoot borer (Hypsipyla grandella) attacks different Meliaceae species and impedes its plantation. Its biology is poorly known, but some results show a preference for Cedrela odorata L. over Swietenia macrophylla King, which could generate intraspecific variations. We studied the effect of these hosts on H. grandella right-forewing size...

Field studies were carried out in the three main productive nuclei: Montes de María (MM), Sierra Nevada de Santa Marta (SNSM) and Serranía del Perijá (SP), in order to determine the richness and composition of phytophagous insects associated with avocado plantations for the Colombian Caribbean region. The field studies were carried out in 78 farms,...

The European spruce bark beetle, Ips typographus (Coleoptera: Curculionidae), is the most important forest insect pest in Central and Northern Europe as it causes destructive damage in Norway spruce (Picea abies). As a result of ongoing climate change, its damages have increased and shifted northwards, affecting wood production and other ecosystem...

Climate change affects distributions of forest insects in North Europe. There is relatively good observation record of moths done by Finnish Lepidopterologists. In addition, several good quality distribution maps have been published in Finland. Currently this information is available as open species data on the internet provided by Natural History...

Con el objetivo de determinar la riqueza y composición de los insectos fitófagos asociados a plantaciones de aguacate para la región Caribe colombiana, se realizaron estudios de campo en los tres principales núcleos productivos: Montes de María (MM), Sierra Nevada de Santa Marta (SNSM) y Serranía del Perijá (SP). El trabajo se realizó en 78 fincas,...

Climate change has assisted the northward range expansion of various forest insect pests, increasing the risk of forest damage in Northern Europe. The pine beauty moth, Panolis flammea, is common in European pine stands with cyclical outbreaks that have damaged thousands of hectares. In the 1970s, its Finnish northern distribution limit was reporte...

ABSTRACT Fique (Furcraea spp., Agavaceae) is source of natural fiber commuly used for packing in Colombia. However, the crop faces phytosanitary limitations that affect production, with scarce information published in this regard. In an ex situ biological collection of Furcraea spp. larvae of an unidentified species of Pyralidae were found feeding...

ABSTRACT. Zethus schadei Bohart & Stange is reported for the first time for Colombia and as a natural enemy of Hypsipyla grandella. The specimens were obtained from terminal shoots of Cedrela odorata L. (Meliaceae) in a plantation in the municipality of San Roque, Antioquia, Colombia.

RESUMEN Actualmente las plantaciones realizadas en el país con especies nativas no han producido los resultados esperados, ya que por falta de investigación se han encontrado diferentes factores limitantes. Para el Cedrela odorata en e y ste estudio, la principal limitación se llama Swietenia macrophylla Hypsipyla grandella, , especies de interés u...

Symbioses among ambrosia beetles and fungi are one of most common and successful relationships in any forest ecosystem. Ambrosia beetle–fungus interactions with trees are typically benign, and only dead or stressed trees are susceptible to be colonized. In recent decades, many of these relationships transformed into unexpectedly destructive tree di...

The genus Mesostenus Gravenhorst has sixty one described species worldwide. A new species, Mesostenus hypsipylaphagous Herrera-Florez, sp. n. is described and its host given. This is the first record of Mesostenus from Colombia.

Scolytinae (Coleoptera: Curculionidae) asociados a las maderas de Jacaranda copaia (Bignoniaceae) y Cedrela odorata (Meliaceae) en condiciones reales de aprovechamiento John Alexander Pulgarín Díaz. Ingeniero Forestal. MSc. Entomología. Secretaría de Agricultura y Desarrollo Rural Antioquia. Colombia. jalexanderpulgarin@gmail.com. Resumen Se caract...

Se caracterizó la diversidad de Scolytinae, una de las plagas forestales más importantes en un bosque muy húmedo neotropical capturados con trampas cebadas con etanol y metanol, y que perforan madera de C. odorata y J. copaia, en tres ecosistemas y tres tiempos de exposición de las maderas. La diversidad se comparó entre ecosistemas, maderas y tiem...

Cedrela odorata and Jacaranda copaia are important species in the neotropics for protection and production. Xylophagous insects that attack the mentioned woods, have been little studied. Scolytinae that bore the mentioned woods diversity's was characterized and compared among species, season and ecosystem; similarity between forest species was stud...

Poster

Scolytinae’s diversity was characterized, they are xylophagous insects poorly studied in Colombia, which attack and bore the wood of two important species for forest protection and timber production: Cedrela odorata and Jacaranda copaia, from a very humid forest of the Neotropics. The study was conducted in three ecosystems and three times of expos...

Poster

Poster

Presentation

http://www.metropol.gov.co/Residuos/Documents/Cartillas/CARTILLA_TALA_PODA_Y_ROCERIA.pdf

Xylophagous and xylomicetophagous insects can cause serious deterioration of timber. The insects attacking the thirteen most traded timbers in the Valle de Aburrá were identified and their presence was confirmed. Insects causing most of the damage were determined and the wood tissue most attac ked was characterized. Comments on the handling and sto...

Abstract of the paper Scolytinae es un grupo altamente diverso en hábitos, comportamiento y asociaciones con otros organismos. Xyleborus es el género más grande de la tribu Xyleborina de esta subfamilia, reportado atacando especies de importancia forestal en todo el mundo. Se conoce poco sobre su distribución geográfica y los factores que la determ...

Abstract of the paper La albura es ideal para inmunizar y pintar, pero posee menor resistencia natural y mayor permeabilidad que el duramen. Para favorecer la proporción de duramen en las plantaciones se han identificado diferentes factores que los influencian en árboles y rodales. Su separación mejoraría los ingresos económicos en los procesos de...

Abstract of the paper La explotación maderera está entre las principales causas de deforestación. Cerca del 60% del material aprovechado se pierde a causa de organismos xilófagos, los que se deben conocer para controlar. Se identificaron los insectos que atacan las 13 maderas más comercializadas en el Valle de Aburrá; cuáles insectos generan los ma...

Few studies have been conducted on colony composition and nest architecture of Pseudomyrmex species or even in general for the family Formicidae. P. termitarius is one of the two species in this genus that nests in the soil. It has been the subject of few ecological and ethological investigations. In this investigation, the colony composition and n...