Examinando por Materia "Coleoptera"

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Impacto de dos tipos de trampas y feromonas de agregación en colectas de insectos de la familia Cerambycidae: Resultados preliminares.
(Sociedad Entomológica del Perú, 2021-11) Bendezú, Gerson; Machacca, Teofila; Sanabria, Joel; Masgo, Cristian; Gonzales, Wilma; Carrera, Jhems; Vilca, Karolyn; Paredes Espinosa, Richard; Egoávil Jump, Giannfranco; Allison, Jeremy Dean; Aguirre Gil, Oniel Jeremías
De acuerdo a los resultados obtenidos, se concluye que la mayor cantidad de especímenes se colecta con trampas cebadas de la feromona individual syn-2,3-hexadiol y la mezcla binaria syn -2.3-hexadiol+fuscumol acetato en trampas de cuatro paneles y la mayor cantidad de especies de Cerambycidae colectados pertenecen a la especie M. andesiana.
Nuevos datos para el conocimiento de la distribución del género Mimodromius Chaudoir, 1873 (Coleoptera: Carabidae) en el altiplano peruano
(Arquivos Entomolóxicos Galegos, 2016-10-19) Delgado Mamani, Pedro Ernesto; Ruiz Tapiador, Ildefonso
[ES] Se aportan nuevos datos para Perú del género Mimodromius Chaudoir, 1873 (Coleoptera: Carabidae). Se incluye el primer registro de Mimodromius aptinoides Brullé, 1837 y nuevas localidades de Mimodromius altus Liebke, 1941. Se revisan los datos disponibles sobre la distribución de las especies de este género en el país, así como los datos conocidos acerca de su biología.--- [EN] New data on the genus Mimodromius Chaudoir, 1873 (Coleoptera: Carabidae) for Peru are reported. The first record of Mimodromius aptinoides Brullé, 1837 and new localities of Mimodromius altus Liebke, 1941 are included. Available data on the distribution of the species of this genus in the country are reviewed, as well as the data known about their biology.
Nuevos registros de Oxelytrum anticola (Guérin-Méneville, 1855) (Coleoptera, Silphidae) para Perú
(Arquivos Entomolóxicos Galegos, 2014-03-11) Pérez Valcárcel, Javier; Delgado Mamani, Pedro Ernesto; Ruiz Tapiador, Ildefonso; Del Estal, Pedro
[ES] Se aportan nuevos registros de Oxelytrum anticola (Guérin-Méneville, 1855) (Coleoptera, Silphidae) para Perú. Se revisan también los datos disponibles sobre su biología y distribución.--- [EN] New records of Oxelytrum anticola (Guérin-Méneville, 1855) from Peru are reported. Available data on its biology and distribution are also revised.
Responses of Megacyllene andesiana and Oreodera bituberculata (Coleoptera: Cerambycidae) to anti-2,3-hexanediol, fuscumol, and fuscumol acetate in Peru
(Cambridge University Press, 2024-09-25) Aguirre Gil, Oniel Jeremías; Paredes Espinosa, Richard; Egoávil Jump, Giannfranco; Allison, Jeremy Dean
Management of phytosanitary and biosecurity risks associated with the Cerambycidae focuses on prevention and early detection. Semiochemical-baited traps are an important component of these management efforts. Cerambycid pheromones are often screened in field trials to develop inventories of which species can be surveyed with which semiochemicals. We report field trials of two types of intercept traps (four- and three-sided panel traps) baited with known Cerambycidae pheromones aimed to capture Peruvian fauna. Intercept traps were baited with anti-2,3-hexanediol, fuscumol, and fuscumol acetate alone and in binary and ternary blends. The most frequently captured species was Megacyllene andesiana (Casey) (Coleoptera: Cerambycidae) (n = 268), followed by Oreodera bituberculata Bates (Coleoptera: Cerambycidae) (n = 59), Discopus eques Bates (Coleoptera: Cerambycidae) (n = 37), and Aegomorphus longitarsis (Bates) (Coleoptera: Cerambycidae) (n = 31). Trap type did not affect capture rates. Male and female M. andesiana were attracted by anti-2,3-hexanediol. The addition of fuscumol, fuscumol acetate, or the combination of fuscumol and fuscumol acetate reduced male M. andesiana captures, whereas the addition of fuscumol and the combination of fuscumol and fuscumol acetate reduced the response of female M. andesiana. Male O. bituberculata were attracted to traps baited with fuscumol, and this response was reduced by the addition of fuscumol acetate, whether or not anti-2,3-hexanediol was present.
Variations on a theme: two structural motifs create species-specific pheromone channels for multiple species of South American cerambycid beetles
(MDPI, 2020-04-02) Silva, Weliton D.; Hanks, Lawrence M.; Alvarez, Jean Carlos S.; Madalon, Fernando Z.; Bento, José Maurício S.; Bello, Jan E.; Millar, Jocelyn G.
We describe the identification, synthesis, and field-testing of aggregation-sex pheromones, or likely pheromone candidates, of seven species of South American cerambycid beetles in the subfamily Cerambycinae, of the tribes Eburiini and Neoibidionini. Analyses of extracts of volatiles released by adult males revealed that Eburodacrys dubitata White produce 11-methyltridecanal, whereas the males of Eburodacrys assimilis Gounelle, Eburodacrys flexuosa Gounelle, and Eburodacrys lenkoi Napp and Martins produce blends of this compound, along with its analog 10-methyldodecanal. In contrast, males of Compsibidion graphicum (Thomson) and Compsibidion sommeri (Thomson) produce blends of 10-methyldodecanal and its corresponding alcohol 10-methyldodecanol. The results from field bioassays with synthetic compounds showed that each species was specifically attracted to traps containing their reconstructed pheromone blend. However, E. assimilis was not trapped, possibly due to inhibition by non-natural enantiomers in the racemic test compounds. During the trials for the Compsibidion species, adults of another cerambycid species, Tetraopidion mucoriferum (Thomson), were captured in significant numbers in traps baited with 10-methyldodecanol, suggesting that this compound is a pheromone component for this species. This study demonstrates another case of conservation of pheromone structures within South American cerambycid species. It also highlights how blends of closely related structures, differing only in chain length or functional group, make the evolution of species-specific pheromone channels possible.