Revista Colombiana de Entomología <p>Revista Colombiana de Entomología (RCdE) is an open access journal, published online with a continuous periodicity (semiannual). RCdE publishes original research articles, essays, scientific notes, book reviews and obituaries related to the area of insect science in English and Spanish. It also publishes review articles on general entomological topics, called "thematic reviews", however, these are only done by request of the Editorial Committee.</p> <p>The journal focuses on papers in the area of entomology and related fields such as biodiversity, ecology, agriculture, human, veterinary and forensic medicine, physiology, systematics and taxonomy, biogeography and genetics that fall within the following topics:</p> <ul> <li>Agricultural entomology.</li> <li>Ecology and behavior.</li> <li>Insect growth and development.</li> <li>Insect anatomy and insect physiology.</li> <li>Systematic entomology.</li> <li>Medical, veterinary and forensic entomology.</li> <li>Microbiology and molecular entomology<strong>.</strong></li> </ul> <p>For details see Instructions for authors.</p> <p>Submitted articles should not be previously published and are subject to double-blind peer review. The journal requires payment from authors at the time of publication. Fees vary according to the number of published pages (with a special discount fee for SOCOLEN members).</p> Sociedad Colombiana de Entomología - SOCOLEN y Universidad del Valle - Univalle en-US Revista Colombiana de Entomología 0120-0488 <p>Authors retain the copyright on their work and are responsible for the ideas expressed in them. Once a manuscript is approved for publication, authors are asked for a publication license for the term of legal protection, for all territories that allows the use, dissemination and disclosure of the same.</p> Floral characteristics in five landraces accessions of pumpkin (Cucurbita argyrosperma) related to the attraction of insect visitors <p><span style="font-weight: 400;">Pollination is extremely important for agriculture, with insects being the main pollinators. Plants have developed attraction strategies in their flowers to ensure visits from pollinators; therefore, knowing the floral characteristics that influence visits to crops could lead to improvements in yield. The floral attributes of five landraces accessions of pumpkin (</span><em><span style="font-weight: 400;">Cucurbita</span></em> <em><span style="font-weight: 400;">argyrosperma</span></em><span style="font-weight: 400;">) were compared: RRS004, RRS006, RRS005, RRS008 and RRS010. The experiment was carried out in a family orchard in Baca, Yucatan, Mexico. Evaluations were carried out in the period of maximum flowering, the size and area of the corolla, the height of the flower, floral display, volume and concentration of sugar in nectar, pollen production and its viability were recorded; and also, floral visitors. The results showed that there are differences in terms of floral traits between evaluated accessions, as well as the pollen and nectar floral area was associated with floral visitors. Similarly, a greater number of illegitimate visits was observed compared to legitimate visits, of which all were identified as chrysomelids (</span><em><span style="font-weight: 400;">Acalymma</span></em><span style="font-weight: 400;"> sp.), bees (</span><em><span style="font-weight: 400;">Partamona</span></em><span style="font-weight: 400;"> sp.), drosophilids (</span><em><span style="font-weight: 400;">Drosophila</span></em><span style="font-weight: 400;"> sp.), thrips (</span><em><span style="font-weight: 400;">Frankliniella</span></em><span style="font-weight: 400;"> sp.), ants (</span><em><span style="font-weight: 400;">Solenopsis</span></em><span style="font-weight: 400;"> sp.) and wasps (</span><em><span style="font-weight: 400;">Polybia</span></em><span style="font-weight: 400;"> sp.). Our study shows that the variation recorded in floral traits between accessions impacts the attraction of visiting insects, which demonstrates an important intraspecific variation in </span><em><span style="font-weight: 400;">Cucurbita</span></em><span style="font-weight: 400;"> sp.</span></p> Maria Luisa Balam-Pech Horacio Salomón Ballina-Gómez Kati Medina-Dzul Esau Ruiz-Sánchez Alejandra González-Moreno Copyright (c) 2023 Maria Luisa Balam-Pech, Horacio Salomón Ballina-Gómez, Kati Medina-Dzul, Esau Ruiz-Sánchez, Alejandra González-Moreno 2023-07-11 2023-07-11 49 2 10.25100/socolen.v49i2.12316 Insecticidal and antifeedant bioactivities of Melaleuca alternifolia essential oil on Ascia monuste orseis <p>This study evaluated the bioactive effects of <em>Melaleuca </em><em>alternifolia </em>essential oil on the behavior and mortality of <em>Ascia monuste orseis</em> caterpillars. The experiment was conducted at the laboratory under controlled conditions using a completely randomized design with six treatments, represented by <em>A. monuste orseis </em>caterpillars fed collard leaves treated with 0 (control), 5, 10, 20, 30, or 40 mg mL<sup>−1</sup> essential oil. Each treatment consisted of five replicates of four third-instar caterpillars. Mean daily intake of collard leaves, feces production, mortality, and behavioral changes were assessed for 15 days after the beginning of the experiment. Data on leaf intake and feces production were subjected to analysis of variance by the <em>F</em>-test; when significant differences were found, data were subjected to regression analysis. Corrected mortality rate was calculated and subjected to analysis of variance by the <em>F</em>-test followed by Tukey’s test at the 5% significance level for comparison of means. The median lethal dose (LD<sub>50</sub>) was also evaluated. Two very clear feeding behaviors were observed, one in caterpillars exposed to essential oil concentrations of 5, 10, and 20 mg mL<sup>−1</sup>, which showed little difference in feed intake from the control, and the other in caterpillars exposed to the highest concentrations (30 and 40 mg mL<sup>−1</sup>), which showed a decrease of 76 to 93% in feed intake compared with the control. Lower leaf intake resulted in a decrease in feces production, and the negative effects increased linearly with essential oil concentration. The mortality curve showed a linear and positive response to essential oil concentration, reaching 100% in insects exposed to the highest concentrations. The LD<sub>50</sub> was 13.93 mg mL<sup>−1</sup>.</p> Paulo Henrique Martins Da Silva Evandro Pereira Prado Pedro José Ferreira-Filho João Paulo Francisco Erci Marcos Del Quiqui Camila Silva Julio César Guerreiro Copyright (c) 2023 Paulo Henrique Martins Da Silva, Evandro Pereira Prado, Pedro José Ferreira-Filho , João Paulo Francisco, Erci Marcos Del Quiqui, Camila Silva, Julio César Guerreiro 2023-07-28 2023-07-28 49 2 10.25100/socolen.v49i2.12391 Population fluctuation of Scolytinae (Coleoptera: Curculionidae) in avocado (Persea americana Mill.) orchards in Michoacán, México <p><span style="font-weight: 400;">This study aimed to determine the population fluctuation of Scolytinae (Coleoptera: Curculionidae) in orchards of avocado </span><em><span style="font-weight: 400;">Persea americana</span></em><span style="font-weight: 400;"> var. Hass, located in the municipalities of Nuevo San Juan Parangaricutiro (SJ), Uruapan (UR), and Ziracuaretiro (ZR), Michoacán, México. The study was carried out from July 2016 to June 2018. The insects were captured using α-copaene, ethanol and querciverol + ethanol lures, which were placed in bottle traps. The population fluctuation of Scolytinae, during both years and sampling sites, presented its maximum peak during July and August. In ZR, the highest abundance of Scolytinae were recorded during July and October in the 2016-2017 cycle, and during September and October in the 2017-2018 cycle. The population abundance of Scolytinae was higher during the 2016-2017 cycle in SJ and UR, and in ZR the highest population abundance corresponded to the 2017-2018 cycle. The most abundant species of Scolytinae in SJ were </span><em><span style="font-weight: 400;">Microcorthylus invalidus</span></em><span style="font-weight: 400;"> (43.28 %), </span><em><span style="font-weight: 400;">Araptus schwarzi</span></em><span style="font-weight: 400;"> (28.68 %) and </span><em><span style="font-weight: 400;">Corthylus detrimentosus</span></em><span style="font-weight: 400;"> (23.02 %), in UR, were </span><em><span style="font-weight: 400;">A. schwarzi</span></em><span style="font-weight: 400;"> (41.40 %) and </span><em><span style="font-weight: 400;">M. invalidus</span></em><span style="font-weight: 400;"> (14.75 %) and ZR were </span><em><span style="font-weight: 400;">Premnobius cavipennis</span></em><span style="font-weight: 400;"> (26.04 %), </span><em><span style="font-weight: 400;">Hypothenemus crudiae</span></em><span style="font-weight: 400;"> (17.75 %) and </span><em><span style="font-weight: 400;">Corthylus flagellifer</span></em><span style="font-weight: 400;"> (16.17%). At the three sites, the maximum population coincided with the periods with higher rainfall and higher relative humidity percentages, conditions that favored a greater availability of food resources at the sites, which were used by the species for their establishment.</span></p> Martha Olivia Lázaro-Dzul Armando Equihua-Martínez Jesús Romero-Nápoles Héctor González-Hernández Dionicio Alvarado-Rosales Alvaro Castañeda-Vildózola Javier Suárez Espinosa Copyright (c) 2023 Martha Olivia Lázaro-Dzul, Armando Equihua-Martínez, Jesús Romero-Nápoles, Héctor González-Hernández, Dionicio Alvarado-Rosales, Alvaro Castañeda-Vildózola, Javier Suárez Espinosa 2023-09-01 2023-09-01 49 2 10.25100/socolen.v49i2.12526 Synergists for agave weevil Scyphophorus acupunctatus (Coleoptera: Dryophthoridae) trapping on Agave angustifolia (Asparagaceae), in Guerrero, Mexico <p><em><span style="font-weight: 400;">Scyphophorus acupunctatus</span></em><span style="font-weight: 400;"> (Coleoptera: Dryophthoridae) attacks several species of native agaves and it is the most important insect pest of cultivated agaves in Mexico. The management of this insect is difficult due to its feeding habits on agave stems and leaves. Recently, a trapping system based on a synthetic aggregation pheromone and food bait has been developed to monitor and capture adult </span><em><span style="font-weight: 400;">S. acupunctatus</span></em><span style="font-weight: 400;">. However, it is important to know some alternatives that can synergize the response of </span><em><span style="font-weight: 400;">S. acupunctatus</span></em><span style="font-weight: 400;"> to the synthetic pheromone. In this study, two consecutive field trials were carried out where diverse synergists were evaluated in traps placed in a plantation of </span><em><span style="font-weight: 400;">Agave angustifolia</span></em><span style="font-weight: 400;"> (Asparagaceae), in Quetzalapa, Guerrero, Mexico. The synergists evaluated were the following: plant tissue of </span><em><span style="font-weight: 400;">A. angustifolia</span></em><span style="font-weight: 400;">, ripe fruits of pineapple (</span><em><span style="font-weight: 400;">Ananas comosus</span></em><span style="font-weight: 400;">), and banana (</span><em><span style="font-weight: 400;">Musa paradisiaca</span></em><span style="font-weight: 400;">) as well a synthetic synergist (Sinergium®). In all the experiments, a completely randomized design was used, with four repetitions for each treatment. The synergists evaluated had no effect on the captures of </span><em><span style="font-weight: 400;">S. acupunctatus</span></em><span style="font-weight: 400;">. The capture averages of </span><em><span style="font-weight: 400;">S. acupunctatus</span></em><span style="font-weight: 400;">/trap/day in the experiments did not differ, which is why it is suggested that in plantations with initial or low infestations (up to 5 weevils) it is not required to add synergists, while at high densities (more than 5 weevils) it is advisable to use a plant or synthetic synergist (Sinergium®) to make synergy with the synthetic pheromone. In addition, more female (192) than male (137) were captured in traps, which may impact future pest density populations of the weevil, plant health, and agave producer economics.</span></p> Daniel Cuevas-López Elías Hernández-Castro Teolincacihuatl Romero-Rosales Héctor Ramón Segura-Pacheco Pedro Figueroa-Castro Héctor Gonzalez-Hernádez Copyright (c) 2023 Daniel Cuevas-López, Elías Hernández-Castro, Teolincacihuatl Romero-Rosales, Héctor Ramón Segura-Pacheco, Pedro Figueroa-Castro, Héctor Gonzalez-Hernádez 2023-08-16 2023-08-16 49 2 10.25100/socolen.v49i2.12547