Reintroduction and dispersal of the livestock and wildlife pest, southern cattle fever tick, rhipicephalus (Boophilus) microplus (Canestrini), along the U.S.Mexico border in the southernmost counties of Cameron and Willacy has been attributed mostly to nilgai antelope, Boselaphus tragocamelus (Pallas), and to a lesser extent, white-tailed deer, Odocoileus virginianus (Zimmerman). Nilgai are competent hosts of r. microplus, have large home ranges, and are distributed from southern Texas into northeastern Mexico where r. microplus, a vector of bovine babesiosis, is endemic. The study documents movement of nilgai and white-tailed deer through gaps in game fencing previously built to redirect movements of the endangered ocelot, Leopardus pardalis (L.), to wildlife crossings. Game fencing limits movement of nilgai and white-tailed deer and thus reduces the spread of cattle fever ticks. Additional game fencing is proposed to limit movement of tick-infested nilgai, white-tailed deer, and further redirect ocelots to crossings to avoid mortality on roads. In other parts of Cameron and Willacy counties where road mortality to ocelots is not an issue, game fencing is designed with large openings to block nilgai but allow free movement for endangered feline species. This research demonstrates how efforts to protect livestock from an exotic pest can also merge with goals of protecting endangered species in the same environment.

Aphids have rapid intrinsic rates of increase because clonal females can reproduce parthenogenetically. Studies to investigate host plant resistance often measure life history characteristics of an individual on the test cultivar. However, aphid lifespan, fecundity, and intrinsic rate of increase could be influenced by the presence and feeding effects of multiple individuals, potentially overestimating antibiosis when a single individual is monitored. We compared life history traits of a single sorghum aphid, Melanaphis sorghi (Theobald, 1904) (Hemiptera: Aphididae) with life history parameters of groups of 10 females on susceptible sorghum (Sorghum bicolor (L.) Moench). There were no significant differences between single and grouped aphids for longevity (F = 3.67, P = 0.08), number of offspring produced (F = 0.31, P = 0.59), time spent reproducing (F = 3.74, P = 0.08), or the number of offspring per day (F = 0.93, P = 0.35). Demographic parameters [fecundity rate (Dm) and intrinsic rate of increase (rm)] were also not different. Overall, our results indicated that single aphids are suitable to investigate plant resistance, including antibiosis. When assessment requires using groups of aphids, it can be difficult to identify individuals. We investigated using non-toxic permanent markers (black, blue, green, and red) to put colored markings on the thorax of individuals. Survival and reproduction of marked individuals were similar to those of checks, and marks were readable for at least 2 weeks, demonstrating that permanent markers can be used when an experiment requires distinguishing among individuals or cohorts that are mixed.

Los áfidos tienen una gran capacidad intrínseca de crecimiento debido a que las hembras se pueden reproducir por partenogénesis. Los estudios que investigan la resistencia de plantas hospederas por lo general miden las características de la historia natural de un individuo en el cultivar evaluado. Sin embargo, la esperanza de vida, la fecundidad, y la capacidad intrínseca de crecimiento pueden estar influenciadas por la presencia y la alimentación de múltiples individuos, lo que potencialmente sobreestima la antibiosis cuando un solo individuo es monitoreado. Comparamos la historia de vida de un solo individuo del áfido del sorgo, Melanaphis sorghi (Theobald, 1904) con los parámetros de historia de vida de grupos de 10 hembras en sorgo susceptible. No hubo diferencias significativas en la longevidad del individuo o del grupo de áfidos (F = 3.67; P = 0.08), el número de crías producidas (F = 0.31; P = 0.59), el tiempo empleado en la reproducción (F = 3.74; P = 0.08), o el número de individuos por día (F = 0.93; P = 0.35). Los parámetros demográficos (tasa de fecundidad (Dm)) y la tasa intrínseca de crecimiento (rm) tampoco fueron diferentes. En términos generales, nuestros resultados indican que un solo áfido es adecuado para investigar la resistencia vegetal, incluyendo la antibiosis. Cuando las investigaciones requieren usar grupos de áfidos, puede ser difícil identificar individuos. Investigamos el uso de marcadores permanentes no tóxicos (negros, azules, verdes, y rojos) para colocar gotas de color sobre los individuos. La sobrevivencia y reproducción de los individuos marcados fue similar a los controles, y las marcas fueron identificables durante al menos dos semanas, demostrando que los marcadores permanentes pueden ser usados cuando un experimento así lo requiere, pudiendo seguir individuos o cohortes que están mezcladas.

Functional response of Pseudodoros clavatus Fabricius (Diptera: Syrphidae) preying on oleander aphid, Aphis nerii Boyer de Fonscolombe (Hemiptera: Aphididae), on leaves of Cynanchum racemosu var. unifarium was determined during a 24-hour period. Type of functional response was determined by logistic regression analysis that suggested larval stages I, II, and III of P. clavatus had a type II functional response. Handling time decreased with the state of development of the syphid. The attack rate was greater in larval stage I compared to larval stages II and III. Larval stage III had a greater attack rate than did larval stage II of P. clavatus. First, second, and third larval stages of P. clavatus ate an increasing number of A. nerri nymphs as abundance of prey increased.

Two formulations of permethrin EC termiticide were evaluated for depth of penetration into sandy-loam soil following by-the-label aqueous applications to the soil surface. The termiticide formulations were the same, except one formulation contained finely powdered cellulose and the other did not. Formulations were applied separately at 0.25% and 0.50% a.i. and allowed 7 to 9 days to disperse into the soil before samples were extracted and a.i. residues from various depths near the soil surface determined. Residue analyses for both formulations determined that 100% of a.i. recovered was contained in the top 5.1 cm of soil. Residues in the top 1.3 cm of soil were 95.2 to 96.9% of a.i. recovered. In the top 5.1 cm of soil, residue of permethrin plus powdered cellulose formulation applied at 0.50% was significantly greater than permethrin without cellulose additive.

Oligonychus perseae Tuttle, Baker & Abbatiello (Acari: Tetranychidae) is an economically important pest of avocado (Persea americana Mill.) in Mexico. Resistance reduced the efficacy of broad-spectrum miticides used to control this pest. Identification of reliable and more environmentally friendly alternatives is crucial for reduction of pesticide use in agriculture. This study determined the efficacy of three plant extracts derived from wild species, Petiveria alliacea L. (Phytolaccaceae), reseda luteola L. (Resedaceae), and Isocoma hartwegii (A. Gray) Greene (Asteraceae) for control of the mite. In vitro and field experiments were done. Ethanolic wild plant extracts from Petiveria alliacea and Isocoma hartwegii killed most mites by 24 hours after application in in-vitro assays. At field conditions, most effective extracts were from Petiveria alliacea and reseda luteola. Two commercial products derived from Azadirachta indica extract and combination of pepper + garlic extracts had good efficacy at in vitro and field conditions.

Fall armyworm, Spodopera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), a maize (Zea mays L.) pest native to the Americas, is a recent invasive insect of Africa, Asia, and Oceania. Resistant to several insecticide classes and toxins of Bt-maize, the insect damages maize by feeding on leaf, tassel, and ear tissues. Using native resistance in maize with existing tactics could improve control. The objective of the study was to evaluate resistance to leaf-feeding fall armyworm in maize population PI 674097 and founding landraces used to develop the germplasm. Plants grown in the field and artificially infested at the seven- or eight-leaf stage were visually scored for leaf-feeding damage at 7- and 14-days post infestation. All scores for NSL 283507, PI 498583, PI 583912, and PI 674097 were less (i.e., more resistant) than those of susceptible check GEMN-0131. In 2022, 14-day scores for PI 674097 were not different from those of resistant check Mp708 (3.6 ± 0.5 and 2.7 ± 0.5, respectively). PI 674097 was variable in response to lead feeding by fall armyworm, with individual plants having a range of 14-day scores from 2 (resistant) to 7 (susceptible) across both years of testing. The variability might be useful when selecting greater resistance to the pest.

Maize (Zea mays L.) is an economically important crop with worldwide production of 1,162 billion tons in 2020. Larvae of fall armyworm, Spodoptera frugiperda (J.E. Smith), attack all above-ground parts of maize plants from the seedling stage to maturity, while southwestern corn borer, Diatraea grandiosella Dyar, feed in plant whorls, on developing ears, and tunnel in stalks. The objective of this study was to evaluate germplasm lines developed by USDA-ARS but not released, for leaf-feeding damage by fall armyworm and southwestern corn borer and compare damage to maize lines previously released. The maize lines were planted in replicated experiments in the field. Plants were artificially infested at the whorl stage of growth, and leaf-feeding damage by fall armyworm or southwestern corn borer neonates was evaluated 14 days after infestation. Leaf-feeding damage scores differed significantly among the lines for both insect species in 2020 and 2021. From the 13 non-released “Mp” lines evaluated, damage scores for combined years ranged from 2.37 (Mp97:155) to 3.14 (Mp68:616) for fall armyworm and 3.42 (Mp97:155) to 4.64 (Mp97:161) for southwestern corn borer. Non-released “Mp” lines had better than moderate resistance to leaf damage by fall armyworm and moderate resistance to southwestern corn borer. The lines could be useful for producing breeding crosses with other resistant lines or with lines that have other desirable traits.

The Central American locust (CAL), Schistocerca piceifrons piceifrons (Walker) (Acrididae: Cyrtacanthacridinae), is a harmful agricultural pest from Mexico to Costa Rica. This study assessed the nutritional contents of the locust. Enzymatic digestibility of hydrosoluble proteins and the antioxidant capacities of the derived peptides were analyzed. Locust flour was used to make corn tortillas to analyze the water retention and physical properties of the tortillas. Protein content was 72.4%, and protein extract yielded 4.77 ± 0.095 mg per gram of dry weight. Trypsin provided the strongest protein digestion at 1 and 3 hours, compared to pepsin. Regarding peptide scavenging ability of free radicals, digestion with trypsin allowed detection of 0.068 and 0.055 mM TE/mg of protein, at digestive times of 1 and 3 hours, respectively. Overall, results were not statistically different. Corn tortillas displayed changes in color and consistency related to quantity of locust flour. When more locust flour was used, more water was lost during the cooking process. The research documents the potential of Central American locust as a protein source and brings the possibility of using this undervalued natural resource. Nutritional content of the CAL were compared to that of other edible insects.

La langosta Centroamericana (LCA), Schistocerca piceifrons piceifrons (Walker) (Acrididae: Cyrtacanthacridinae), es una plaga agrícola dañina desde México hasta Costa Rica. Este estudio evaluó el contenido nutricional de la langosta. Se analizó la digestibilidad enzimática de las proteínas hidrosolubles y las capacidades antioxidantes de los péptidos derivados. Se utilizó harina de langosta para elaborar tortillas de maíz para analizar la retención de agua y las propiedades físicas de las tortillas. El contenido de proteína fue de 72,4% y el extracto de proteína produjo 4,77 ± 0,095 mg por gramo de peso seco. La tripsina proporcionó la digestión de proteínas más fuerte a 1 y 3 horas, en comparación con la pepsina. En cuanto a la habilidad captadora de péptidos de los radicales libres, la digestión con tripsina permitió detectar 0,068 y 0,055 mM TE/mg de proteína, con tiempos digestivos de 1 y 3 horas, respectivamente. En general, estos resultados no mostraron diferencias estadísticas. Las tortillas de maíz presentaron cambios en color y consistencia en relación con la cantidad de harina de langosta. Cuando se utiliza más harina de langosta, se pierde más agua durante el proceso de cocción. Esta investigación documenta el potencial de la LCA como fuente de proteína y plantea la posibilidad de aprovechar este recurso natural subvaluado. El contenido nutricional de la LCA se comparó con el de otros insectos comestibles.

The effect of four treatments on ‘SUN-7705’ tomato (Solanum lycopersicum L.) was evaluated on morphology of B. cockerelli (Sulc). Eggs, nymphs, and adults were raised on tomato plants in a greenhouse conditions at the Colegio de Postgraduados, Campus Montecillo, Texcoco, Mexico. Adults were kept in individual boxes with wooden frames and organza covers at temperatures ranging from 10 to 40°C and photoperiod of 14:10 light:dark hours. Variables evaluated for egg morphometry were egg length (EL), egg width (EW), and pedicel length (PL). Variables measured for five nymphal instars were body length (BL), body width (BW), left antenna length (LAL), and right antenna length (RAL). Variables evaluated for adult morphometry were body length (BL), body width at the thorax (BWT), antennae length (ATN), wing length (WL), and wing width (WW). The effect of the different treatments on tomato significantly affected morphometric variables LP and AH of eggs. Significant and very significant differences were observed in morphometric variables LC, AC, LAI, and LAD of nymphs. Very significant differences were obtained in LC and ACT of B. cockerelli adult males. Results from morphometry of B. cockerelli have practical implications to help identify the five nymphal stages.

Se evaluó el efecto de cuatro tratamientos en la variedad de tomate ‘SUN-7705’ en la morfometría de B. cockerelli (Sulc). Se colectaron huevos, ninfas, y adultos criados en dicha variedad, en condiciones de invernadero en el Colegio de Postgraduados, Campus Montecillo, Texcoco, México. Los adultos fueron mantenidos en jaulas individuales de marco de madera cubiertos con tela de organza, bajo un periodo de 14:10 h de luz-oscuridad, con un rango de temperatura de 10 a 40°C. Las variables evaluadas fueron: longitud de huevo (LH), ancho de huevo (AH), y longitud de pedicelo (LP). Las variables medidas en los cinco ínstares ninfales fueron largo de cuerpo (LC), ancho de cuerpo (AC), longitud de antena izquierda (LAI), y longitud de antena derecha (LAD). En adultos, se consideraron las variables longitud de cuerpo (LC), ancho de cuerpo en tórax (ACT), largo de antenas (ATN), longitud de ala (LA), y ancho de ala (AA). Se encontró que el efecto de los diferentes tratamientos en la variedad de tomate afecto significativamente las variables morfométricas (LP) y (AH) en huevos; en las ninfas del primer instar, los tratamientos afectaron significativamente las variables (LC), (AC), (LAI), y (LAD). En ninfas de segundo instar se observaron diferencias significativas entre las variables (LC), (AC), (LAI), y (LAD). En ninfas de tercer instar se observaron diferencias significativas y altamente significativas para las variables (AC), (LAI), y (LAD). En ninfas de cuarto instar se encontró que los tratamientos tuvieron un efecto altamente significativo en las variables (LC), (LAI), y (LAD). En ninfas de quinto ínstar se observaron diferencias significativas y altamente significativas para las variables, (LC), (AC), (LAI), y (LAD). Para el caso de adultos, se obtuvieron diferencias altamente significativas en (LC) y (ACT) en machos de B. cockerelli. Los resultados obtenidos en la morfometría de B. cockerelli, tiene implicaciones prácticas porque dichas variables podrían ser usadas como guías para identificar las cinco fases ninfales posibles biotipos de la especie.

Chikungunya is a public health problem in Africa, Asia, and Latin America. Innate immune response (IIR) possesses enzymatic cleavage of nucleic acids of the agent as an important mechanism of viral counteraction. Oligoadenylate synthetase (OAS) enzymes are key regulators of RNase L to develop IIR against RNA viruses. OAS´ Single Nucleotide Polymorphisms (SNPs) have been related to susceptibility toward RNA-virus diseases. A cross-sectional study was done of 187 patients. OAS1 SNPs (rs1131454), OAS2 SNPs (rs1293762, rs15895, and rs1732778) and OAS3 SNPs (rs2285932 and rs2072136) genes were studied by qPCR in check and symptomatic patients to associate SNPs with susceptibility to disease. Relative risk (RR), Chi², and Hardy-Weinberg equilibrium indicated p < 0.05 statistical significance. SNPs rs1131454 and rs1293762 showed statistically significant differences between cases and check. Homozygous genotypes GG of rs1131454 and CC of rs1293762 were considered risk factors (RR 1.59; 95% CI 1.19-2.14 and RR 1.91; 95% CI 1.31-2.78, respectively). Heterozygous genotypes GA of rs1131454 and AC of rs1293762 were protective factors (RR 0.67; 95% CI 0.48-0.94 and RR 0.56; 95% CI 0.37-0.83, respectively). Moreover, rs1293762 was statistically significant in allelic frequencies between cases and checks, with A allele a protective factor (RR = 0.55; 95% CI 0.39-.078) and C allele a susceptibility factor (RR = 1.80; 95% CI difference (p < 0.05) in the allelic frequencies between cases and checks, with A allele as protection factor (RR = 1.28-2.54). Our results add to previously reported evidence of susceptibility of certain populations with specific OAS-family SNPs against CHIKV.

Alpha and beta diversity of Anastrepha spp. fruit flies in orchards of creole ‘Barranqueño’ mango (Mangifera indica L.) at Amatitán, Tequila, and San Cristóbal de la Barranca municipalities (Jalisco, Mexico) were analyzed. Eighty-two Multilure traps were set up to catch specimens from May to October 2021. The traps were at Amatitán (12), Tequila (12), and San Cristóbal de la Barranca (18) where altitude and temperature variables also were recorded. Alpha diversity (Hill numbers) and beta diversity (βSOR) were analyzed for each component. In total, 21,708 specimens of four species were captured: A. ludens (93.09%), A. serpentina (5.79%), A. obliqua (1.02%), and A. striata (0.09%). Richness of flies between Barranqueño mango orchards might be the same or similar, but diversity and equity of the assemblage differed in each orchard. There was less spatial rotation of Anastrepha species in the orchards. Diversity of flies in Barranqueño mango orchards was related to agroclimatic factors, crop phenology, altitude of the study area, and other pest hosts.

This study contributes to knowledge of the biodiversity of curculionids associated with Larrea tridentata (Sessé & Moc. Ex DC) at Miquihuana, Tamaulipas. The plant is almost intrinsic to the landscape of xerophilous shrubland of northern Mexico. Using a beat-sheet, a total of 89 adults was collected; seven species in the Entiminae subfamily were identified. Ophryastes sordidus LeConte, O. huachucae (Van Dyke), Pantomorus albosignatus (Boheman), Sapotes setosus Jones and O´Brien, S. puncticollis Casey, and Isodacrys fasciatum Cortés-Hernández were first recorded at Tamaulipas. The most abundant species (84%) was P. albosignatus (Boheman) that is endemic to and widely distributed in Mexico.

Jojoba [Simmondsia chinensis (Link) Schneider, Caryophyllales: Simmondsiaceae] is reported as a new host plant for Cyclocephala longula LeConte, 1863 (Coleoptera: Scarabaeidae) larvae from Baja California, Mexico.

Se reporta a la Jojoba (Simmondsia chinensis) (Caryophyllales: Simmondsiaceae) como nueva planta hospedera para larvas de Cyclocephala longula LeConte, 1863, (Coleoptera, Scarabaeidae) en Baja California, México.

Distribution of Aedes albopictus (Skuse) in Mexico increased during the last decade, most frequently in rural, semi-urban, and urban areas. Because the species is naturally infected with dengue virus, national vector surveillance programs adopted a vector-monitoring scheme in areas with where transmission was active and nearby. We reported the invasive species at Nayarit, a state close to other states where the species was present. Evidence confirmed the distribution of Ae. albopictus was expanding rapidly throughout Mexico.

La distribución de Ae. Albopictus (Skuse) en México ha aumentado durante la última década, reportándose con mayor frecuencia en zonas rurales, semiurbanas, y urbanas. Debido a que se ha encontrado que infeccion natural con virus dengue, el Programa Nacional de Vectores ha adoptado un esquema de monitoreo de en áreas con transmisión activa, así como en áreas cercanas. Aquí reportamos la presencia de esta especie invasora en Nayarit, un estado cercano a otros estados con presencia reportada de la especie. Esta evidencia confirma que la distribución de Ae. albopictus se está expandiendo rápidamente por todo México.

El objetivo del estudio fue evaluar el uso de imágenes captadas con dron para estimar los daños y pérdidas en el rendimiento del sorgo (Sorghum bicolor (L.) Moench) por el pulgón amarillo del sorgo, Melanaphis sorghi (Hemiptera: Aphididae), en el norte de Tamaulipas, México durante 2017. Durante la etapa de floración, se tomaron imágenes a 40 m de altura, con un dron DJI Phantom 3. Las imágenes se procesaron mediante el método de clasificación de máxima verosimilitud en ArcMap^™ 10.8 y se identificaron cinco categorías: follaje verde, espigas, follaje muerto, suelo desnudo y sombras. Los resultados indicaron que las imágenes aéreas captadas con dron representan una herramienta precisa (>95%) y rápida para determinar los daños y pérdidas en rendimiento del sorgo por M. sorghi.

The objective of this study was to evaluate images by a drone to estimate damage and yield losses in sorghum (Sorghum bicolor (L.) Moench) by Melanaphis sorghi (Hemiptera: Aphididae) in northern Tamaulipas, México, during 2017. During sorghum flowering, images were taken 40 m high by a DJI Phantom 3 drone. Images were processed by the maximum similarity method in ArcMap^™ 10.8. Results indicated that drone images represent a precise (>95%) and rapid tool to determine damage and yield losses by M. sorghi in sorghum.

Scirtothrips dorsalis Hood, 1919 y seis especies del género Frankliniella se obtuvieron de blueberries bajo manejo orgánico en Sayula, Jalisco, México, en brotes, tallos, hojas, flores, y frutos. También se detectó al trips depredador Frankliniotrips vespiformis y ácaros depredadores de la familia Phytoseiidae. También se obtuvieron trips de plantas arvenses en los túneles del cultivo.

Scirtothrips dorsalis Hood, 1919, and six species of the genus Frankliniella were collected from organic blueberries in Sayula, Jalisco, Mexico, from infested shoots, stems, leaves, flowers, and fruits. The predatory thrips Frankliniotrips vespiformis, and predatory mites were also detected. Thrips were also detected on weeds in the tunnels of blueberry field.

Diversas especies de curculiónidos espermatófagos incluidos en los géneros Curculio L. y Conotrachelus Dejean (Coleoptera: Curculionidae) son responsables del fenómeno denominado depredación-predispersión que afecta a las bellotas de encinos (Quercus L.: Fagaceae). Se reporta a Cholomyia inaequipes como endoparasitoide koinobionte solitario asociado con las larvas de Curculio sp., y Conotrachelus carinifer en el Estado de México. Este hallazgo contribuye al conocimiento de una nueva interacción trófica huésped-parasitoide, así como del incremento del área de distribución de Ch. inaequipes hacia el centro de México.

Spermatophagous insects such as Curculio L., and Conotrachelus Dejean (Coleoptera: Curculionidae) are responsible for the phenomenon known as predation-predispersal that affects oak (Quercus L.: Fagaceae) acorns. We report Cholomyia inaequipes as a solitary koinobiont endoparasitoid associated with the larvae of Curculio sp., and Conotrachelus carinifer in the State of Mexico, Mexico. This finding contributes to knowledge of a new trophic host-parasitoid interaction, as well as updates the distribution area of Ch. inaequipes toward Central Mexico.

Los insectos descortezadores del género Dendroctonus ocasionan la muerte de miles de árboles en bosques de coníferas del sur de México. El manejo de la plaga se basa en el uso de semioquímicos, por lo que el conocimiento de la distribución altitudinal y la fluctuación poblacional es indispensable para optimizar los recursos destinados al combate. Se realizó monitoreo periódico de las poblaciones de Dendroctonus frontalis Zimmermann y Dendroctonus mexicanus Hopkins en San Miguel Cajonos, Villa Alta, Oaxaca; el estudio se desarrolló de marzo a julio de 2015, se colocaron 20 trampas tipo Lindgren de 12 embudos, las cuales fueron distribuidas en dos sitios: Coyote, con un rango de 2369-2453 msnm, y Zinya, con un rango de 2243-2310 msnm; cada sitio con diez trampas, éstas fueron cebadas con semioquímicos (feromona y kairomona), dicho compuesto se cambió cada 45 días. Los vasos colectores de cada trampa tenían cinco cm² de plástico impregnando con clorpirifos para matar a los insectos; la recolecta de los individuos se realizó semanalmente. Los resultados permitieron comparar la fluctuación de ambas poblaciones, así como su abundancia y preferencia a los rangos altitudinales. Ambas especies registraron mayor actividad de vuelo en marzo y abril, y se redujo significativamente para mayo. D. frontalis y D. mexicanus se encuentran presentes en ambos sitios de monitoreo con rangos de 2243-2453 msnm; sin embargo, ambas especies presentaron mayor actividad en el sitio Coyote con un rango de 2369-2453 msnm.

El desierto chihuahuense representa una de las zonas áridas de mayor extensión e importancia de América del Norte con una gran riqueza de especies y número de endemismos, a pesar de esto el estudio de diversos grupos como los insectos aun es muy escaso. En esta investigación se evaluó la diversidad de crisomélidos presentes en zonas de Chihuahua y Durango que conforman el desierto chihuahuense mexicano. Se recolectaron 765 ejemplares pertenecientes a 55 especies, 34 géneros, nueve tribus, y seis subfamilias. Los valores de diversidad alfa reflejaron una mayor diversidad de especies en el estado de Durango, siendo Galerucinae la subfamilia con mayor riqueza y abundancia (20 especies, 331 individuos). De igual manera el análisis NMDS mostró un ordenamiento diferencial es las comunidades de crisomélidos estudiadas con 16 especies exclusivas para Chihuahua y 23 para Durango. Este estudio representa uno de los primeros reportes de diversidad de crisomélidos realizado en el Desierto Chihuahuense Mexicano.

The Chihuahuan Desert is one of the largest and most important arid zones in North America with great richness of species and number of endemisms, Despite this, study of various groups such as insects is still very scarce. In this research, diversity of chrysomelids in areas of Chihuahua and Durango that make up the Mexican Chihuahuan Desert was evaluated. In total, 765 specimens were collected, belonging to 55 species, 34 genera, nine tribes, and six subfamilies. Alpha diversity values reflected greater diversity of species in the State of Durango, with Galerucinae being the subfamily with the greatest richness and abundance (20 species, 331 individuals). Similarly, NMDS analysis showed differential ordering in chrysomelid communities studied with 16 species exclusive to Chihuahua and 23 to Durango. This study is one of the first reports of diversity of chrysomelids in the Mexican Chihuahuan Desert.

Se reporta la presencia de insectos polinizadores y su asociación con plantas silvestres en la Reserva Estatal Sistema Tetzcotzinco. Se identificaron 14 especies de seis familias: Apidae, Crabronidae, Halictidae, Megachilidae, Tiphiidae, y Vespidae. Los polinizadores tuvieron presencias florales con siete especies de plantas pertenecientes a Asteraceae, Cactaceae, Lamiaceae, y Polemoniaceae. La abeja europea, Apis mellifera L., fue el polinizador con mayor presencia en la reserva, y la planta con la que tuvo mayor interacción fue Baccharis pteronioides (DC) (Asteraceae). Se incrementa el número de registro de polinizadores para B. pteronioides (DC), Gymnosperma glutinosum (Spreng.) (Asteraceae), Ipomoea stans Cav (Convulvulaceae), Leonotis nepetifolia (L.) R.Br. (Lamiaceae), y Simsia amplexicaulis Pers. (Asteraceae).

The presence of pollinator insects and their association with wild plants in the Tetzcotzingo System Reserve is reported. Fourteen species of the families Apidae, Crabronidae, Halictidae, Megachilidae, Tiphiidae, and Vespidae were identified. Pollinators were found in seven species of Asteraceae, Cactaceae, Lamiceae, and Polemoniaceae. The European honeybee, Apis mellifera L., was the pollinator most often present in the reserve. The greatest European honeybee-plant interaction was with Baccharis pteronioides (DC) (Asteraceae). The number of registered pollinators increased for B. pteronioides, Gymnosperma glutinosum (Spreng.) (Asteraceae), Ipomoea stans Cav (Convulvulaceae), Leonotis nepetifolia (L.) R.Br. (Lamiaceae), and Simsia amplexicaulis Pers. (Asteraceae).

Se describe una nueva especie de mosca blanca, Aleuroglandulus avilai Carapia-Ruiz n. sp. encontrada en La Muralla, Putla, Guerrero, México en el envés de las hojas de Justicia salicifolia Blume. Microfotografías de estructuras morfológicas de puparios y una clave para especies del género Aleuroglandulus de México es presentada. Se discute la separación taxonómica con especies cercanas.

A new species of whitefly, Aleuroglandulus avilai Carapia-Ruiz n. sp., found in La Muralla, Putla, Guerrero, México on the underside of Justicia salicifolia Blume leaves, was described. Microphotographs of morphological structures of puparia and a key to species of the genus Aleuroglandulus from Mexico were provided. Taxonomic differentiation with related species was discussed.

The guacimo (Guazuma ulmifolia Lam.) is a tree used for several purposes in agroforestry. However, phytophagous mites have great impact on guacimo, creating leaf galls. The objective of this study was to taxonomically identify mites found in galls of G. ulmifolia at the Tepalcingo community, Morelos, Mexico. Random samples of malformed leaves and galls were collected during field trips, and taxonomic keys were used to identify the mites. Subsequently, the galls were dissected, and identity of the samples was determined with the aid of a stereoscope. The phytophagous mites belonged to the Eriophyidae family and are an invasive pest of guacimo trees. Future studies should focus on finding effective biological control agents and using molecular techniques for more accurate identification.

To update a list of arthropod group-species, including triatomines, in the State of Sonora, northwestern Mexico, entomological surveys were done during the spring of 2022 in conserved areas of the state. Triatomines Triatoma rubida (Uhler) and T. sinaloensis Ryckman (Hemiptera: Reduviidae) were found living in nests of woodrats, Neotoma sp., and California roadrunners, Geococcyx californianus (Lesson). Because T. rubida is one of the main vectors of Chagas disease in North America, and T. sinaloensis has been found naturally infected with Trypanosoma cruzi Chagas, surveillance of the species should be essential for Chagas disease control programs in northwestern Mexico.

To update a list of arthropod group-species including cockroaches in conserved areas of the State of Sonora, northwestern Mexico, entomological surveys were done during spring 2022. The harlequin cockroach, Neostylopyga rhombifolia (Stoll 1813) (Blattodea: Blattidae), was found in intra-domiciliary conditions at Rosario municipality. This is the first record of the harlequin cockroach in Sonora State. Including this species, 14 species of cockroaches are currently known in Sonora, including Arenivaga genitalis Caudell 1918 and Compsodes schwarzi (Caudell 1903).

Con el fin de identificar hongos entomopatógenos en la mosca Stomoxys calcintrans se purificó el ADN de micelio recuperado en ejemplares micosados. Se hizo una ampliación y secuenciación de la región del ADN ribosómico. Se aislaron cuatro especies de hongos parásitos: Aspergillus tubingensis, Fusarium subglutinans, Beauveria bassiana, y Penicillium glabrum.

To identify entomopathogenic fungi present in the stable fly Stomoxys calcintrans, DNA of the mycelium recovered in mycosed specimens was purified. An amplification and sequencing of the ribosomal DNA region identified four species of parasitic fungi: Aspergillus tubingensis, Fusarium subglutinans, Beauveria bassiana, and Penicillium glabrum.

Se registra por primera vez a Pemphigus populitransversus infestando a las raíces de una siembra comercial de brócoli (Brassica oleracea var. italica en Palmar de Bravo, Puebla, México.

Pemphigus populitransversus was recorded for the first time infesting the roots of commercial broccoli (Brassica oleracea var. italica) at Palmar de Bravo, Puebla, Mexico.